NPPES file of Aug 9, 2026

William John Hartman, OD

Optometrist · Wadena, MN

William John Hartman, OD is an optometrist with a practice address in Wadena, Minnesota, and NPI 1639183734, issued on Jul 27, 2006. Check the license (Minnesota 2355, as entered in NPPES) with the Minnesota 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639183734
Name
William John Hartman
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License number
2355 MN
Self-reported in NPPES; status is on the state search
Practice location
315 Jefferson St S, Wadena, MN 56482
Phone
(218) 631-1456
Enumerated
Jul 27, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(218) 631-3213
Medicaid ID
171525900 MN
Medicare enrollment
Enrolled (PECOS I20040708000647); accepts Medicare assignment
Medical or professional school
Pacific University - College Of Optometry, 1991
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

Verify William John Hartman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
    Search for license 2355
    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
Find the Minnesota 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.

59% more Medicare Part D claims than the average optometrist in 2024

441 Medicare Part D claims for 96 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. William Hartman441
  2. Specialty average277

Most prescribed

  1. Latanoprost254 claims
  2. Timolol Maleate46 claims
  3. Brimonidine Tartrate32 claims
  4. Travoprost24 claims
  5. Dorzolamide Hcl18 claims
  6. Dorzolamide-Timolol18 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. Minnesota Eyecare Network, Inc.Long Prairie, MN

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

William John Hartman among 1,142 optometrist records in Minnesota

William John Hartman, OD is one of 1,142 optometrist records with a practice address in Minnesota. 74% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 52% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1991 · median 2008 among the 778 with a school on file
  • Record last updated2007 · 65% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 optometrist records list a practice address in Wadena

They are 5 of the 185 NPPES records with a practice address in Wadena, and 1,142 optometrist records in Minnesota.

The 8 optometrist records with the nearest ZIP codes

  1. Zachary Lundgren, ODWadena, MN 564821013370535
  2. Elizabeth Marshall, ODWadena, MN 564821992321335
  3. Joseph Miller, ODWadena, MN 564821699868430
  4. Corey Tabbert, ODWadena, MN 564821902874480
  5. Seth Dokken, O.D.Staples, MN 564791679734636
  6. Jesse Fenstermacher, ODStaples, MN 564791194339481
  7. Michael Marvin, O.D.Pine River, MN 564741396710125
  8. Wallace Johnson, O.D.Pillager, MN 564731346209020

Common questions

What is William John Hartman, OD's NPI number?

William John Hartman, OD's National Provider Identifier (NPI) is 1639183734, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William John Hartman, OD located?

The NPPES record lists a practice address at 315 Jefferson St S, Wadena, MN, 56482. Phone: (218) 631-1456. Providers update this record themselves, so call before visiting.

How can I verify William John Hartman, OD's license?

NPPES lists Minnesota license number 2355, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.

How much does William John Hartman, OD prescribe under Medicare Part D?

In 2024, William John Hartman, OD had 441 Medicare Part D claims for 96 beneficiaries; the average among optometrist prescribers was 277. 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.