who is thea medical clinic?
Our Team believes that taking care of your mind, body, and spirit is one of the most important things you can do for your long-term health and wellness. Our holistic approach focuses on you to create a customized and realistic health care plan aimed at achieving your health and wellness goals while we accompany you every step of the way. We look forward to providing you with exceptional care and guidance throughout your therapeutic journey.
Our Leadership Team
Together, our leadership team guides the clinical care and day-to-day operations that support every patient visit.
Dr. Zeshan Shaikh
Chief Medical Officer & Occupational Health Physician
Dr. Zeshan Shaikh is a family physician with more than 15 years of experience in Canada and Australia. He earned his medical degree with honours from the University of Tasmania. He is a Fellow of the Royal Australian College of General Practitioners and a Certificant of the College of Family Physicians of Canada. Dr. Shaikh has broad experience in family medicine, chronic disease management and occupational health. This includes return-to-work planning, fitness-for- work assessments and workplace injury care. He has also served as Chief Medical Officer for two major insurers in Australia and as a medical director in Canadian life and disability insurance. That work gives him particular insight into complex disability claims and medical- legal assessments. He combines practical, thorough family care with a strong understanding of how health, work and insurance intersect, helping patients navigate their care with confidence.
Lucy A. Bastas
Chief Operations Officer
Lucy Bastas brings more than 20 years of leadership experience in health, wellness and safety to Thea Medical Clinic. Lucy holds an Honours B.A. from the University of Toronto and a Degree in Occupational Health and Safety from McMaster University. Before joining Thea, Lucy held senior health and safety and operations roles across healthcare, insurance, transportation, manufacturing, retail, and film and television. She served as National Health and Safety Manager for Toys “R” Us Canada and as Chief Compliance Officer leading production safety and
COVID-19 testing programs for major film and television productions, including the Amazon Prime series The Lake with Julia Stiles and Everything is Going to Be Great with Bryan Cranston and Allison Janey. Throughout her career, she has specialized in program development, regulatory compliance and helping people return to work safely after injury or illness. As Chief Operating Officer, she oversees the clinic’s day-to-day operations, leads its administrative team and builds partnerships that expand access to care, including the clinic’s programs for Canadian veterans and their families. Lucy speaks English, Greek and French.
Meet Our Psychiatrists
Dr. Jakov Raguz
Adult Psychiatry
Dr. Jake (Jakov) Raguz is a Royal College–certified psychiatrist. A Toronto-raised physician he trained in psychiatry in Croatia and the United Kingdom. He graduated with distinction from the University of Toronto before earning his medical degree at the University of Zagreb School of Medicine, where he also pursued doctoral studies in neuroscience at the Croatian Institute for Brain Research. Dr. Raguz completed his core psychiatry training with the South London and Maudsley NHS Trust, one of the UK’s leading mental health providers, in affiliation with King’s College London. His training spanned general adult, child and adolescent, older adult, forensic
and neuropsychiatry, in both inpatient and community settings. He has additional training in cognitive behavioural therapy (CBT), psychodynamic therapy and repetitive transcranial magnetic stimulation (rTMS) for depression. Outside of the clinic, Dr. Raguz is the founder of Orphani, a charity supporting the health and education of orphaned children in Croatia and Bosnia. He speaks English and Croatian.
Dr. Dina Lagzdins
Adult Psychiatry
Dr. Dina Lagzdins brings more than ten (10) years of Canadian clinical experience in psychiatry,
with a special focus on addictions and serious mental illness. She completed her psychiatry residency at Western University’s Schulich School of Medicine & Dentistry in London, Ontario. Before that, she completed two clinical fellowships at the University of Toronto and the Centre for Addiction and Mental Health (CAMH), one in Addiction Psychiatry and one in Schizophrenia. She was nominated as one of the University of Toronto’s four most accomplished clinical fellows. Dr. Lagzdins has cared for patients with alcohol, opioid, cannabis and benzodiazepine use disorders, concurrent disorders, psychosis, and mood and anxiety disorders.
