NPPES file of Aug 9, 2026

Nathan G. Donaldson, DO

Emergency Medical Services (Emergency Medicine) Physician · Bar Harbor, ME

Nathan G. Donaldson, DO is an emergency medical services (emergency medicine) physician with a practice address in Bar Harbor, Maine, and NPI 1831314855, issued on Apr 16, 2007. Check the license (Maine DO2476, 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 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831314855
Name
Nathan G. Donaldson
Credential
DO
Primary taxonomy
Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
License number
DO2476 ME
Self-reported in NPPES; status is on the state search
Practice location
10 Wayman LN, Bar Harbor, ME 04609
Phone
(207) 288-5081
Enumerated
Apr 16, 2007
Record last updated
Jul 21, 2022
Fax
(207) 288-7024
Medicaid ID
1831314855 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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Also registered at 10 Wayman LN

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Allerding, D.OFamily Medicine Physician1104895747
  2. Angela Arnold-Ross, RN, MSNFamily Nurse Practitioner1548713191
  3. Lynne Assaf, MSWClinical Social Worker1740307313
  4. Katelynn Badger, CRNACertified Registered Nurse Anesthetist1710508478
  5. Kyla Baxter, OTR/LPhysical Rehabilitation Occupational Therapist1902761331
  6. Brenda Beckett, P.A.-CMedical Physician Assistant1134214018

Verify Nathan G. Donaldson 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 DO2476
    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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94% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024

17 Medicare Part D claims for 14 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D.

  1. Nathan Donaldson17
  2. Specialty average292

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): 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.

  1. Qualityout of 100 · 30% of the final score78.7
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Nathan G. Donaldson among 18 emergency medical services (emergency medicine) physician records in Maine

Nathan G. Donaldson, DO is one of 18 emergency medical services (emergency medicine) physician records with a practice address in Maine. 50% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 67% of them.

  • NPI issued2007 · 67% of these records are older, 17% newer
  • In a Medicare fileYes · 50% of these records are
  • In the CMS Doctors and Clinicians fileNo · 22% of these records are
  • Record last updated2022 · 83% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medical Services (Emergency Medicine) Physician providers in Maine

There are 18 emergency medical services (emergency medicine) physician records in Maine.

The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes

  1. Arthur Manning, DOEllsworth, ME 046051740223205
  2. Charles Markowitz, MDEllsworth, ME 046051588606586
  3. Carl D'Amato, MDDamariscotta, ME 045431679563753
  4. Janet Fowle, MDDamariscotta, ME 045431356332969
  5. Don Gow, DODamariscotta, ME 045431629059829
  6. James Li, M.D.Damariscotta, ME 045431699766147
  7. Alexander Mesrobian, MDDamariscotta, ME 045431134100332
  8. Peter Hulsey, D.O.Bangor, ME 044011598973489

Common questions

What is Nathan G. Donaldson, DO's NPI number?

Nathan G. Donaldson, DO's National Provider Identifier (NPI) is 1831314855, issued on Apr 16, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Nathan G. Donaldson, DO located?

The NPPES record lists a practice address at 10 Wayman LN, Bar Harbor, ME, 04609. Phone: (207) 288-5081. Providers update this record themselves, so call before visiting.

How can I verify Nathan G. Donaldson, DO's license?

NPPES lists Maine license number DO2476, 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 Nathan G. Donaldson, DO prescribe under Medicare Part D?

In 2024, Nathan G. Donaldson, DO had 17 Medicare Part D claims for 14 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. Part D covers Medicare prescriptions only.

What is Nathan G. Donaldson, DO'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.