Peter J. Ossanna, MD
Internal Medicine Physician · Ellsworth, ME
Peter J. Ossanna, MD is an internal medicine physician with a practice address in Ellsworth, Maine, and NPI 1942249842, issued on Jun 6, 2006. Check the license (Maine 013096, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Peter J. Ossanna
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 013096 ME
Self-reported in NPPES; status is on the state search - Practice location
- 50 Union St, Ellsworth, ME 04605
- Phone
- (207) 664-5480
- Enumerated
- Jun 6, 2006
- Record last updated
- Aug 1, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (207) 664-5490
- Medicare enrollment
- Enrolled (PECOS I20050627000214); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1988
- Entity
- Type 1 · individual
Also registered at 50 Union St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Alexander, MDInternal Medicine Physician1841230588
- Mercedes Ang, M.D.Internal Medicine Physician1033341813
- Jason Berube, PHARMDPharmacist1891128021
- Alexandria Boley, DOPediatrics Physician1811359896
- Wesam Bolkhir, M.D.Hospitalist Physician1407060189
- Amy Case, PAPhysician Assistant1396998266
Verify Peter J. Ossanna in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 013096Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
10 internal medicine physician records list a practice address in Ellsworth
They are 10 of the 453 NPPES records with a practice address in Ellsworth, and 597 internal medicine physician records in Maine.
All 10 in Ellsworth → All 597 in Maine → Every provider in Ellsworth →
Other internal medicine physician records in Maine
- George Abboud, MDBiddeford, ME1376612945
- Karen Abernathy, M.D.Rockport, ME1124312335
- Hassan Abouleish, MDHoulton, ME1255300307
- Philip Abraham, M.D.Kittery, ME1497750764
- Elizabeth Ackerson, MDPortland, ME1912920117
- Lindsey Ackley-Pozzessere, DOBrunswick, ME1477991842
- Todd Adams, MDMoody, ME1427165778
- Muhammad Umer Ahmed, MDBangor, ME1134893183
- Samer Al-Ameri, MDBangor, ME1225514854
- Ali Al-OmariBangor, ME1447634431
Common questions
What is Peter J. Ossanna, MD's NPI number?
Peter J. Ossanna, MD's National Provider Identifier (NPI) is 1942249842, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter J. Ossanna, MD located?
The NPPES record lists a practice address at 50 Union St, Ellsworth, ME, 04605. Phone: (207) 664-5480. Providers update this record themselves, so call before visiting.
How can I verify Peter J. Ossanna, MD's license?
NPPES lists Maine license number 013096, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Peter J. Ossanna, MD's MIPS final score?
The 2023 MIPS final score is 88 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.