NPPES file of Aug 9, 2026

Thomas Tam Klumpner, M.D.

Anesthesiology Physician · Ann Arbor, MI

Thomas Tam Klumpner, M.D. is an anesthesiology physician with a practice address in Ann Arbor, Michigan, and NPI 1992026199, issued on Jun 22, 2010. Check the license (Michigan 4301106821, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1992026199
Name
Thomas Tam Klumpner
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
4301106821 MI
125058826 IL
Self-reported in NPPES; status is on the state search
Practice location
1500 E Medical Center Drive, Ann Arbor, MI 48109
Phone
(734) 936-4280
Enumerated
Jun 22, 2010
Record last updated
Jun 24, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20150803001882); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2010
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 1500 E Medical Center Drive

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

  1. Ghada Abusin, M.D.Pediatric Hematology & Oncology Physician1992981435
  2. Andrew Adan, M.D.Emergency Medicine Physician1922488196
  3. Crystal Addison, PAPhysician Assistant1235689100
  4. Mahamud Ahmed, MDStudent in an Organized Health Care Education/Training Program1922743004
  5. Alaa Al Habbal, DOStudent in an Organized Health Care Education/Training Program1992493704
  6. Caleb Allred, MDStudent in an Organized Health Care Education/Training Program1982491122

Verify Thomas Tam Klumpner 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 4301106821
    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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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).

Thomas Tam Klumpner among 1,720 anesthesiology physician records in Michigan

Thomas Tam Klumpner, M.D. is one of 1,720 anesthesiology physician records with a practice address in Michigan. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.

  • NPI issued2010 · 63% of these records are older, 33% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2010 · median 2006 among the 1,126 with a school on file
  • Record last updated2015 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

395 anesthesiology physician records list a practice address in Ann Arbor

They are 395 of the 15,616 NPPES records with a practice address in Ann Arbor, and 1,720 anesthesiology physician records in Michigan.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Prabhakara Basavaraju, MDAnn Arbor, MI 481091245256809
  2. Robert Bettendorf, M.D.Ann Arbor, MI 481091043290786
  3. Milo Engoren, MDAnn Arbor, MI 481091306845144
  4. Shobha Malviya, MDAnn Arbor, MI 481091275559882
  5. George Mashour, MDAnn Arbor, MI 481091184690349
  6. Marykutty Mathai, MDAnn Arbor, MI 481091912923525
  7. Laurel Moore, M.D.Ann Arbor, MI 481091225081979
  8. Meenakshi Moorthy, MDAnn Arbor, MI 481091790701316

Common questions

What is Thomas Tam Klumpner, M.D.'s NPI number?

Thomas Tam Klumpner, M.D.'s National Provider Identifier (NPI) is 1992026199, issued on Jun 22, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Tam Klumpner, M.D. located?

The NPPES record lists a practice address at 1500 E Medical Center Drive, Ann Arbor, MI, 48109. Phone: (734) 936-4280. Providers update this record themselves, so call before visiting.

How can I verify Thomas Tam Klumpner, M.D.'s license?

NPPES lists Michigan license number 4301106821, 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.

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.