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Dr. Gary I. Portnay, MD

Endocrinology, Diabetes & Metabolism

Dr. Portnay's Overview

Dr. Gary I. Portnay graduated from the Rosalind Franklin University/ Chicago Medical School in 1968. He works in Billerica, MA and specializes in Endocrinology, Diabetes & Metabolism and Internal Medicine. Dr. Portnay is affiliated with Winchester Hospital.

Dr. Portnay's Experience

Years in Practice: 47

Dr. Portnay's Specialties

Endocrinology, Diabetes & Metabolism, Internal Medicine

Dr. Portnay's Education & Training

Medical School: Rosalind Franklin University/ Chicago Medical School; Graduated 1968

Dr. Portnay's Rating

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Dr. Portnay's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • BCBS MA Blue Care Elect PPO
  • BCBS MA HMO Blue with Managed Care Behavioral Health
  • BCBS MA Preferred Blue PPO
  • CIGNA LocalPlus
  • View More

Dr. Portnay's Office Information & Appointments

Office Locations

Harvard Vanguard Medical Associates
Harvard Vanguard

790 Boston Rd Ste 101
Billerica, MA 01821
(781) 505-8780


Office Hours and Information

Fax: (781) 505-8775

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 8:00 AM - 5:00 PM
Tuesday 8:00 AM - 5:00 PM
Wednesday 8:00 AM - 5:00 PM
Thursday 8:00 AM - 5:00 PM
Friday 8:00 AM - 5:00 PM
Saturday 8:30 AM - 12:00 PM
Sunday Closed

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Dr. Portnay's Hospital Affiliations

Office Locations

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