NPPES file of Aug 9, 2026

John Lamar Thumm, D.D.S.

General Practice Dentistry · Mancelona, MI

John Lamar Thumm, D.D.S. is a general practice dentistry with a practice address in Mancelona, Michigan, and NPI 1194877050, issued on Jan 18, 2007. Check the license (Michigan 9569, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194877050
Name
John Lamar Thumm
Credential
D.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
9569 MI
Self-reported in NPPES; status is on the state search
Practice location
204 W. State St, Mancelona, MI 49659
Phone
(231) 587-9458
Enumerated
Jan 18, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(231) 587-9071
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Verify John Lamar Thumm 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 9569
    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 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

12% fewer Medicare Part D claims than the average general practice dentistry in 2024

73 Medicare Part D claims for 49 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. John Thumm73
  2. Specialty average83

Most prescribed

  1. Amoxicillin64 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.

3 general practice dentistry records list a practice address in Mancelona

They are 3 of the 19 NPPES records with a practice address in Mancelona, and 4,088 general practice dentistry records in Michigan.

Other general practice dentistry records in Michigan

  1. Anthony Abate, DDSSterling Heights, MI1649484593
  2. Antonino Abate, DDSRoyal Oak, MI1982781878
  3. Kathleen Abate, D.D.S.Clinton Township, MI1184838153
  4. Natalie Abbas, DDSDearborn, MI1073181897
  5. Zeinab Abbas, DDSDearborn Heights, MI1063903375
  6. Joseph Abbate, D.D.S., P.C.Detroit, MI1043433105
  7. Taylor Abbott, DMDOxford, MI1053921734
  8. Hassan Abboud, DMDYpsilanti, MI1710834841
  9. Julius Abbu, DMDSouthfield, MI1285287094
  10. Amelia Abdal, DDSFarmington Hills, MI1114610052

Common questions

What is John Lamar Thumm, D.D.S.'s NPI number?

John Lamar Thumm, D.D.S.'s National Provider Identifier (NPI) is 1194877050, issued on Jan 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Lamar Thumm, D.D.S. located?

The NPPES record lists a practice address at 204 W. State St, Mancelona, MI, 49659. Phone: (231) 587-9458. Providers update this record themselves, so call before visiting.

How can I verify John Lamar Thumm, D.D.S.'s license?

NPPES lists Michigan license number 9569, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does John Lamar Thumm, D.D.S. prescribe under Medicare Part D?

In 2024, John Lamar Thumm, D.D.S. had 73 Medicare Part D claims for 49 beneficiaries; the average among general practice dentistry prescribers was 83. 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.