Internal Medicine Doctors in Massachusetts
Data updated monthly · Last refresh October 2026
6,796 Internal Medicine providers practice in Massachusetts, including 1,960 (29%) offering telehealth. The largest concentration is in Boston. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
6,796providers
1,960telehealth
Bostontop city
Internal Medicine by city in Massachusetts
Choose a city to see providers there.
Internal Medicine providers in Massachusetts
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Rosemary Janas, FNPTewksbury, MA · $1,549 in drug and device payments (2025) ·
(978) 453-8261 Dr. Shirish Desai, M.D.Tewksbury, MA · No drug or device payments recorded (2025) ·
(978) 851-7321 Dr. Carl Johnson, MDTopsfield, MA · No drug or device payments recorded (2025) ·
(978) 921-1392 Dr. John Katzenberg, M.D.Townsend, MA · No drug or device payments recorded (2025) ·
(978) 597-1360 Dr. Lawrence Churchville, MDTownsend, MA · No drug or device payments recorded (2025) ·
(978) 597-2327 Dr. Adam Blacksin, MDTurners Falls, MA · No drug or device payments recorded (2025) ·
(413) 774-5554 Dr. Barry PoretTurners Falls, MA · No drug or device payments recorded (2025) ·
(413) 773-1856 Dr. Joseph Viadero, M.D.Turners Falls, MA · No drug or device payments recorded (2025) ·
(413) 774-3751 Dr. Laurence Klein, MDTurners Falls, MA · No drug or device payments recorded (2025) ·
(413) 774-5554 Dr. Wayne Hioe, MDTurners Falls, MA · No drug or device payments recorded (2025) ·
(413) 772-3748 Dr. Wesley Green, MDTurners Falls, MA · No drug or device payments recorded (2025) ·
(412) 863-8719 Dr. Andrew Siber, M.D.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Bruce Rosen, M.D.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Chiaki Nakata, M.D.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Dennis Pannullo, M.D.Uxbridge, MA · No drug or device payments recorded (2025) ·
(508) 278-5573 Dr. Eric Matthews, D.O.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Karen PetersonUxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Margret Chang, M.D.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Maria Patricia Miranda, M.D.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Pamela Baggeroer, M.D.Uxbridge, MA · No drug or device payments recorded (2025) ·
(508) 278-5573 Dr. Peter Dain, M.D.Uxbridge, MA · No drug or device payments recorded (2025) ·
(508) 278-5573 Dr. Robert Pollitt, D.O.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-5573 Dr. Thi Hong Van Do, M.D.Uxbridge, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 278-8341 Dr. William Muller, M.D.Uxbridge, MA · No drug or device payments recorded (2025) ·
(508) 278-5573 Dr. Kathleen Koehler, MDVineyard Haven, MA · $219 in drug and device payments (2025) · Telehealth ·
(508) 693-4400 Dr. Lawrence Miller, M.D.Waban, MA · No drug or device payments recorded (2025) ·
(617) 244-3103 Dr. Mark Costa, MDWaban, MA · No drug or device payments recorded (2025) ·
(617) 777-4080 Dr. Cathy Dowen, NPWakefield, MA · $2,014 in drug and device payments (2025) · Telehealth ·
(781) 942-0606 Dr. Davis Bu, M.D.Wakefield, MA · $24 in drug and device payments (2025) · Telehealth ·
(781) 620-4888 Dr. John Mudrock, M.D.Wakefield, MA · $24 in drug and device payments (2025) ·
(781) 620-4888 Dr. Prathima Reddy, M.D.Wakefield, MA · $163 in drug and device payments (2025) · Telehealth ·
(781) 246-9131 Dr. Adrian Pieleanu, MDWalpole, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 660-3080 Dr. Deborah Vatcher, M.D.Walpole, MA · No drug or device payments recorded (2025) ·
(508) 668-6060 Dr. Donald Gedarovich, MDWalpole, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 660-8874 Dr. Renald Leveckis, M.D.Walpole, MA · No drug or device payments recorded (2025) ·
(508) 660-6079 Dr. Renee RemilyWalpole, MA · No drug or device payments recorded (2025) ·
(508) 668-6060 Dr. Alice Zacarian, M.D.Waltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 647-6920 Dr. Allison Mcdonough, MDWaltham, MA · $408 in drug and device payments (2025) · Telehealth ·
(781) 487-4040 Dr. Bard Geesaman, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(617) 529-7111 Dr. Barry Ehrlich, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(617) 243-5590 Dr. Brittany Hansen, MDWaltham, MA · No drug or device payments recorded (2025) ·
(781) 487-6800 Dr. Christina Gelev, MDWaltham, MA · $179 in drug and device payments (2025) · Telehealth ·
(781) 487-4350 Dr. Daniel Horn, MDWaltham, MA · No drug or device payments recorded (2025) ·
(866) 849-0692 Dr. David Margulies, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(617) 549-0601 Dr. Denise Basow, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 392-2029 Dr. Devasena Balasubramaniam, M.D.Waltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 487-4350 Dr. Edward Busick, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 647-0855 Dr. Elissa Stecker, M.D,Waltham, MA · No drug or device payments recorded (2025) ·
(781) 647-6920 Dr. Hadia Tirmizi, M.D.Waltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 899-3334 Conditions Internal Medicine providers in Massachusetts commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Massachusetts?There are 6,796 Internal Medicine providers with active NPI records practicing in Massachusetts, according to federal NPPES data refreshed monthly.
Do Internal Medicine providers in Massachusetts offer telehealth?Yes. 1,960 of the 6,796 Internal Medicine providers in Massachusetts (about 29%) report offering telehealth services in CMS data.
Which cities in Massachusetts have the most Internal Medicine providers?Boston (2,322), Worcester (443), Cambridge (299) have the highest concentration of Internal Medicine providers in Massachusetts.
How many Internal Medicine providers in Massachusetts received drug or device company payments?1,344 of 6,796 Internal Medicine providers in Massachusetts (20%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Massachusetts treat?Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Internal Medicine Doctors in Massachusetts work in independent practices or large health systems?Among 3,721 Internal Medicine Doctors in Massachusetts enrolled in Medicare, 10% bill through a solo or small practice with fewer than 10 clinicians, 11% through a mid-size group of 10 to 99, and 79% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Internal Medicine Doctors in Massachusetts work at?According to CMS facility affiliation records, the Massachusetts hospitals where the most Internal Medicine Doctors hold privileges are Brigham and Women's Hospital in Boston; Massachusetts General Hospital in Boston; Beth Israel Deaconess Medical Center in Boston.
Related reading on HealthcareDiscovery.AI
Internal Medicine in all 50 states Search all 6,796 in the directory Ask Zach for help choosing
Related
