The 20 Best Opioid Use Disorder Doctors Near Me in Ontario, CA

Find the Top Opioid Use Disorder Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 103 doctor with experience in Opioid Use Disorder near Ontario, CA. Of these, 86 are Experienced, 11 are Advanced, 5 are Distinguished and 1 are Elite.

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103 providers found
    Elite in Opioid Use Disorder

    Bernard Le Foll
    Elite in Opioid Use Disorder

    Bernard Le Foll
    250 College Street, M5T 1R8, 
    Toronto, ON, CA 

    Bernard Le Foll practices practicing medicine in Toronto, Canada. Mr. Le Foll is rated as an Elite expert by MediFind in the treatment of Opioid Use Disorder. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Opioid Use Disorder, Chronic Pain, Post-Traumatic Stress Disorder (PTSD), Major Depression, and Deep Brain Stimulation.

    Distinguished in Opioid Use Disorder

    Nitika Sanger
    Distinguished in Opioid Use Disorder

    Nitika Sanger
    1280 Main St. West, 
    Hamilton, ON, CA 

    Nitika Sanger practices practicing medicine in Hamilton, Canada. Ms. Sanger is rated as a Distinguished expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder, COVID-19, Severe Acute Respiratory Syndrome (SARS), and Familial Colorectal Cancer.

    Distinguished in Opioid Use Disorder

    Tea Rosic
    Distinguished in Opioid Use Disorder

    Tea Rosic
    401 Smyth Rd, K1H 8L1, 
    Ottawa, ON, CA 

    Tea Rosic practices practicing medicine in Ottawa, Canada. Ms. Rosic is rated as a Distinguished expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder, Severe Acute Respiratory Syndrome (SARS), and COVID-19.

    Learn about our expert tiers
    Distinguished in Opioid Use Disorder

    Zainab Samaan
    Distinguished in Opioid Use Disorder

    Zainab Samaan
    St. Joseph's Healthcare Hamilton, 100 West 5th St, 
    Hamilton, ON, CA 

    Zainab Samaan practices practicing medicine in Hamilton, Canada. Ms. Samaan is rated as a Distinguished expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder, Major Depression, Chronic Pain, and Hepatitis C.

    Distinguished in Opioid Use Disorder

    David C. Marsh
    Distinguished in Opioid Use Disorder

    David C. Marsh
    935 Ramsey Lake Road, P3E 2C6, 
    Greater Sudbury, ON, CA 

    David Marsh practices practicing medicine in Greater Sudbury, Canada. Mr. Marsh is rated as a Distinguished expert by MediFind in the treatment of Opioid Use Disorder. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Opioid Use Disorder, Chronic Pain, Hepatitis C, and COVID-19.

    Distinguished in Opioid Use Disorder

    Andrew S. Worster
    Distinguished in Opioid Use Disorder

    Andrew S. Worster
    Hamilton, ON, CA 

    Andrew Worster practices practicing medicine in Hamilton, Canada. Mr. Worster is rated as a Distinguished expert by MediFind in the treatment of Opioid Use Disorder. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Transient Ischemic Attack (TIA), Opioid Use Disorder, Heart Attack, Acute Coronary Syndrome, and Heart Bypass Surgery.

    Advanced in Opioid Use Disorder

    Vitor S. Tardelli
    Advanced in Opioid Use Disorder

    Vitor S. Tardelli
    Toronto, ON, CA 

    Vitor Tardelli practices practicing medicine in Toronto, Canada. Mr. Tardelli is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Opioid Use Disorder and Chronic Pain.

    Advanced in Opioid Use Disorder

    Tara F. Gomes
    Advanced in Opioid Use Disorder

    Tara F. Gomes
    Toronto, ON, CA 

    Tara Gomes practices practicing medicine in Toronto, Canada. Ms. Gomes is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Opioid Use Disorder, COVID-19, Neonatal Abstinence Syndrome, Severe Acute Respiratory Syndrome (SARS), and Hormone Replacement Therapy (HRT).

    Advanced in Opioid Use Disorder

    Balpreet Panesar
    Advanced in Opioid Use Disorder

    Balpreet Panesar
    Mississauga, ON, CA 

    Balpreet Panesar practices practicing medicine in Mississauga, Canada. Panesar is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Opioid Use Disorder.

    Advanced in Opioid Use Disorder

    Zainab Samaan
    Advanced in Opioid Use Disorder

    Zainab Samaan
    100 West 5th St, 
    Hamilton, ON, CA 

    Zainab Samaan practices practicing medicine in Hamilton, Canada. Samaan is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Opioid Use Disorder.

    Advanced in Opioid Use Disorder

    Abhimanyu Sud
    Advanced in Opioid Use Disorder

    Abhimanyu Sud
    Toronto, ON, CA 

    Abhimanyu Sud practices practicing medicine in Toronto, Canada. Mr. Sud is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Chronic Pain, Opioid Use Disorder, ADULT Syndrome, and Fibromyalgia.

    Advanced in Opioid Use Disorder

    Alessia D'elia
    Advanced in Opioid Use Disorder

    Alessia D'elia
    1Department Of Psychiatry And Behavioural Neuroscience, 100 West 5th Street, 
    Hamilton, ON, CA 

    Alessia D'elia practices practicing medicine in Hamilton, Canada. Ms. D'elia is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder.

