NPPES file of Aug 9, 2026

Donald Charles McMillan, D.O.

Internal Medicine Physician · Holland, MI

Donald Charles McMillan, D.O. is an internal medicine physician with a practice address in Holland, Michigan, and NPI 1831465376, issued on Mar 29, 2012. Check the license (Michigan 5101024493, as entered in NPPES) on the Michigan Board of Medicine (LARA); 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
1831465376
Name
Donald Charles McMillan
Credential
D.O.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
5101024493 MI
Self-reported in NPPES; status is on the state search
Practice location
602 Michigan Ave, Holland, MI 49423
Phone
(616) 546-4950
Enumerated
Mar 29, 2012
Record last updated
Jul 16, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190830001475); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 602 Michigan Ave

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

  1. Mikaela Andrea, LLMSWClinical Social Worker1982907507
  2. Julie Arnold, LMSWClinical Social Worker1861536823
  3. Kyle Baker, PHARMDPharmacist1699539775
  4. Lee Berens, M.D.Anesthesiology Physician1134162480
  5. Farah Berent, PAPhysician Assistant1962602862
  6. Eleanor Blouw, CRNACertified Registered Nurse Anesthetist1922040112

Verify Donald Charles McMillan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 5101024493
    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 Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

90% fewer Medicare Part D claims than the average internal medicine physician in 2024

327 Medicare Part D claims for 179 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Donald McMillan327
  2. Specialty average3,176

Most prescribed

  1. Pantoprazole Sodium22 claims
  2. Metoprolol Succinate17 claims
  3. Amoxicillin-Clavulanate Potass16 claims
  4. Prednisone16 claims
  5. Atorvastatin Calcium14 claims
  6. Furosemide14 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 MIPS final score for 2023 (Medicare payment program): 100 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 score100.0
  2. Costout of 100 · 30%100.0
  3. Promoting interoperabilitynot scored (reweighted)
  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).

One hospital affiliation

  1. Holland Community HospitalHolland, MI · Acute Care Hospitals5 of 5 stars

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). Star ratings are CMS hospital ratings, not ratings of this provider.

33 internal medicine physician records list a practice address in Holland

They are 33 of the 2,124 NPPES records with a practice address in Holland, and 5,735 internal medicine physician records in Michigan.

Other internal medicine physician records in Michigan

  1. Jamie Therese Abad, MDDetroit, MI1700573359
  2. Tomas Abalo, M.D.Iron Mountain, MI1336199975
  3. Ali Abbas, M.D.Pontiac, MI1972167526
  4. Sura Abbas, MDWarren, MI1801687405
  5. Ramzi Abbasi, MDSaginaw, MI1164270005
  6. Saadat Abbasi, MDKalamazoo, MI1912005596
  7. Shahzaman Abbasi, MDLansing, MI1376512111
  8. Youssef Abbiss, D.O.Mount Clemens, MI1982991881
  9. Valerie Abbott, MDSouthfield, MI1740289487
  10. Samer Abboud, MDSaginaw, MI1245804178

Common questions

What is Donald Charles McMillan, D.O.'s NPI number?

Donald Charles McMillan, D.O.'s National Provider Identifier (NPI) is 1831465376, issued on Mar 29, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Donald Charles McMillan, D.O. located?

The NPPES record lists a practice address at 602 Michigan Ave, Holland, MI, 49423. Phone: (616) 546-4950. Providers update this record themselves, so call before visiting.

How can I verify Donald Charles McMillan, D.O.'s license?

NPPES lists Michigan license number 5101024493, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Donald Charles McMillan, D.O. prescribe under Medicare Part D?

In 2024, Donald Charles McMillan, D.O. had 327 Medicare Part D claims for 179 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Donald Charles McMillan, D.O.'s MIPS final score?

The 2023 MIPS final score is 100 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.

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.