Thomas Austin Melgar, M.D.
Internal Medicine Physician · Kalamazoo, MI
Thomas Austin Melgar, M.D. is an internal medicine physician with a practice address in Kalamazoo, Michigan, and NPI 1154390334, issued on Mar 17, 2006. Check the license (Michigan 430152330, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Thomas Austin Melgar
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 430152330 MI
4301052330 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Oakland Dr, Kalamazoo, MI 49008
- Phone
- (269) 337-6345
- Enumerated
- Mar 17, 2006
- Record last updated
- May 24, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 4195302 MI
- Medicare enrollment
- Enrolled (PECOS I20100520000213); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1000 Oakland Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas Austin Melgar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 430152330Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
18 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Western Michigan University School OF MedicineKalamazoo, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Austin Melgar among 5,735 internal medicine physician records in Michigan
Thomas Austin Melgar, M.D. is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% 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, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1987 · median 2006 among the 3,564 with a school on file
- Record last updated2012 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
158 internal medicine physician records list a practice address in Kalamazoo
They are 158 of the 6,553 NPPES records with a practice address in Kalamazoo, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Kalamazoo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- David Doan, M.D.Kalamazoo, MI 490081790728772
- Ross Driscoll, M.D.Kalamazoo, MI 490081427027424
- Jonathan Epstein, MDKalamazoo, MI 490081144249426
- Kevin Kavanaugh, M.D.Kalamazoo, MI 490081841269198
- Philip Kroth, MDKalamazoo, MI 490081649285107
Common questions
What is Thomas Austin Melgar, M.D.'s NPI number?
Thomas Austin Melgar, M.D.'s National Provider Identifier (NPI) is 1154390334, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Austin Melgar, M.D. located?
The NPPES record lists a practice address at 1000 Oakland Dr, Kalamazoo, MI, 49008. Phone: (269) 337-6345. Providers update this record themselves, so call before visiting.
How can I verify Thomas Austin Melgar, M.D.'s license?
NPPES lists Michigan license number 430152330, 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.
How much does Thomas Austin Melgar, M.D. prescribe under Medicare Part D?
In 2024, Thomas Austin Melgar, M.D. had 18 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thomas Austin Melgar, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.