Johnathan Nguyen, MD
Internal Medicine Physician · Kalamazoo, MI
Johnathan Nguyen, MD is an internal medicine physician with a practice address in Kalamazoo, Michigan, and NPI 1720281454, issued on Jun 8, 2007. Check the license (Michigan 4301083524, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Johnathan Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 4301083524 MI
MD60034280 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Oakland Dr, Kalamazoo, MI 49008
- Phone
- (269) 337-4400
- Enumerated
- Jun 8, 2007
- Record last updated
- Jun 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20080911000508); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2003
- 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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- Syed Muhammad Abbas, MDStudent in an Organized Health Care Education/Training Program1093697260
- Saja AbdelhadiStudent in an Organized Health Care Education/Training Program1003654070
- Peter Abdou, MEDICAL STUDENT (MD)Student in an Organized Health Care Education/Training Program1578243721
- Ramsha Abdul Qadir, MDStudent in an Organized Health Care Education/Training Program1972493583
- Melinda Abernethy, M.D.Reproductive Endocrinology Physician1427254226
Verify Johnathan Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301083524Check 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
46 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.
Bills Medicare through one group practice
- South Sound Inpatient Physicians PLLCBellingham, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnathan Nguyen among 5,735 internal medicine physician records in Michigan
Johnathan Nguyen, MD 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 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2003 · median 2006 among the 3,564 with a school on file
- Record last updated2023 · 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
- Joanne Baker, DOKalamazoo, MI 490081851338610
- Susan Bannon, MDKalamazoo, MI 490081356310411
- Joseph D'Ambrosio, M.D.Kalamazoo, MI 490081790754315
- 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 Johnathan Nguyen, MD's NPI number?
Johnathan Nguyen, MD's National Provider Identifier (NPI) is 1720281454, issued on Jun 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Johnathan Nguyen, MD located?
The NPPES record lists a practice address at 1000 Oakland Dr, Kalamazoo, MI, 49008. Phone: (269) 337-4400. Providers update this record themselves, so call before visiting.
How can I verify Johnathan Nguyen, MD's license?
NPPES lists Michigan license number 4301083524, 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 Johnathan Nguyen, MD prescribe under Medicare Part D?
In 2024, Johnathan Nguyen, MD had 46 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.