Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Evan William Gwyn, MD

Individual provider Internal Medicine Physician · NPI 1154558500

Dr. Evan William Gwyn, MD is an Internal Medicine in Boston, Massachusetts. Qualified in 2009, 17 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
17
Licensed in
MA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

55 Fruit Street Hospital Medicine Unit Blake 1500
Boston, MA 02114
Phone: (617) 724-3874
Fax: (617) 724-9428
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 75 Francis St, Boston, MA 02115-6110 — (617) 732-5500
  • 330 Brookline Ave, Boston, MA 02215-5400 — (504) 669-3411
  • 1153 Centre St, Jamaica Plain, MA 02130-3446 — (617) 983-7000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 240175 (MA)

Record details

NPI number1154558500
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 12, 2009
Last updated in NPPESDecember 29, 2025
Certification dateDecember 29, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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