Dr. Mark Jeremy Sinyor – Psychiatrist | Toronto, ON

Dr. Mark Jeremy Sinyor is a dedicated Psychiatrist specializing in the diagnosis, treatment, and prevention of a wide range of mental, emotional, and behavioral disorders in adults, and may see older adolescents for certain conditions. Practicing at London Health Sciences Centre in Toronto, ON, he is a key member of the local mental healthcare community. His practice adheres to the high standards set by the College of Physicians and Surgeons of Ontario (CPSO). Dr. Sinyor provides comprehensive psychiatric care, including diagnostic assessment, medication management, and psychotherapeutic interventions for a variety of conditions such as mood disorders, anxiety disorders, and psychotic disorders. His approach is rooted in a deep understanding of mental health complexities, ensuring patients receive personalized and effective treatment. The practice is committed to providing confidential and respectful mental health care, fostering a safe space for patients to explore their concerns and work towards recovery and well-being.

He graduated with a Medical Degree from the University of Toronto, Canada, and has over 12 years of experience as a Psychiatrist since 2012. Dr. Sinyor is recognized as a RCPSC Specialist by the College of Physicians and Surgeons of Ontario (CPSO), reflecting his expertise and commitment to excellence in psychiatric care. His extensive training and experience enable him to address a broad spectrum of mental health needs with a focus on evidence-based practices and compassionate patient engagement.

Dr. Sinyor’s clinical philosophy emphasizes collaborative care, patient empowerment through education and understanding, and fostering a therapeutic alliance built on trust and respect. He is dedicated to providing thorough, compassionate, and effective mental health services to the Toronto community. All consultations are conducted in English, and he strives to create a welcoming environment where patients feel valued and supported on their journey toward mental wellness.

Dr. Mark Sinyor provides assessment and treatment for a wide spectrum of mental health conditions, including:

Substance-Related & Addictive Disorders (Dual Diagnosis)

• Stimulant Use Disorder (e.g., Cocaine, Amphetamines): Problematic pattern of stimulant use leading to impairment or distress.
• Cannabis Use Disorder: Continued use of cannabis despite clinically significant impairment or distress.
• Opioid Use Disorder: A problematic pattern of opioid use leading to clinically significant impairment or distress.

Personality Disorders

• Narcissistic Personality Disorder (NPD): A pattern of grandiosity, need for admiration, and lack of empathy.
• Avoidant Personality Disorder: Characterized by social inhibition, feelings of inadequacy, and hypersensitivity to negative evaluation.

Anxiety, OCD & Trauma-Related Disorders

• Obsessive-Compulsive Disorder (OCD): Characterized by unwanted, intrusive thoughts or images (obsessions) and repetitive, ritualistic behaviors (compulsions) performed to reduce anxiety.
• Social Anxiety Disorder (Social Phobia): Intense fear or anxiety of social situations where one might be scrutinized by others, leading to avoidance.
• Generalized Anxiety Disorder (GAD): Excessive, persistent worry and anxiety about various everyday life events or activities, often difficult to control.

This list is not exhaustive. Effective mental health care is highly personalized. Please consult with Dr. Mark Sinyor for an accurate diagnosis and tailored treatment plan.

• Couples & Family Therapy (psychiatric context): Providing therapy to couples or families to address relationship dynamics, communication problems, and the impact of mental illness on the family system.
• Neuropsychiatric Evaluation & Cognitive Assessment (Initial Screening/Referral): Initial assessment of cognitive function and neuropsychiatric symptoms, with referral for detailed neuropsychological testing if indicated, to differentiate psychiatric from neurological conditions.
• Individual Psychotherapy (various modalities): Offering one-on-one talk therapy tailored to individual needs, potentially incorporating elements from different therapeutic approaches (e.g., psychodynamic, CBT, supportive).
• Second Opinion Consultations for Complex Psychiatric Cases: Providing expert second opinions on challenging diagnoses, treatment-resistant conditions, or complex psychopharmacological management plans.
• Crisis Intervention & Urgent Psychiatric Assessment (in appropriate settings): Providing rapid assessment and intervention for individuals experiencing acute psychiatric crises, such as suicidal ideation, acute psychosis, or severe agitation, typically in emergency departments or crisis clinics.
• Psychodynamic Psychotherapy / Psychoanalytic Psychotherapy: Exploratory therapy focused on understanding how past experiences and unconscious patterns influence current feelings, thoughts, and behaviors.

