Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

John R. Lamb, MD

Individual provider Internal Medicine Physician · NPI 1679552467

John R. Lamb, MD practises Internal Medicine in Oak Bluffs, Massachusetts. Graduated from State University of New York at Buffalo School of Medicine in 1979, 47 years ago. Practices with Martha's Vineyard Hospital Inc, a 142-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
47
Trained at
State University of New York at Buffalo School of Medicine
Licensed in
MA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1 Hospital Rd
Oak Bluffs, MA 02557-1406
Phone: (508) 684-4500
Fax: (508) 684-4502
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 226239 (MA)

Record details

NPI number1679552467
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 11, 2006
Last updated in NPPESMay 10, 2022
Certification dateMay 10, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Martha'S Vineyard Hospital Inc — 142 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients70
Services billed 98 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Martha's Vineyard Hospital Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 142 clinicians in the practice; 12 are shown here.

Other providers in Oak Bluffs