Internal Medicine in Amherst, Massachusetts
Data updated monthly · Last refresh September 2026
13 Internal Medicine providers practice in Amherst. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Amherst
Listed alphabetically. 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. Alan Berkenwald, MDAmherst, MA · $30 in drug and device payments (2025) · Telehealth ·
(413) 256-8561 Dr. Alan Calhoun, MDAmherst, MA · No drug or device payments recorded (2025) ·
(413) 577-5000 Dr. Anne Weaver, M.D.Amherst, MA · No drug or device payments recorded (2025) ·
(413) 549-8888 Dr. Charles Hinckley, MDAmherst, MA · No drug or device payments recorded (2025) ·
(413) 577-5000 Dr. Constance Lentz, MDAmherst, MA · No drug or device payments recorded (2025) ·
(413) 577-5000 Dr. Denise Spence, MDAmherst, MA · No drug or device payments recorded (2025) · Telehealth ·
(413) 549-7080 Dr. Donald Lundgren, M.D.Amherst, MA · No drug or device payments recorded (2025) ·
(413) 256-0679 Dr. Lesley Harrington, MDAmherst, MA · No drug or device payments recorded (2025) ·
(413) 256-8561 Dr. Michelle Duffelmeyer, MD Dr. Robert Vigderman, M.D.Amherst, MA · No drug or device payments recorded (2025) · Telehealth ·
(413) 256-8561 Dr. Samah Jafari, M.D.Amherst, MA · No drug or device payments recorded (2025) ·
(413) 835-0067 Dr. Shayne Taylor, M.D.Amherst, MA · No drug or device payments recorded (2025) ·
(413) 549-8400 Dr. Yarima Santiago, MDAmherst, MA · No drug or device payments recorded (2025) · Telehealth ·
(413) 549-8888 Conditions Internal Medicine providers in Amherst, 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 Amherst, Massachusetts?There are 13 Internal Medicine providers with active NPI records practicing in Amherst, according to federal NPPES data refreshed monthly.
What conditions do Internal Medicine providers in Amherst treat?Internal Medicine providers in Amherst 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 records 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.
All specialties in Amherst Internal Medicine across Massachusetts