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

Peter J Ossanna, MD

Individual provider Internal Medicine Physician · NPI 1942249842

Peter J Ossanna, MD is an Internal Medicine in Ellsworth, Maine. Graduated from Johns Hopkins 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.

Years since qualifying
38
Trained at
Johns Hopkins University School of Medicine
Licensed in
ME
In the registry since
2006
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

50 Union St Maine Coast Memorial Hospital
Ellsworth, ME 04605-1586
Phone: (207) 664-5480
Fax: (207) 664-5490
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 013096 (ME)

Record details

NPI number1942249842
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 6, 2006
Last updated in NPPESAugust 1, 2008
Mailing address50 Union St, Maine Coast Memorial Hospital, Ellsworth, ME 04605-1586

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolJOHNS HOPKINS 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

Other providers in Ellsworth