NPPES file of Aug 9, 2026

John William Muir, O.D.

Optometrist · Howell, MI

John William Muir, O.D. is an optometrist with a practice address in Howell, Michigan, and NPI 1639161615, issued on Aug 16, 2005. Check the license (Michigan 4901003945, as entered in NPPES) with the Michigan board that licenses this profession; 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
1639161615
Name
John William Muir
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
4901003945 MI
Self-reported in NPPES; status is on the state search
Practice location
810 E Grand River Ave, Howell, MI 48843
Phone
(517) 545-2020
Enumerated
Aug 16, 2005
Record last updated
Sep 7, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(517) 545-2002
Medicaid ID
4490133 MI
Medicare enrollment
Enrolled (PECOS I20070921000733); accepts Medicare assignment
Medical or professional school
Ferris State College - College Of Optometry, 1998
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.
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Verify John William Muir in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this profession
    Search for license 4901003945
    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
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69% fewer Medicare Part D claims than the average optometrist in 2024

86 Medicare Part D claims for 28 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 81% of claims.

  1. John Muir86
  2. Specialty average277

Most prescribed

  1. Cyclosporine45 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): 96.9 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 score56.3
  2. Costout of 100 · 30%100.0
  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, group reporting; category weights for 2023 (qpp.cms.gov).

John William Muir among 1,963 optometrist records in Michigan

John William Muir, O.D. is one of 1,963 optometrist records with a practice address in Michigan. 69% 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, 89% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated1998 · median 2009 among the 1,121 with a school on file
  • Record last updated2011 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

11 optometrist records list a practice address in Howell

They are 11 of the 1,026 NPPES records with a practice address in Howell, and 1,963 optometrist records in Michigan.

The 8 optometrist records with the nearest ZIP codes

  1. Joseph Conrad, OD, MSHowell, MI 488431831486935
  2. Beth Cudworth, O.D.Howell, MI 488431346345006
  3. Jeremy Dreslinski, O.D.Howell, MI 488431104113208
  4. Donald Greene, O.D.Howell, MI 488431396894572
  5. Leah Hall, ODHowell, MI 488431033783386
  6. Douglas Heinze, O.D.Howell, MI 488431740259258
  7. Joseph Helisek, ODHowell, MI 488431790829257
  8. Erica Lucier, ODHowell, MI 488431023460144

Common questions

What is John William Muir, O.D.'s NPI number?

John William Muir, O.D.'s National Provider Identifier (NPI) is 1639161615, issued on Aug 16, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John William Muir, O.D. located?

The NPPES record lists a practice address at 810 E Grand River Ave, Howell, MI, 48843. Phone: (517) 545-2020. Providers update this record themselves, so call before visiting.

How can I verify John William Muir, O.D.'s license?

NPPES lists Michigan license number 4901003945, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does John William Muir, O.D. prescribe under Medicare Part D?

In 2024, John William Muir, O.D. had 86 Medicare Part D claims for 28 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

What is John William Muir, O.D.'s MIPS final score?

The 2023 MIPS final score is 96.9 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.