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

Sean M O'Donnell, MD

Individual provider Hospitalist Physician · NPI 1285632695

Sean M O'Donnell, MD is an Internal Medicine in Damariscotta, Maine. Graduated from Hahneman Medical College of the Pacific in 1995, 31 years ago. Practices with Mainehealth, a 2,615-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
31
Trained at
Hahneman Medical College of the Pacific
Licensed in
ME
In the registry since
2005
Specialties on file
2
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

35 Miles St
Damariscotta, ME 04543-4047
Phone: (207) 563-4146
Fax: (207) 563-3717
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 MD14975 (ME)
Hospitalist Physician Taxonomy 208M00000X · Licence 014975 (ME)

Record details

NPI number1285632695
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 9, 2005
Last updated in NPPESOctober 22, 2019

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolHAHNEMAN MEDICAL COLLEGE OF THE PACIFIC
Graduated 1995 (31 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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