She has also provided telepsychiatry to undeserved communities across Ontario. With more than 800 hours of psychotherapy training, she combines medication management with therapy for well-rounded care. An active researcher, she has contributed to numerous published studies in addiction medicine. Originally trained as a neurologist, she enjoys yoga, meditation, swimming, cross-country skiing and the arts.
Dr. Mazdak Samani
Adult & Geriatric Psychiatrist
Dr. Mazdak Samani is a consultant psychiatrist with more than 20 years of medical experience across Australia and Iran. He is a Fellow of the Royal Australian and New Zealand College of Psychiatrists and holds a Master of Health Administration from Curtin University. His psychiatric training spanned acute inpatient care, child and adolescent mental health, older adult psychiatry, consultation-liaison psychiatry and transcultural mental health. He has led multidisciplinary community mental health teams in Western Australia, including serving as Head of Clinical Service. He also founded Solis Health, a private mental health clinic, where he became the first psychiatrist in Western Australia to offer ketamine and esketamine therapy for treatment-resistant depression. Dr. Samani has a particular interest in ADHD, autism spectrum disorder, depression and neuropsychiatry. He takes a holistic approach that looks at each patient’s biological, psychological and social needs. Having worked with patients from many cultural backgrounds, he values clear communication and individualized care. He speaks English and Persian. Outside of the clinic, he enjoys soccer, tennis and swimming.
Dr. Peter Wu
Adult Psychiatry
Dr. Peter Wu is a Royal College–certified psychiatrist who specializes in the mental health of children and adolescents. Originally from Canada, he earned a Bachelor of Medical Sciences with honours from Western University before completing his medical degree at Trinity College Dublin. He then trained in psychiatry across Ireland, England and Scotland, and completed specialist training in Child and Adolescent Psychiatry with NHS Scotland in 2024. Dr. Wu has cared for young people and adults in inpatient units, community teams, hospital liaison services and virtual care. His experience covers mood, anxiety and eating disorders, neurodevelopmental conditions such as ADHD and autism, intellectual disabilities and addictions. He works closely with families and multidisciplinary teams to provide holistic, evidence-based care.
Dr. Ahmed Mansour
Adult & Geriatric Psychiatrist
Dr. Ahmed Mansour is a Royal College–certified psychiatrist with more than 25 years of experience in Canada and internationally. He earned his medical degree, Master’s in Neuropsychiatry and Doctorate in Psychiatry at Ain Shams University in Cairo, Egypt, one of the largest medical schools in Africa and the Middle East. Dr. Mansour spent more than 15 years as a consultant psychiatrist at major hospitals in Kuwait and Saudi Arabia. There he served as Deputy Head of Department and led addiction services for adults and adolescents. In Canada, he practised at the Woodstock Addiction and Mental Health Centre in New Brunswick, caring for adolescents and adults with a wide range of psychiatric and addiction conditions. He has also worked at an Operational Stress Injury (OSI) clinic supporting veterans and military members, and taught Dalhousie University medical students. He is a highly experienced, knowledgeable, and deeply compassionate clinician with a longstanding commitment to quality care.
Dr. Chris Doyle
Adult Psychiatrist
Dr. Chris Doyle is a Royal College–certified psychiatrist with more than 25 years of experience in mental health and addiction care. He earned his medical degree at McGill University and completed his psychiatry residency at the University of Toronto, with specialized training in addiction psychiatry and personality disorders. He also holds a Certificate in Addiction Medicine from the BC Centre on Substance Use. Dr. Doyle spent eight years as a staff psychiatrist at the Centre for Addiction and Mental Health (CAMH), where he also lectured in concurrent disorders for the University of Toronto. He later served as Director of Emergency Psychiatric Services at Credit Valley Hospital and as a consulting psychiatrist at Cambridge Memorial Hospital. He currently serves as Clinical Director at The Centres for Health and Healing in Vaughan. A trauma-informed clinician, Dr. Doyle specializes in addiction and concurrent disorders, complex psychiatric conditions and crisis intervention. He provides thoughtful, evidence-based care built on clear communication and respect. Outside of the clinic, Dr. Doyle is an avid cyclist.
