David A. Fiellin, MD


Internal Medicine

Conditions & Treatments

Substance Abuse

(203) 688-5555
Telehealth Visits


David Fiellin, MD, is a primary care physician specializing in addiction medicine at Yale Medicine. He received his medical education at Emory University before arriving at Yale.

Dr. Fiellin believes strongly in providing nonjudgmental and empathetic support for his patients. This is particularly important for Dr. Fiellin’s patients with substance use disorders because he wants them to know that he doesn’t define them by their diagnosis.

One of the most rewarding aspects of treating patients with addictive disorders is seeing how quickly they improve in a short amount of time, says Dr. Fiellin. “There are few things we do in primary care where we see such a rapid evolution and such positive results,” he says. 

After conditions improve, Dr. Fiellin maintains relationships with his patients for years. “I have seen them often for five or ten years and we get to the point where their addictive disorder is no longer an issue and spend most of our time addressing other medical conditions or simply making sure they are up to date on their health maintenance,” he says.

In addition to treating patients with and without addiction, Dr. Fiellin conducts research on treatment of addiction in general medical settings. He is also a professor of medicine (general medicine, emergency medicine, and public health) at the Yale School of Medicine.






Years In Practice


Affiliated With

Yale Medicine


Yale New Haven Hospital Pediatric Primary Care Center

789 Howard Avenue
Primary Care Center
New Haven, CT 06519

Get Directions

Monday8:30 AM - 4:30 PM
Tuesday8:30 AM - 4:30 PM
Wednesday8:30 AM - 7:30 PM
Thursday8:30 AM - 4:30 PM
Friday8:30 AM - 4:30 PM
(203) 688-4092

Cornell Scott - Hill Health Center

150 Sargent Drive
New Haven, CT 06511

Get Directions

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
(203) 503-6579

Education & Training


Emory University School of Medicine


Yale School of Medicine

Accepted Insurance

Insurance coverage regularly changes, please contact the doctor’s office directly to verify that your specific insurance plan is accepted.

  • aetna
  • anthem bc/bs
  • berkeley care network
  • cigna healthcare
  • community care network
  • connecticare
  • corvel
  • first health network
  • focus healthcare
  • great west
  • husky
  • medicaid
  • medicare
  • multiplan
  • oxford health plans
  • railroad medicare
  • tricare/champus
  • united healthcare
  • us family health plan
  • wellcare