NPPES file of Aug 9, 2026

Michael A. Mahr, M.D.

Ophthalmology Physician · Rochester, MN

Michael A. Mahr, M.D. is an ophthalmology physician with a practice address in Rochester, Minnesota, and NPI 1225016959, issued on Jan 3, 2006. Check the license (Minnesota 39825, as entered in NPPES) on the Minnesota Board of Medical Practice; 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
1225016959
Name
Michael A. Mahr
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
39825 MN
MD-43037 IA
Self-reported in NPPES; status is on the state search
Practice location
200 1St St SW, Rochester, MN 55905
Phone
(507) 284-2511
Enumerated
Jan 3, 2006
Record last updated
Aug 18, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20100107000344); accepts Medicare assignment
Medical or professional school
Washington University School Of Medicine, 1996
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 200 1St St SW

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

  1. Timothy Aadland, M.D.Diagnostic Radiology Physician1780662783
  2. Christopher Aakre, MDInternal Medicine Physician1508151663
  3. Kathryn Aaro, P.T.Physical Therapist1619360666
  4. Danielle Aase, MDReproductive Endocrinology Physician1316524135
  5. Uzoamaka Abajue, PHARMDPharmacist1982335295
  6. Francisco Abarca Rendon, MDIndependent Medical Examiner Physician1790096246

Verify Michael A. Mahr in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 39825
    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 Minnesota license search

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

890 Medicare Part D claims for 287 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 81% of claims.

  1. Michael Mahr890
  2. Specialty average1,518

Most prescribed

  1. Ketorolac Tromethamine447 claims
  2. Prednisolone Acetate377 claims
  3. Latanoprost19 claims
  4. Diclofenac Sodium17 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. Mayo ClinicRochester, MN

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

Michael A. Mahr among 434 ophthalmology physician records in Minnesota

Michael A. Mahr, M.D. is one of 434 ophthalmology physician records with a practice address in Minnesota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 44% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated1996 · median 2006 among the 282 with a school on file
  • Record last updated2020 · 58% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Ophthalmology Physician providers in Minnesota

There are 434 ophthalmology physician records in Minnesota.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. George Bartley, M.D.Rochester, MN 559051184614000
  2. Erick Bothun, MDRochester, MN 559051134106339
  3. Maryanna Destro, M.D.Rochester, MN 559051578547386
  4. James Garrity, M.D.Rochester, MN 559051497734958
  5. Paul Hardwig, M.D.Rochester, MN 559051578549358
  6. George Hohberger, M.D.Rochester, MN 559051811975154
  7. Sunil Khanna, M.D.Rochester, MN 559051033195797
  8. Cheryl Khanna, M.D.Rochester, MN 559051982680401

Common questions

What is Michael A. Mahr, M.D.'s NPI number?

Michael A. Mahr, M.D.'s National Provider Identifier (NPI) is 1225016959, issued on Jan 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael A. Mahr, M.D. located?

The NPPES record lists a practice address at 200 1St St SW, Rochester, MN, 55905. Phone: (507) 284-2511. Providers update this record themselves, so call before visiting.

How can I verify Michael A. Mahr, M.D.'s license?

NPPES lists Minnesota license number 39825, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Michael A. Mahr, M.D. prescribe under Medicare Part D?

In 2024, Michael A. Mahr, M.D. had 890 Medicare Part D claims for 287 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.