NPPES file of Aug 9, 2026

Denise Ann-Marie John, M.D.

Ophthalmology Physician · Ann Arbor, MI

Denise Ann-Marie John, M.D. is an ophthalmology physician with a practice address in Ann Arbor, Michigan, and NPI 1033232319, issued on Apr 9, 2007. Check the license (Michigan 4301089592, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033232319
Name
Denise Ann-Marie John
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
4301089592 MI
Self-reported in NPPES; status is on the state search
Practice location
1000 Wall Street, Ann Arbor, MI 48105
Phone
(734) 764-4190
Enumerated
Apr 9, 2007
Record last updated
Mar 16, 2026
Medicare enrollment
Enrolled (PECOS I20071018000620); 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.
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Also registered at 1000 Wall Street

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

  1. Steven Archer, MDOphthalmology Physician1801804596
  2. Nicholas Behunin, M.D.Ophthalmology Physician1235575242
  3. Jill Bixler, MDOphthalmology Physician1003921354
  4. Karen Deloss, O.D.Optometrist1750533352
  5. Lindsey Delott, M.D.Neurology Physician1629278742
  6. Susan Elner, MDOphthalmology Physician1780694315

Verify Denise Ann-Marie John 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 4301089592
    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.

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41% fewer Medicare Part D claims than the average ophthalmology physician in 2024

898 Medicare Part D claims for 249 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.

  1. Denise John898
  2. Specialty average1,518

Most prescribed

  1. Latanoprost190 claims
  2. Dorzolamide-Timolol180 claims
  3. Brimonidine Tartrate103 claims
  4. Timolol Maleate75 claims
  5. Dorzolamide Hcl54 claims
  6. Prednisolone Acetate50 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.

Bills Medicare through one group practice

  1. Regents OF The University OF MichiganAnn Arbor, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Denise Ann-Marie John among 791 ophthalmology physician records in Michigan

Denise Ann-Marie John, M.D. is one of 791 ophthalmology physician records with a practice address in Michigan. 80% 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 54% of them.

  • NPI issued2007 · 54% of these records are older, 38% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2003 · median 2002 among the 548 with a school on file
  • Record last updated2026 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Ophthalmology Physician providers in Michigan

There are 791 ophthalmology physician records in Michigan.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Steven Archer, MDAnn Arbor, MI 481051801804596
  2. Grant Comer, MDAnn Arbor, MI 481051356359079
  3. Thomas Gardner, MDAnn Arbor, MI 481051528022464
  4. John Heckenlively, MDAnn Arbor, MI 481051801818901
  5. James Knaggs, MDAnn Arbor, MI 481051851309546
  6. Paul Lichter, MDAnn Arbor, MI 481051184632895
  7. Edward Margolin, MDAnn Arbor, MI 481051306867791
  8. Christine Nelson, MDAnn Arbor, MI 481051578571261

Common questions

What is Denise Ann-Marie John, M.D.'s NPI number?

Denise Ann-Marie John, M.D.'s National Provider Identifier (NPI) is 1033232319, issued on Apr 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Denise Ann-Marie John, M.D. located?

The NPPES record lists a practice address at 1000 Wall Street, Ann Arbor, MI, 48105. Phone: (734) 764-4190. Providers update this record themselves, so call before visiting.

How can I verify Denise Ann-Marie John, M.D.'s license?

NPPES lists Michigan license number 4301089592, 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 Denise Ann-Marie John, M.D. prescribe under Medicare Part D?

In 2024, Denise Ann-Marie John, M.D. had 898 Medicare Part D claims for 249 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

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.