Dr. Louis Obikaonu
Adult Psychiatrist
Dr. Louis Obikaonu completed his psychiatry residency through the College of Psychiatrists of Ireland in Dublin, training in child and adolescent, older adult, addiction, intellectual disability, rehabilitation and consultation-liaison psychiatry. He continued his work in Dublin, Ireland for over fifteen (15) years before moving to Canada. Dr. Obikaonu is a Royal College–certified psychiatrist and has been working in the Canadian healthcare sector for the past ten (10) years as a general adult psychiatrist. He is a highly experienced, respectful and benevolent clinician. He is dedicated and committed to providing exceptional patient care and achieving optimal outcomes for all patients. Outside the clinic, Dr. Obikaonu enjoys jogging, listening to music and travelling.
Dr. Shokri Al-Masri
Adult Psychiatrist
Dr. Mohamed Shokri Al-Masri is a Royal College–certified psychiatrist with more than 20 years of medical experience in Canada and internationally. He earned his medical degree in Syria in 2002 and is a Licentiate of the Medical Council of Canada. Dr. Al-Masri provides assessment and treatment for adults with a wide range of mental health conditions. These include depression, including treatment-resistant depression; bipolar disorder; severe anxiety and panic disorder; complex PTSD; and schizophrenia. He also supports patients whose mental health concerns overlap with addiction or chronic pain. Dr. Al-Masri offers a safe, non-judgmental space where patients feel heard. He combines current medication treatment with a collaborative, whole-person approach to help each patient restore balance and quality of life. Dr. Al-Masri speaks English and Arabic.
Dr. Chijioke Ukwe
Adult Psychiatrist
Dr. Chijioke Ukwe is a Royal College–certified psychiatrist with more than 25 years of medical experience in Canada and internationally. He earned his medical degree at the University of Nigeria and has practised medicine in Nigeria, Manitoba and Ontario. Along with his work at Thea Medical Clinic, Dr. Ukwe practises at Scarborough Health Network’s Birchmount Hospital, where he provides hospital-based psychiatric care. He assesses and treats adults with a range of mental health conditions, including depression, anxiety, bipolar disorder and schizophrenia. Dr. Ukwe speaks English and Igbo.
Dr. Mohammad Khaleel
Adult & Geriatric Neuropsychiatrist
Dr. Khaleel was trained in the UK and specializes in Geriatric and Adult Neuropsychiatry. With over 16 years of experience, his clinical focus is neurodevelopmental disorders (ADHD, Adult Autism, Intellectual Disability, etc.), Cognitive and Neurogenerative Disorders (Dementia, Traumatic Brain Injury, Parkinson’s Disease, Epilepsy, etc.), Sexual Dysfunction, Movement Disorders and Mental Health issues related to genetic conditions. In addition to pharmacological management, he offers psychotherapy including clinical hypnosis. Dr. Khaleel is committed to providing compassionate, evidence-based patient care. Outside of medicine. Outside the clinic, Dr. Khaleel enjoys exercising and watching movies especially thrillers.
Dr. Salmon Wahid
Child & Adolescent Psychiatrist
Dr. Wahid completed his residency in Washington, DC (USA) and is currently licensed with the New York Board of Medicine and the College of Physicians and Surgeons of Ontario (CPSO). An empathetic, caring, and dedicated professional with a career in medicine spanning over 30 years with the last 14 years working with patients ages 5-22 with serious emotional dysregulation such as suicidality and major mental illnesses. He has an exceptional background in psychopharmacology and an interest in psychotherapies. His speciality and expertise are in developmental, autism, bipolar, depression, anxiety, eating, and schizophrenic disorders. He is passionate about his work and is dedicated to mentoring future health care practitioners. Currently he is an Assistant Professor (Adjunct) at McMaster University and takes pride in his work with those who will continue his passion for helping children and young adults experiencing and trying to cope with mental health.
