Dr. Denise Sequeira – Psychiatrist | Toronto, ON

Dr. Denise Sequeira 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 McMaster University Medical Centre in Toronto, ON, she is a key member of the local mental healthcare community. She 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. Her 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.

Dr. Sequeira obtained her Medical Degree from the University of Toronto, Canada. With over 33 years of experience as a Psychiatrist since 1991, she is recognized as a Royal College of Physicians and Surgeons of Canada (RCPSC) Specialist by the College of Physicians and Surgeons of Ontario (CPSO). Her extensive training and ongoing professional development ensure she remains current with the latest advances in mental health care and psychiatric treatment modalities.

Her clinical philosophy centers on collaborative care, emphasizing patient empowerment through education and understanding. Dr. Sequeira is committed to evidence-based treatment approaches and fostering a therapeutic alliance built on trust and respect. She provides care primarily in English to the Toronto community, dedicated to supporting her patients' journey towards mental wellness with compassion and professionalism.

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

Mood Disorders

• Premenstrual Dysphoric Disorder (PMDD): A severe form of premenstrual syndrome (PMS) with significant mood swings, irritability, depression, or anxiety in the week or two before menstruation.
• Seasonal Affective Disorder (SAD): A type of depression related to changes in seasons, most commonly beginning in the fall and continuing through the winter months.

Other Psychiatric Conditions & Focus Areas

• Sleep-Wake Disorders (Insomnia, Hypersomnolence, Parasomnias - when psychiatrically related): Persistent disturbances in sleep patterns or quality that are often comorbid with or exacerbated by psychiatric conditions.
• Somatic Symptom Disorder & Illness Anxiety Disorder: Characterized by significant focus on physical symptoms (Somatic Symptom Disorder) or preoccupation with having or acquiring a serious illness (Illness Anxiety Disorder), causing major distress or functional impairment.
• Eating Disorders (Anorexia Nervosa, Bulimia Nervosa, Binge Eating Disorder - psychiatric co-management): Serious conditions related to persistent eating behaviors that negatively impact health, emotions, and ability to function, often requiring multidisciplinary care including psychiatric management.

Personality Disorders

• Narcissistic Personality Disorder (NPD): A pattern of grandiosity, need for admiration, and lack of empathy.
• Antisocial Personality Disorder (ASPD): A pattern of disregarding or violating the rights of others, often involving deceitfulness, impulsivity, irritability, and lack of remorse.
• Borderline Personality Disorder (BPD): Characterized by instability in interpersonal relationships, self-image, emotions, and marked impulsivity.

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

• Capacity Assessment (Mental Capacity/Competency Evaluation - specific contexts): Specialized evaluations to determine an individual's mental capacity to make informed decisions regarding treatment, finances, or other legal matters, often in forensic or geriatric settings.
• Cognitive Behavioral Therapy (CBT): A structured, goal-oriented psychotherapy that helps individuals identify and change negative thought patterns and behaviors contributing to mental health problems like depression, anxiety, and OCD.
• 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.
• Medication Management for ADHD in Adults & Children/Adolescents: Prescription and monitoring of stimulant and non-stimulant medications for Attention-Deficit/Hyperactivity Disorder across the lifespan.
• Interpersonal Therapy (IPT): A time-limited therapy that focuses on interpersonal relationships and social functioning as they relate to current psychiatric symptoms, particularly depression.

Note: This list provides a general overview. Treatment approaches are highly individualized. Please discuss with Dr. Sequeira 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.

McMaster University Medical Centre is situated in Toronto's Rosedale neighbourhood, offering easy access to patients from across the city. The practice is conveniently located near Polson Pier and Port Lands, with excellent public transit options including TTC (Subway, Streetcar, Bus). The facility is wheelchair accessible and aims to provide a comfortable and private environment for all patients. Parking is available at or near the facility, with designated accessible spots to accommodate patients with mobility needs. The practice maintains a discreet, welcoming atmosphere, designed to foster trust and comfort for those seeking mental health care in Toronto.

Are psychiatric consultations and treatments with Sequeira, 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 Sequeira 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 Sequeira's office or Ontario Health Insurance Plan (OHIP).

Do I need a referral to see Sequeira, 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 Sequeira 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.

Does Sequeira offer psychotherapy (talk therapy)?

Many psychiatrists, including potentially Sequeira, are trained in various forms of psychotherapy (talk therapy) and may offer it as part of their treatment approach, either as a standalone treatment or in combination with medication. The specific types of psychotherapy offered can vary (e.g., Cognitive Behavioral Therapy - CBT, psychodynamic therapy, supportive therapy). It's best to inquire directly with Sequeira's office or discuss this during your initial consultation to understand her approach to therapy and if it's a service She provides or if She would refer you to another mental health professional like a psychologist or social worker for more intensive or specialized psychotherapy if needed.

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

It's common for psychotropic medications to have potential side effects, especially when starting a new medication or adjusting a dose. Sequeira will discuss common side effects to watch for. If you experience side effects, it's very important to communicate this to Sequeira or her office promptly. Do not stop taking your medication suddenly unless instructed to do so by Sequeira, as this can sometimes cause withdrawal symptoms or a worsening of your condition. Sequeira 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 Sequeira?

For your first psychiatric appointment with Sequeira, 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 Sequeira can also ensure you get the most out of your consultation.

When should someone consider a referral to a Psychiatrist like Sequeira?

A referral to a Psychiatrist like Dr. Sequeira is typically considered when mental health symptoms are severe, persistent, complex, or not responding adequately to initial treatments provided by a family doctor or therapist. This can include: thoughts of suicide or self-harm; severe depression or mania; psychosis (hallucinations, delusions); debilitating anxiety or panic attacks; complex PTSD; severe OCD; suspected bipolar disorder or schizophrenia; treatment-resistant depression; or when medication management by a psychiatrist is indicated. Psychiatrists are also consulted for diagnostic clarification and comprehensive treatment planning, especially for co-occurring conditions.

How is confidentiality handled in psychiatric care?

Confidentiality is a cornerstone of psychiatric care. Information you share with Dr. Sequeira and her team is kept private and protected by law and professional ethics. This means your information will not be disclosed to anyone without your explicit consent, except in very specific situations where there is a legal obligation or an immediate risk of serious harm to yourself or others (e.g., imminent risk of suicide or homicide, child abuse, or a court order). Dr. Sequeira will typically discuss the limits of confidentiality with you at the beginning of your treatment.

McMaster University Medical Centre
10 Powell Avenue, Department Of Radiology
Toronto, ON M4W 2Y7

Phone: (416) 921-2395

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

Dr. Sequeira 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. Sequeira 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/Sequeira-Denise/0042894-56872