Dr. Daniel Howard Greben

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

Personality Disorders

• Obsessive-Compulsive Personality Disorder (OCPD): A preoccupation with orderliness, perfectionism, and mental and interpersonal control, at the expense of flexibility, openness, and efficiency (distinct from OCD).
• Antisocial Personality Disorder (ASPD): A pattern of disregarding or violating the rights of others, often involving deceitfulness, impulsivity, irritability, and lack of remorse.

Substance-Related & Addictive Disorders (Dual Diagnosis)

• Dual Diagnosis (Co-occurring Substance Use Disorder & Other Mental Illness): The simultaneous presence of a substance use disorder and one or more other psychiatric disorders (e.g., depression, anxiety, bipolar disorder, schizophrenia).
• Cannabis Use Disorder: Continued use of cannabis despite clinically significant impairment or distress.

Other Psychiatric Conditions & Focus Areas

• Dissociative Disorders: Conditions involving disruptions or breakdowns of memory, consciousness, awareness, identity, and/or perception, often linked to trauma.
• 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.

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

• 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.
• 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.
• Second Opinion Consultations for Complex Psychiatric Cases: Providing expert second opinions on challenging diagnoses, treatment-resistant conditions, or complex psychopharmacological management plans.
• Management of Sleep Disorders (Insomnia, Parasomnias - psychiatric aspects): Pharmacological and behavioral approaches to treating sleep difficulties that are secondary to or co-occurring with psychiatric conditions.
• Dialectical Behavior Therapy (DBT) - Skills Training / Informed Therapy: Providing DBT-informed therapy or facilitating DBT skills groups to help individuals manage intense emotions, reduce self-harming behaviors, and improve relationships, particularly for borderline personality disorder.
• Supportive Psychotherapy: A therapeutic approach aimed at reducing distress, reinforcing coping mechanisms, and improving adaptive functioning through a supportive therapeutic relationship.

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

Dr. Greben practices at a reputable mental health clinic located in Toronto's Little Portugal, Trinity neighborhood. The facility is situated within easy reach of the Art Gallery of Ontario and Kensington Market, with convenient access via public transit options including the TTC subway, streetcar, and bus services. The clinic is wheelchair accessible and designed to provide a comfortable, private, and discreet environment for all patients. Parking is available at or near the facility, with designated accessible spots to ensure ease of access. The setting emphasizes a welcoming atmosphere that respects patient confidentiality and promotes a sense of safety for those seeking mental health care.

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

Do I need a referral to see Greben, 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 Greben 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 does a Psychiatrist like Greben specialize in?

A Psychiatrist is a medical doctor (MD) who has completed specialized training in psychiatry, which is the branch of medicine focused on the diagnosis, treatment, and prevention of mental, emotional, and behavioral disorders. Unlike psychologists, psychiatrists can prescribe medication. He is a Psychiatrist who assesses, diagnoses, and treats mental, emotional, and behavioral disorders through medication, psychotherapy, or other interventions. Greben is trained to assess both the mental and physical aspects of psychological problems and can provide a range of treatments including psychotherapy, medications, and sometimes other interventions like ECT or rTMS.

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

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

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

The main difference is that a Psychiatrist, like Greben, 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.

Does Greben offer psychotherapy (talk therapy)?

Many psychiatrists, including potentially Greben, 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 Greben's office or discuss this during your initial consultation to understand his approach to therapy and if it's a service He provides or if He would refer you to another mental health professional like a psychologist or social worker for more intensive or specialized psychotherapy if needed.

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

A referral to a Psychiatrist like Dr. Greben 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 specialist is indicated. Psychiatrists are also consulted for diagnostic clarification and comprehensive treatment planning, especially for co-occurring conditions.

Unit #4, 100 Stokes St
Toronto, ON M6J 1H4

Phone: (416) 979-6896 | Fax: (416) 583-1240

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

Dr. Greben 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. Greben 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/Greben-Daniel-Howard/0042790-56768