Steven Nguyen, M.D.
Internal Medicine Physician · Saint Louis, MO
Steven Nguyen, M.D. is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1013353663, issued on May 21, 2013. Check the license (Missouri 2017028828, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Steven Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2017028828 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3635 Vista Ave, Saint Louis, MO 63110
- Phone
- (314) 577-8000
- Enumerated
- May 21, 2013
- Record last updated
- Mar 7, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170911002281); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 3635 Vista Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Steven Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2017028828Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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
- Mercy Clinic Adult Hospitalists - St. Louis, LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven Nguyen among 2,604 internal medicine physician records in Missouri
Steven Nguyen, M.D. is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 58% of them.
- NPI issued2013 · 58% of these records are older, 40% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2014 · median 2006 among the 1,443 with a school on file
- Record last updated2019 · 48% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Bartholet, MDSaint Louis, MO 631101750325742
- Rakhee Bhayani, MDSaint Louis, MO 631101477579787
- Mohammed Haque, MDSaint Louis, MO 631101689604100
- Charles Lieu, MDSaint Louis, MO 631101871510396
- Kenneth Ludmerer, MDSaint Louis, MO 631101366468597
- Barbara Lutey, MDSaint Louis, MO 631101306862628
- Heidi Miller, M.D.Saint Louis, MO 631101922082361
- Tracy Norfleet, MDSaint Louis, MO 631101487680377
Common questions
What is Steven Nguyen, M.D.'s NPI number?
Steven Nguyen, M.D.'s National Provider Identifier (NPI) is 1013353663, issued on May 21, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Steven Nguyen, M.D. located?
The NPPES record lists a practice address at 3635 Vista Ave, Saint Louis, MO, 63110. Phone: (314) 577-8000. Providers update this record themselves, so call before visiting.
How can I verify Steven Nguyen, M.D.'s license?
NPPES lists Missouri license number 2017028828, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steven Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Steven Nguyen, M.D. had 11 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.