Dr. Paternus Okafor
Child & Adolescent Psychiatrist
Dr. Paternus Okafor is a psychiatrist with more than 13 years of experience and a focus on the mental health of children and adolescents. He completed his psychiatric training in Ireland and the United Kingdom, along with Basic Paediatric Training through the Royal College of Physicians of Ireland and is a Fellow of the Royal College of Physicians of Canada. Dr. Okafor has worked in inpatient, outpatient and intensive care child and adolescent mental health services in the UK, Ireland and Canada. In Ontario, he served as a Consultant Child and Adolescent Psychiatrist at Health Sciences North in Sudbury and as an assistant professor at the Northern Ontario School of Medicine. He currently practises at Lakeridge Health in Oshawa. His experience spans ADHD, autism spectrum disorder, anxiety, depression, OCD, eating disorders and psychosis in young people. Dr. Okafor works closely with families and multidisciplinary teams to provide thorough, compassionate and evidence-based care.
Dr. Mohammad Attar Khan
Adolescent & Adult Psychiatrist
Dr. Khan has over 13 years of experience working as Consultant Psychiatrist in Canada. He completed his 5-year psychiatric residency and his child/adolescent psychiatric training at the University of Saskatchewan before completing a further 2 years fellowship in forensic psychiatry from the University of British Columbia. He is a Certified Specialist with the Royal College of Physicians and Surgeons of Canada in General Adult Psychiatry and a Subspecialist in Child/Adolescent and Forensic Psychiatry. Dr. Khan is also a Senior Consultant of Psychiatry with the Forensic Psychiatric Commission of BC, a Consultant of Child/Adolescent and Adult Psychiatry with the Surrey Memorial Hospital, and a Clinical Instructor at the University of British Columbia. Dr. Khan is fluent in English, Arabic, Pashto, Urdu, and Hindi.
MEET OUR GP-OHIP PSYCHOTHERAPISTS
Dr. Sandrine Cartier
GP-OHIP Psychotherapy
Dr. Sandrine Cardinal Cartier is a family physician with more than 10 years of experience and a special focus on occupational health. She earned her medical degree at the Université de Montréal and completed her Family Medicine Residency at the University of Toronto. She is a Certificant of the College of Family Physicians of Canada and an Associate Member of the Canadian Board of Occupational Medicine. Dr. Cardinal Cartier has extensive experience in fitness-for-work and safety-critical evaluations, workplace medical surveillance and preventive health assessments. She is also a designated Immigration Canada Panel Physician and is certified by Transport Canada for marine medical examinations. Her medical training took her to rural clinics in Mali and Chile, where she developed a deep appreciation for community-based and culturally sensitive care. Dr. Cardinal Cartier speaks English, French and Spanish.
Dr. Jabiz Moderasi Esfeh
GP-OHIP Psychotherapy
Dr. Modaresi is a family physician with over 20 years of experience. After moving to Canada, she completed her family medicine residency at Queen’s University in Kingston, Ontario. She later pursued a fellowship in Cognitive Behavioural Therapy (CBT). For the past few years, her practice has mainly focused on helping patients with a variety of mental health issues such as anxiety, depression, OCD, postpartum depression and insomnia.
Dr. Ismat Tahira
GP-OHIP Psychotherapy
Dr. Ismat Tahira completed her residency at Western University and is currently working within the hospital system. She has an impressive career in healthcare that spans over twenty (20) years. She recognizes that mental health is one of key factors in achieving optimal health and wellness. She nurtures a safe space for discussion and encourages patients to explore various coping mechanisms as part of her therapeutic approach in empowering her patients to confront the daily challenges they encounter in their daily lives.