Note: This list provides a general overview. Treatment approaches are highly individualized. Please discuss with Dr. Sinyor for care relevant to your specific mental health needs.

All psychiatric services are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO) and relevant psychiatric care guidelines. Contact the clinic or your referring physician regarding new patient intake and referral processes.

London Health Sciences Centre, located in Toronto's Lawrence Park neighborhood, serves as the primary setting for Dr. Sinyor's psychiatric practice. The facility is situated near Exhibition Place and Ontario Place, easily accessible via TTC (Subway, Streetcar, Bus) services. The location offers a discreet and welcoming atmosphere, designed to ensure comfort and privacy for all patients. The practice is housed within a larger healthcare facility, providing integrated support and resources. The building is wheelchair accessible and aims to provide a comfortable and private environment for all patients. Metered street parking and nearby public lots are available, making it convenient for patients to attend appointments. The clinic's setting emphasizes confidentiality, accessibility, and a supportive environment to facilitate effective mental health care.

Are psychiatric consultations and treatments with Sinyor, a Psychiatrist, covered by Ontario Health Insurance Plan (OHIP) in ON?

Medically necessary consultations, diagnostic assessments, and medication management provided by a licensed Psychiatrist like Sinyor are generally covered by Ontario Health Insurance Plan (OHIP) in ON when a referral from a family doctor is in place. Coverage for psychotherapy services provided by a psychiatrist can vary; some provinces cover it, while others may have limitations or it may be part of hospital-based programs. Specific medications may also require special authorization or be subject to formulary restrictions. It's crucial to discuss coverage specifics for therapy or any specialized treatments with Sinyor's office or Ontario Health Insurance Plan (OHIP).

Do I need a referral to see Sinyor, a Psychiatrist?

Yes, a referral from your family physician or another medical doctor (e.g., a pediatrician for child psychiatry, or an ER physician for urgent assessment) is almost always required to see a Psychiatrist such as Sinyor for services covered by the provincial health plan. Mental health conditions often benefit from initial assessment by a primary care provider who can determine the need for specialist psychiatric care. The referral ensures coordinated care, appropriate triaging, and transfer of relevant medical history.

What if I experience side effects from medication prescribed by Sinyor?

It's common for psychotropic medications to have potential side effects, especially when starting a new medication or adjusting a dose. Sinyor will discuss common side effects to watch for. If you experience side effects, it's very important to communicate this to Sinyor or his office promptly. Do not stop taking your medication suddenly unless instructed to do so by Sinyor, as this can sometimes cause withdrawal symptoms or a worsening of your condition. Sinyor can help manage side effects by adjusting the dosage, switching to a different medication, or suggesting strategies to mitigate them.

How can I prepare for my first appointment with Sinyor?

For your first psychiatric appointment with Sinyor, it's helpful to gather some information beforehand. Try to make a list of your main concerns, symptoms (including when they started, how often they occur, and their intensity), and any significant life events or stressors. Bring a list of all current medications (psychiatric and non-psychiatric), including dosages, as well as any past psychiatric medications you've tried and your experience with them. Information about your family history of mental health conditions can also be very useful. Be prepared to discuss your personal history, social situation, and coping strategies. Writing down any questions you have for Sinyor can also ensure you get the most out of your consultation.

What is the main difference between a Psychiatrist like Sinyor and a Psychologist?

The main difference is that a Psychiatrist, like Sinyor, is a medical doctor (MD) who has completed medical school and then specialized residency training in psychiatry. Because they are physicians, psychiatrists can diagnose mental health conditions, prescribe and manage psychotropic medications, and provide various forms of psychotherapy. They can also order medical tests to rule out physical causes of psychiatric symptoms. A Psychologist typically has a doctoral degree (PhD or PsyD) in psychology and is trained in psychological assessment, diagnosis, and providing psychotherapy (talk therapy). Psychologists generally cannot prescribe medication in Canada, though they often work closely with psychiatrists or family doctors who do.

London Health Sciences Centre
2075 Bayview Avenue, Department of General Surgery
Toronto, ON M4N 3M5

Phone: (416) 480-4070 | Fax: (416) 480-4613

The facility is wheelchair accessible and aims to provide a comfortable and private environment for all patients.

Dr. Sinyor is a licensed Psychiatrist regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Regulated Health Professions Act, 1991 and Medicine Act, 1991 in ON. A referral from a family physician or another medical doctor is typically required for consultations with Dr. Sinyor for services covered by the provincial health plan.

Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Sinyor-Mark-Jeremy/0242666-86682