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

John Barber, MD

Individual provider Hospitalist Physician · NPI 1437716438

John Barber, MD is an Internal Medicine in Portland, Maine. Graduated from University of Massachusetts Medical School in 2019, 7 years ago. Practices with Mercy Hospital, a 308-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
7
Trained at
University of Massachusetts Medical School
Licensed in
ME
In the registry since
2019
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

22 Bramhall St
Portland, ME 04102-3134
Phone: (207) 662-0111
Show map & directions

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

Additional practice locations (1)

  • 175 Fore River Pkwy, Portland, ME 04102-2779 — (207) 879-3000

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD27839 (ME)

Record details

NPI number1437716438
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 24, 2019
Last updated in NPPESOctober 29, 2024
Certification dateOctober 29, 2024
Mailing address22 Bramhall St, Portland, ME 04102-3175

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2019 (7 years in practice)
Group practice Mercy Hospital — 308 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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