Johnny Nguyen, MD
Hospitalist Physician · Folsom, CA
Johnny Nguyen, MD is a hospitalist physician with a practice address in Folsom, California, and NPI 1508442047, issued on Mar 23, 2021. Check the license (California A192186, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Johnny Nguyen
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A192186 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1700 Prairie City RD, Folsom, CA 95630
- Phone
- (916) 351-4800
- Enumerated
- Mar 23, 2021
- Record last updated
- Aug 14, 2024
- Fax
- (916) 351-4899
- Medicare enrollment
- Enrolled (PECOS I20240925001771); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2021
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 1700 Prairie City RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Vaishali Desai, M.D.Hospitalist Physician1588697619
Verify Johnny Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A192186Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average hospitalist physician in 2024
182 Medicare Part D claims for 35 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Levothyroxine Sodium14 claims
- Losartan Potassium13 claims
- Alendronate Sodium11 claims
- Dicyclomine Hcl11 claims
- Myrbetriq11 claims
- Omeprazole11 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.
Industry payments in 2024: $40.99
2 payments; by number, the most common kind was food and beverage; the largest payer was Ucb, Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Dignity Health Medical FoundationGrass Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnny Nguyen among 3,099 hospitalist physician records in California
Johnny Nguyen, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 90% of them.
- NPI issued2021 · 90% of these records are older, 6% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2021 · median 2010 among the 2,505 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 hospitalist physician records list a practice address in Folsom
They are 19 of the 1,811 NPPES records with a practice address in Folsom, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Folsom → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Murali Adusumalli, M.D.Folsom, CA 956301952387953
- Vaishali Desai, M.D.Folsom, CA 956301588697619
- Gurkaran Garcha, M.D.Folsom, CA 956301659667574
- Gagan Garcha, MDFolsom, CA 956301710237821
- Masoud Ghaemmaghami, M.D.Folsom, CA 956301518220656
- Eleonor Griffith, D.O.Folsom, CA 956301306079660
- Rajeswari Jayaraman, MDFolsom, CA 956301154645703
- Kanwaljit Kahlon, M.D.Folsom, CA 956301700980315
Common questions
What is Johnny Nguyen, MD's NPI number?
Johnny Nguyen, MD's National Provider Identifier (NPI) is 1508442047, issued on Mar 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Johnny Nguyen, MD located?
The NPPES record lists a practice address at 1700 Prairie City RD, Folsom, CA, 95630. Phone: (916) 351-4800. Providers update this record themselves, so call before visiting.
How can I verify Johnny Nguyen, MD's license?
NPPES lists California license number A192186, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Johnny Nguyen, MD prescribe under Medicare Part D?
In 2024, Johnny Nguyen, MD had 182 Medicare Part D claims for 35 beneficiaries; the average among hospitalist physician prescribers was 521. 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.