NPPES file of Aug 9, 2026

Joseph Michael Thallemer, O.D.

Optometrist · Warsaw, IN

Joseph Michael Thallemer, O.D. is an optometrist with a practice address in Warsaw, Indiana, and NPI 1578595336, issued on Jul 6, 2006. Check the license (Indiana 18001892A, as entered in NPPES) with the Indiana 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
1578595336
Name
Joseph Michael Thallemer
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
18001892A IN
Self-reported in NPPES; status is on the state search
Practice location
3301 E Center Street Ext, Warsaw, IN 46582
Phone
(574) 269-3828
Enumerated
Jul 6, 2006
Record last updated
Oct 15, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(574) 269-3848
Medicaid ID
100157080A IN
Medicare enrollment
Enrolled (PECOS I20040902000007); accepts Medicare assignment
Medical or professional school
University Of Missouri St Louis - School Of Optometry, 1979
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 3301 E Center Street Ext

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

  1. Rachel Johnson, O.D.Optometrist1972528123
  2. Mitchell Reinholt, ODOptometrist1558700690

Verify Joseph Michael Thallemer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Indiana board licenses this profession
    Search for license 18001892A
    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 Indiana 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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53% fewer Medicare Part D claims than the average optometrist in 2024

131 Medicare Part D claims for 27 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.

  1. Joseph Thallemer131
  2. Specialty average277

Most prescribed

  1. Latanoprost43 claims
  2. Lumigan13 claims
  3. Timolol Maleate13 claims
  4. Dorzolamide-Timolol12 claims
  5. Rocklatan11 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. Mitchell Reinholt OD LLCWarsaw, IN

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

Joseph Michael Thallemer among 1,578 optometrist records in Indiana

Joseph Michael Thallemer, O.D. is one of 1,578 optometrist records with a practice address in Indiana. 73% 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 15% of them.

  • NPI issued2006 · 15% of these records are older, 53% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1979 · median 2008 among the 1,014 with a school on file
  • Record last updated2009 · 66% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

14 optometrist records list a practice address in Warsaw

They are 14 of the 607 NPPES records with a practice address in Warsaw, and 1,578 optometrist records in Indiana.

The 8 optometrist records with the nearest ZIP codes

  1. Scott Caughell, O.D.Warsaw, IN 465821982634606
  2. Rachel Johnson, O.D.Warsaw, IN 465821972528123
  3. Jacob Kydd, ODWarsaw, IN 465821841124872
  4. Mitchell Reinholt, ODWarsaw, IN 465821558700690
  5. Taylor Spangle, ODWarsaw, IN 465821740858406
  6. Rebekah Todd, O.D.Warsaw, IN 465821235161035
  7. Charles Cole, ODWarsaw, IN 465801962440792
  8. Kevin Hickman, O.D.Warsaw, IN 465801609879030

Common questions

What is Joseph Michael Thallemer, O.D.'s NPI number?

Joseph Michael Thallemer, O.D.'s National Provider Identifier (NPI) is 1578595336, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joseph Michael Thallemer, O.D. located?

The NPPES record lists a practice address at 3301 E Center Street Ext, Warsaw, IN, 46582. Phone: (574) 269-3828. Providers update this record themselves, so call before visiting.

How can I verify Joseph Michael Thallemer, O.D.'s license?

NPPES lists Indiana license number 18001892A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.

How much does Joseph Michael Thallemer, O.D. prescribe under Medicare Part D?

In 2024, Joseph Michael Thallemer, O.D. had 131 Medicare Part D claims for 27 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.