Dr. Celestine Nwafor
GP-OHIP Psychotherapy
Dr. Celestine Nwafor is a family physician who provides comprehensive, continuous primary care for individuals and families of all ages. Originally from Nigeria, he practised medicine in the United Kingdom before bringing his clinical experience to Ontario. Along with his work at Thea Medical Clinic, Dr. Nwafor practises at North York Medical Health Centre. He has a particular interest in psychotherapy and in building long-term relationships with his patients. He tailors each treatment plan to the patient’s needs, values and circumstances.
MEET OUR INTERNAL MEDICINE SPECIALISTS
Dr. Dalal Mazraeh
Internal Medicine
Dr. Dalal Mazraeh graduated with a Medical Degree from Saint James School of Medicine in Anguilla. She has completed extensive post-graduate medical training, including residency in Internal Medicine, and holds key certifications in her specialty areas. Her training equips her with the expertise necessary to manage complex medical conditions in adult and geriatric populations. Her clinical philosophy is grounded in an evidence-based and informative approach, emphasizing personalized patient care. She is committed to serving the community and fostering a collaborative doctor-patient relationship to optimize health outcomes.
Dr. Yosi Adeoshun
Internal Medicine & Endocrinology
Dr. Yosi Adeoshun is an internal medicine physician with a focus on endocrinology, diabetes and metabolism, and more than 20 years of medical experience. She earned her medical degree at Ladoke Akintola University of Technology in Nigeria and completed her internal medicine residency at Meharry Medical College in Nashville, Tennessee. Dr. Adeoshun cares for adults with a wide range of hormonal and metabolic conditions. These include type 1 and type 2 diabetes, thyroid disease, pituitary and adrenal disorders, osteoporosis, calcium disorders and obesity. She is known for a patient-centred, compassionate approach and takes time to listen and explain each patient’s condition clearly.
Dr. Sana Nouman
Internal Medicine & Nephrology
Completed medical school at King Edward Medical University, followed by an Internal Medicine residency at University of Pittsburgh Medical Center in the United States. Clinical interests lie within the broad scope of Internal Medicine, including preventative care, chronic disease management, and complex multi-system conditions. Committed to providing thorough, evidence-based, and patient-centered care, with an emphasis on continuity and long-term health planning. She values building collaborative relationships with patients and their families to support informed decision-making and holistic well-being. Outside of the clinic, Dr. Nouman enjoys photography, travelling, and spending time with her family.
Dr. Ghobad Abangah
Internal Medicine & Gastroenterology
Dr. Ghobad Abangah brings more than 25 years of medical experience to Thea Medical Clinic. He trained in internal medicine at Shahid Beheshti University of Medical Sciences in Tehran and completed subspecialty training in gastroenterology and hepatology at Mashhad University of Medical Sciences. For over 15 years, Dr. Abangah served as a professor of medicine at Ilam University of Medical Sciences. There he cared for patients with a wide range of digestive and liver conditions, taught medical students and residents, and was named the university’s Best Doctor of the Year. An active researcher, he has published more than 20 peer-reviewed articles on topics including diabetes, hepatitis and digestive health. Dr. Abangah has a strong commitment to preventive care and patient education. He is known for his warm bedside manner and for building trust with patients from diverse backgrounds. He speaks English and Farsi. Outside the clinic, Dr. Abangah enjoys soccer, staying active at the gym, and travelling to discover new cultures.
Dr. Harris Joseph
Internal Medicine
Dr. Harris Joseph graduated from St. George’s University School of Medicine in 2021 and completed his internal medicine residency at the University of Pittsburgh Medical Center in 2024. He was a recipient of the High Performer List recognition in 2022 and the Ambulatory Medicine Award in 2024. Dr. Joseph completed his fellowship in Nephrology at the University of Rochester, NY.
Dr. Humaira Rizvi
Internal Medicine
Dr. Rivzi started her career as an Internal Medicine Specialist in Canada at the Markham Stouffville Hospital in Markham, Ontario. She is licensed to practice in both Canada and the United States where she has been practising since 2014. Dr. Rizvi is an attentive and committed health care provider. Outside the clinic, Dr. Rizvi enjoys reading novels, travelling and watching sports (hockey/soccer).
