Overview
Gary Portnay is a primary care provider, practicing in Internal Medicine in Billerica, Massachusetts.
His clinical expertise encompasses Type 2 Diabetes (T2D), Hypothyroidism, Maturity Onset Diabetes of the Young, and High Cholesterol.
Specialties
Licenses
Languages Spoken
Gender
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- HMO
Locations
790 Boston Rd, Billerica, MA 01821
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Frequently Asked Questions about Dr. Gary I. Portnay
How do I make an appointment with Dr. Gary I. Portnay?
You can book an appointment with Dr. Gary I. Portnay by calling their office at 781-505-8700. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. Gary I. Portnay a top-rated expert for Type 2 Diabetes (T2D)?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. Gary I. Portnay is classified as an Experienced expert for Type 2 Diabetes (T2D), meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. Gary I. Portnay specialize in?
While Dr. Gary I. Portnay is a Internal Medicine, they have specific expertise in Type 2 Diabetes (T2D), Hypothyroidism, and Maturity Onset Diabetes of the Young. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Internal Medicine.
Does Dr. Gary I. Portnay accept my insurance?
Dr. Gary I. Portnay accepts most major insurance plans, including Tufts. We recommend calling the office directly at 781-505-8700 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Acute CystitisDr. Portnay isExperienced. Learn about Acute Cystitis.
- Anaplastic Thyroid CancerDr. Portnay isExperienced. Learn about Anaplastic Thyroid Cancer.
- Cerebellar DegenerationDr. Portnay isExperienced. Learn about Cerebellar Degeneration.
- CirrhosisDr. Portnay isExperienced. Learn about Cirrhosis.
- Diabetic NeuropathyDr. Portnay isExperienced. Learn about Diabetic Neuropathy.
- Familial Combined HyperlipidemiaDr. Portnay isExperienced. Learn about Familial Combined Hyperlipidemia.
- Familial HypertensionDr. Portnay isExperienced. Learn about Familial Hypertension.
- Glucocorticoid-Remediable AldosteronismDr. Portnay isExperienced. Learn about Glucocorticoid-Remediable Aldosteronism.
- High CholesterolDr. Portnay isExperienced. Learn about High Cholesterol.
- HypertensionDr. Portnay isExperienced. Learn about Hypertension.
- HypothyroidismDr. Portnay isExperienced. Learn about Hypothyroidism.
- Maturity Onset Diabetes of the YoungDr. Portnay isExperienced. Learn about Maturity Onset Diabetes of the Young.
- Obesity in ChildrenDr. Portnay isExperienced. Learn about Obesity in Children.
- Type 2 Diabetes (T2D)Dr. Portnay isExperienced. Learn about Type 2 Diabetes (T2D).
- XanthomaDr. Portnay isExperienced. Learn about Xanthoma.

