NPPES file of Aug 9, 2026

James C. Wasserman, M.D.

Nephrology Physician · Portland, ME

James C. Wasserman, M.D. is a nephrology physician with a practice address in Portland, Maine, and NPI 1457352874, issued on Aug 9, 2005. Check the license (Maine 013304, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1457352874
Name
James C. Wasserman
Credential
M.D.
Primary taxonomy
Nephrology Physician 207RN0300X
License number
013304 ME
Self-reported in NPPES; status is on the state search
Practice location
1600B Congress St, Portland, ME 04102
Phone
(207) 774-5222
Enumerated
Aug 9, 2005
Record last updated
May 16, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(207) 761-4433
Medicaid ID
299940099 ME
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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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.

  1. Michael Akom, M.D.Nephrology Physician1508827585
  2. Patricia Cantlin, DONephrology Physician1275533994
  3. Stephen CihockiAcute Care Nurse Practitioner1407455793
  4. Ioan Cosma, MDNephrology Physician1356540454
  5. Gary Diperna, DONephrology Physician1649567579
  6. Eric Holmes, PA-CNephrology Physician1740540293

Verify James C. Wasserman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
    Search for license 013304    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maine license search

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The MIPS final score for 2023 (Medicare payment program): 98.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.1
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

James C. Wasserman among 50 nephrology physician records in Maine

James C. Wasserman, M.D. 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 72% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileNo · 76% of these records are
  • Record last updated2012 · 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

  1. Michael Akom, M.D.Portland, ME 041021508827585
  2. Carl Blond, M.D.Portland, ME 041021174507776
  3. Patricia Cantlin, DOPortland, ME 041021275533994
  4. Ioan Cosma, MDPortland, ME 041021356540454
  5. Gary Diperna, DOPortland, ME 041021649567579
  6. Robert Isom, M.D.Portland, ME 041021356428072
  7. Mahendra Mangray, MDPortland, ME 041021801074919
  8. Paul Parker, MDPortland, ME 041021649278029

Common questions

What is James C. Wasserman, M.D.'s NPI number?

James C. Wasserman, M.D.'s National Provider Identifier (NPI) is 1457352874, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is James C. Wasserman, M.D. 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 James C. Wasserman, M.D.'s license?

NPPES lists Maine license number 013304, 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 James C. Wasserman, M.D.'s MIPS final score?

The 2023 MIPS final score is 98.1 of 100. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.