Dr. Ali Nauroz
Internal Medicine
Dr. Nauroz Ibrahim Ali is an internal medicine physician certified by the American Board of Internal Medicine, with more than 17 years of experience in primary care, hospital medicine and emergency medicine. Born and raised in Toronto, he earned his medical degree at Saba University School of Medicine and completed his internal medicine residency at Penn State Milton S. Hershey Medical Center in Pennsylvania. Dr. Ali practiced in Las Vegas, Nevada, where he worked as a hospitalist and provided virtual primary and preventive care. He has a particular interest in metabolic health and weight management. He takes a personalized, evidence-based approach and sees each visit as a partnership with his patients. Dr. Ali speaks English and Bengali. Outside the clinic, he is a marathon runner and lifelong athlete.
Dr. Sana Nouman
Internal Medicine & Nephrology
Completed medical school at King Edward Medical University, followed by an Internal Medicine residency at University of Pittsburgh Medical Center in the United States. Clinical interests lie within the broad scope of Internal Medicine, including preventative care, chronic disease management, and complex multi-system conditions. Committed to providing thorough, evidence-based, and patient-centered care, with an emphasis on continuity and long-term health planning. She values building collaborative relationships with patients and their families to support informed decision-making and holistic well-being. Outside of the clinic, Dr. Nouman enjoys photography, traveling, and spending time with her family.
MEET OUR OTHER SPECIALIST
Dr. Yehuda Habaz
Obstetrician & Gynecologist
Dr. Yehuda Habaz is a Royal College–certified obstetrician and gynecologist with more than 25 years of specialty experience in Canada and Israel. He earned his medical degree from Tel Aviv University and completed his residency in Obstetrics and Gynecology in Jerusalem, including training in reproductive endocrinology and infertility. He later completed a fellowship in Advanced Obstetrics at Sunnybrook Health Sciences Centre in Toronto. Dr. Habaz served as Deputy Director of the Delivery Room at Rabin Medical Center, a tertiary care hospital in Israel. In Canada, he was Chief of Obstetrics and Gynecology at Campbellton Regional Hospital in New Brunswick, then provided full-scope obstetric and gynecologic care at Ross Memorial Hospital in Lindsay, Ontario. He has additional training in gynecologic ultrasound, colposcopy and gynecologic endoscopy. Since 2014, Dr. Habaz has run outpatient gynecology clinics in Toronto and Thornhill, offering experienced, attentive care to women at every stage of life.
Family Medicine
Dr. Mandy Liedeman
Family Physician
Dr. Mandy Liedeman is a family physician with more than 30 years of experience caring for patients across York Region. She earned her medical degree from the University of Toronto, where she received the Walter F. Watkins Scholarship, and completed her rotating internship at St. Joseph’s Health Centre. Dr. Liedeman spent over two decades in group family practice in Richmond Hill and Newmarket, caring for patients of all ages, from newborns to seniors. She has also served as Medical Director and Attending Physician in long-term care, providing complex geriatric care, palliative care and end-of-life support. She currently practises in acute care at a community clinic in Thornhill. Dr. Liedeman also provides virtual care for chronic and complex conditions. She has a special interest in supporting Canadian veterans, including consultation for medical cannabis. She believes in personalized, team-based care that treats each patient as a whole person.
Dr. Eloho Veronica Odu
Family Physician
Dr. Veronica Odu is a family physician with more than 15 years of experience caring for patients in Canada and the United Kingdom. She earned her medical degree from University College Hospital in Ibadan, Nigeria. She is a Member of the Royal College of General Practitioners (UK) and a Certificant of the College of Family Physicians of Canada. Dr. Odu also holds diplomas in geriatric medicine, obstetrics and gynaecology, and sexual and reproductive health. This gives her broad expertise in caring for patients at every stage of life. After practising as a GP in the UK, she provided family medicine in Alberta before joining practices in the Greater Toronto Area. She has a special interest in mental health and the management of chronic illnesses. She supports her patients with compassionate, practical care and counselling.