    Advanced in Opioid Use Disorder

    Alannah Hillmer
    Advanced in Opioid Use Disorder

    Alannah Hillmer
    Hamilton, ON, CA 

    Alannah Hillmer practices practicing medicine in Hamilton, Canada. Ms. Hillmer is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder.

    Advanced in Opioid Use Disorder

    Caroul Chawar
    Advanced in Opioid Use Disorder

    Caroul Chawar
    100 West 5th St, 
    Hamilton, ON, CA 

    Caroul Chawar practices practicing medicine in Hamilton, Canada. Chawar is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Opioid Use Disorder.

    Advanced in Opioid Use Disorder

    Heather M. Shapiro
    Advanced in Opioid Use Disorder

    Heather M. Shapiro
    Mount Sinai Hospital, 
    ON, CA 

    Heather Shapiro practices practicing medicine in Canada. Ms. Shapiro is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder, Tubal Disease, Infertility, HIV/AIDS, and Tubal Ligation.

    Advanced in Opioid Use Disorder

    Nikki Bozinoff
    Advanced in Opioid Use Disorder

    Nikki Bozinoff
    1 King's College Circle, 
    Toronto, ON, CA 

    Nikki Bozinoff practices practicing medicine in Toronto, Canada. Ms. Bozinoff is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder, Hepatitis C, Hepatitis, and HIV/AIDS.

    Advanced in Opioid Use Disorder

    Monica Bawor
    Advanced in Opioid Use Disorder

    Monica Bawor
    1Department Of Psychiatry And Behavioural Neuroscience, 100 West 5th Street, 
    Hamilton, ON, CA 

    Monica Bawor practices practicing medicine in Hamilton, Canada. Ms. Bawor is rated as an Advanced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Opioid Use Disorder, Rhabdomyolysis, and Chronic Pain.

    Experienced in Opioid Use Disorder

    Claire M. De Oliveira
    Experienced in Opioid Use Disorder

    Claire M. De Oliveira
    Toronto, ON, CA 

    Claire De Oliveira practices practicing medicine in Toronto, Canada. Ms. De Oliveira is rated as an Experienced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Anorexia, Bulimia, Opioid Use Disorder, and Schizophrenia.

    Experienced in Opioid Use Disorder

    Gary E. Garber
    Experienced in Opioid Use Disorder

    Gary E. Garber
    Ottawa, ON, CA 

    Gary Garber practices practicing medicine in Ottawa, Canada. Mr. Garber is rated as an Experienced expert by MediFind in the treatment of Opioid Use Disorder. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Hepatitis C, Hepatitis, Urinary Tract Infection (UTI), and Sepsis.

    Experienced in Opioid Use Disorder

    Astrid Guttmann
    Experienced in Opioid Use Disorder

    Astrid Guttmann
    2075 Bayview Avenue, G106, 
    Toronto, ON, CA 

    Astrid Guttmann practices practicing medicine in Toronto, Canada. Ms. Guttmann is rated as an Experienced expert by MediFind in the treatment of Opioid Use Disorder. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Neonatal Abstinence Syndrome, Medium-Chain Acyl-CoA Dehydrogenase Deficiency, COVID-19, Severe Acute Respiratory Syndrome (SARS), and Gastrostomy.

    While we make every effort to provide the best results possible, data is currently limited outside of the United States. Doctors listed may include both clinicians and researchers, and individuals relocate frequently. We recommend contacting doctors directly to confirm their location and areas of focus. Contact information is provided when available. Learn more about our expert tiers.
    Showing 1-20 of 103

    Last Updated: 04/28/2026

    What is the definition of Opioid Use Disorder?

    Opioid-based medicines include morphine, oxycodone, and synthetic (man-made) opioid narcotics, such as fentanyl. They are often prescribed to treat pain after an injury, surgery, or a dental procedure. Sometimes, they are used to treat severe cough or diarrhea. The illegal drug heroin is also an opioid. When abused, opioids cause a person to feel relaxed and intensely happy (euphoria). In short, the medicines are used to get high.

    Opioid intoxication is a condition in which you're not only high from using the medicine, but you may also have body-wide symptoms that can make you ill or impaired.

    When should I see an Opioid Use Disorder doctor in Ontario, CA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing an Opioid Use Disorder doctor in Ontario, CA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How do I find the best Opioid Use Disorder doctor in Ontario, CA?

    You can find an Opioid Use Disorder doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Opioid Use Disorder doctors in Ontario, CA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Opioid Use Disorder doctors in Ontario, CA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with an Opioid Use Disorder doctor in Ontario, CA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Opioid Use Disorder doctor search results page. 

    Why is it important to get a second opinion from a different Opioid Use Disorder doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with an Opioid Use Disorder doctor in Ontario, CA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Opioid Use Disorder doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Opioid Use Disorder doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Opioid Use Disorder doctors in Ontario, CA?

    Look for the filter feature on the left side of the Opioid Use Disorder doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find an Opioid Use Disorder doctor that offers video calls?

    Look for the filter feature on the left-side of the Opioid Use Disorder doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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