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

Dr. Peter H Witham, MD

Individual provider Internal Medicine Physician · NPI 1417043639

Dr. Peter H Witham, MD is an Internal Medicine in Southwest Harbor, Maine. Graduated from George Washington University School of Medicine in 1988, 38 years ago. Practices with Mount Desert Island Hospital, a 59-clinician group and accepts Medicare assignment. Licensed in Maine and Vermont.

Years since qualifying
38
Trained at
George Washington University School of Medicine
Licensed in
ME, VT
In the registry since
2006
Specialties on file
2
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

16 Community Ln
Southwest Harbor, ME 04679-4273
Phone: (207) 244-5630
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 MD19832 (ME)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0420010126 (VT)

Record details

NPI number1417043639
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESAugust 23, 2019
Mailing address50 Union Street, Ellsworth, ME 04605

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Mount Desert Island Hospital — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount