Gary Diperna, DO
Nephrology Physician · Portland, ME
Gary Diperna, DO is a nephrology physician with a practice address in Portland, Maine, and NPI 1649567579, issued on Jun 29, 2011. Check the license (Maine DO2511, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gary Diperna
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- DO2511 ME
Self-reported in NPPES; status is on the state search - Practice location
- 1600B Congress St, Portland, ME 04102
- Phone
- (207) 774-5222
- Enumerated
- Jun 29, 2011
- Record last updated
- May 28, 2026
- Fax
- (207) 761-4433
- Medicare enrollment
- Enrolled (PECOS I20150515001007); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2011
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 50 in Maine → Look up another NPI →
Also registered at 1600B Congress St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Akom, M.D.Nephrology Physician1508827585
- Patricia Cantlin, DONephrology Physician1275533994
- Stephen CihockiAcute Care Nurse Practitioner1407455793
- Ioan Cosma, MDNephrology Physician1356540454
- Eric Holmes, PA-CNephrology Physician1740540293
- Mahendra Mangray, MDNephrology Physician1801074919
Verify Gary Diperna in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license DO2511Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average nephrology physician in 2024
328 Medicare Part D claims for 87 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Lokelma26 claims
- Furosemide22 claims
- Torsemide21 claims
- Eliquis20 claims
- Prednisone20 claims
- Mycophenolate Mofetil15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 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).
Bills Medicare through one group practice
- Mainegeneral Medical CenterAugusta, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Diperna among 50 nephrology physician records in Maine
Gary Diperna, DO is one of 50 nephrology physician records with a practice address in Maine. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2011 · median 2001 among the 38 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Maine
There are 50 nephrology physician records in Maine.
All 50 in Maine → Every provider in Portland → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Michael Akom, M.D.Portland, ME 041021508827585
- Carl Blond, M.D.Portland, ME 041021174507776
- Patricia Cantlin, DOPortland, ME 041021275533994
- Ioan Cosma, MDPortland, ME 041021356540454
- Robert Isom, M.D.Portland, ME 041021356428072
- Mahendra Mangray, MDPortland, ME 041021801074919
- Paul Parker, MDPortland, ME 041021649278029
- Mark Parker, M.D.Portland, ME 041021770583346
Common questions
What is Gary Diperna, DO's NPI number?
Gary Diperna, DO's National Provider Identifier (NPI) is 1649567579, issued on Jun 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Gary Diperna, DO located?
The NPPES record lists a practice address at 1600B Congress St, Portland, ME, 04102. Phone: (207) 774-5222. Providers update this record themselves, so call before visiting.
How can I verify Gary Diperna, DO's license?
NPPES lists Maine license number DO2511, 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.
How much does Gary Diperna, DO prescribe under Medicare Part D?
In 2024, Gary Diperna, DO had 328 Medicare Part D claims for 87 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Gary Diperna, DO's MIPS final score?
The 2023 MIPS final score is 79.3 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.