John Nguyen Winn, M.D.
Diagnostic Radiology Physician · Carmichael, CA
John Nguyen Winn, M.D. is a diagnostic radiology physician with a practice address in Carmichael, California, and NPI 1871795500, issued on Jun 4, 2007. Check the license (California A99180, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Nguyen Winn
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A99180 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6305 Coyle Ave, Carmichael, CA 95608
- Phone
- (916) 961-6120
- Enumerated
- Jun 4, 2007
- Record last updated
- Apr 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (916) 408-8000
- Medicare enrollment
- Enrolled (PECOS I20070815000741); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 6305 Coyle Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amardeep Bhatia, M.D.Diagnostic Radiology Physician1083641542
- Paul Brown, M.D.Vascular & Interventional Radiology Physician1508892621
- William Cragun, D.O.Diagnostic Radiology Physician1063709939
- Qurieno Deguchy, MDVascular & Interventional Radiology Physician1053754671
- Tuan Ha, M.D.Diagnostic Radiology Physician1285673699
Verify John Nguyen Winn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99180Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
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).
John Nguyen Winn among 4,500 diagnostic radiology physician records in California
John Nguyen Winn, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% 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 48% of them.
- NPI issued2007 · 48% of these records are older, 41% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2000 · median 2004 among the 3,130 with a school on file
- Record last updated2020 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 diagnostic radiology physician records list a practice address in Carmichael
They are 22 of the 1,440 NPPES records with a practice address in Carmichael, and 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Carmichael → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Robert Bemrick, M.D.Carmichael, CA 956081003843558
- Amardeep Bhatia, M.D.Carmichael, CA 956081083641542
- Tuan Ha, M.D.Carmichael, CA 956081285673699
- George Lai, DOCarmichael, CA 956081285708883
- Timothy Lee, MDCarmichael, CA 956081790728020
- Franklin Li, M.D.Carmichael, CA 956081447288725
- George Luh, M.D.Carmichael, CA 956081740213214
- Brian Marten, M.D.Carmichael, CA 956081821029216
Common questions
What is John Nguyen Winn, M.D.'s NPI number?
John Nguyen Winn, M.D.'s National Provider Identifier (NPI) is 1871795500, issued on Jun 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Nguyen Winn, M.D. located?
The NPPES record lists a practice address at 6305 Coyle Ave, Carmichael, CA, 95608. Phone: (916) 961-6120. Providers update this record themselves, so call before visiting.
How can I verify John Nguyen Winn, M.D.'s license?
NPPES lists California license number A99180, 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.
What is John Nguyen Winn, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.