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
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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. Henry Merola, M.D.Waltham, MA · $128 in drug and device payments (2025) ·
(781) 894-8200 Dr. Joanna Schwartz, M.D.Waltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 487-4040 Dr. Julie Pfeffer, MDWaltham, MA · No drug or device payments recorded (2025) ·
(781) 647-6920 Dr. Leslie Vensel, MDWaltham, MA · No drug or device payments recorded (2025) ·
(781) 487-4350 Dr. Linda Pololi, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 736-8135 Dr. Maria Ponsillo, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 434-4226 Dr. Mark Shankman, MDWaltham, MA · No drug or device payments recorded (2025) ·
(617) 243-5590 Dr. Matthew Fickie, MDWaltham, MA · No drug or device payments recorded (2025) ·
(781) 647-6920 Dr. Monica Manandhar, MDWaltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 487-4350 Dr. Nathaniel Gunn, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 693-3786 Dr. Philip Reilly, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 398-0702 Dr. Rachel Ackerman, MDWaltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 647-6920 Dr. Steven Kanner, MDWaltham, MA · No drug or device payments recorded (2025) ·
(781) 684-0600 Dr. Thomas Fry, MDWaltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 487-4350 Dr. Vanessa Vidal, M.D.Waltham, MA · No drug or device payments recorded (2025) ·
(781) 647-6920 Dr. Wissam Khoory, M.D.Waltham, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 893-4490 Dr. Elam Safi, M.D.Ware, MA · $202 in drug and device payments (2025) · Telehealth ·
(413) 967-5562 Dr. Michael Hakim, M.D.Ware, MA · $888 in drug and device payments (2025) · Telehealth ·
(413) 967-5562 Dr. Thoronage Kankanam Gamage, MDWare, MA · No drug or device payments recorded (2025) ·
(413) 967-2532 Dr. Amy Wiegandt, MDWareham, MA · $174 in drug and device payments (2025) · Telehealth ·
(508) 295-4902 Dr. Daniel MillerWareham, MA · No drug or device payments recorded (2025) ·
(508) 273-4950 Dr. Joseph Sullivan, MDWareham, MA · $214 in drug and device payments (2025) ·
(508) 295-7174 Dr. Kevin Delahanty, M.D.Wareham, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 273-4950 Dr. Radford Reynolds, MDWareham, MA · No drug or device payments recorded (2025) ·
(508) 273-4950 Dr. Randy Caplan, D.O.Wareham, MA · No drug or device payments recorded (2025) ·
(508) 295-3848 Dr. Robert Mcgowen, MDWareham, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 273-4950 Dr. Rose Shorter, MDWareham, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 273-4950 Dr. Sirjana Dhungana Parajuli, MDWareham, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 973-5919 Dr. Thomas Geagan, MDWareham, MA · No drug or device payments recorded (2025) ·
(508) 291-4450 Dr. Zachary Zanfes, D.O.Wareham, MA · No drug or device payments recorded (2025) · Telehealth ·
(508) 273-4950 Dr. Alberto Yu-wong, M.D.Watertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(617) 924-6484 Dr. Andrew Cutler, MDWatertown, MA · $11,491 in drug and device payments (2025) · Telehealth ·
(617) 926-9000 Dr. Anne St. Goar, M.D.Watertown, MA · No drug or device payments recorded (2025) ·
(617) 972-5200 Dr. Audrey Wagner, M.D.Watertown, MA · No drug or device payments recorded (2025) ·
(617) 972-5200 Dr. Barbara Spivak, MDWatertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(617) 926-9000 Dr. Cindi Slater, MDWatertown, MA · No drug or device payments recorded (2025) ·
(888) 897-1887 Dr. Damaris NouWatertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(617) 972-5230 Dr. David Cancian, MDWatertown, MA · No drug or device payments recorded (2025) ·
(617) 926-9000 Dr. Ehsan Azimi, M.D.Watertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(617) 972-5512 Dr. Heather Wolf, M.D.Watertown, MA · No drug or device payments recorded (2025) ·
(617) 972-5240 Dr. Hoang-oanh Doan, DOWatertown, MA · $139 in drug and device payments (2025) · Telehealth ·
(617) 924-6484 Dr. Hui-shien Loh, MDWatertown, MA · $24 in drug and device payments (2025) ·
(617) 507-9166 Dr. Jahansouz Shokri, M.D.Watertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(617) 972-5240 Dr. Jeffrey Greenberg, M.D.Watertown, MA · $53 in drug and device payments (2025) ·
(781) 291-3042 Dr. Joo Kim, M.D.Watertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(617) 972-5200 Dr. Mark Bauer, M.D.Watertown, MA · No drug or device payments recorded (2025) ·
(617) 972-5200 Dr. May Riad, MDWatertown, MA · No drug or device payments recorded (2025) · Telehealth ·
(781) 653-0100 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.
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