Michelle-Linh Nguyen, MD
Internal Medicine Physician · Grass Valley, CA
Michelle-Linh Nguyen, MD is an internal medicine physician with a practice address in Grass Valley, California, and NPI 1114447596, issued on Jun 26, 2017. Check the license (California A169414, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michelle-Linh Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A169414 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 W. Mcknight Way Ste B, Grass Valley, CA 95949
- Phone
- (530) 552-1039
- Enumerated
- Jun 26, 2017
- Record last updated
- Jul 9, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Michelle-Linh Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A169414Check 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
22 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.
Michelle-Linh Nguyen among 17,696 internal medicine physician records in California
Michelle-Linh Nguyen, MD is one of 17,696 internal medicine physician records with a practice address in California. 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2025 · 61% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 internal medicine physician records list a practice address in Grass Valley
They are 22 of the 1,540 NPPES records with a practice address in Grass Valley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Grass Valley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Walter Miller, MDGrass Valley, CA 959491013985340
- Satvir Dhillon, MDGridley, CA 959481326544586
- Ramon Perez-Egana Monge, M.D.Gridley, CA 959481720297906
- Nikom Udomphonkul, MDGridley, CA 959481598849192
- Elisabeth Lernhardt, MDPenn Valley, CA 959461902879885
- Elizabeth Wobus, MDPenn Valley, CA 959461770673493
- Sherilynn Cooke, MDGrass Valley, CA 959451427136506
- Charles Garretson, MDLive Oak, CA 959531144284373
Common questions
What is Michelle-Linh Nguyen, MD's NPI number?
Michelle-Linh Nguyen, MD's National Provider Identifier (NPI) is 1114447596, issued on Jun 26, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Michelle-Linh Nguyen, MD located?
The NPPES record lists a practice address at 101 W. Mcknight Way Ste B, Grass Valley, CA, 95949. Phone: (530) 552-1039. Providers update this record themselves, so call before visiting.
How can I verify Michelle-Linh Nguyen, MD's license?
NPPES lists California license number A169414, 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 Michelle-Linh Nguyen, MD prescribe under Medicare Part D?
In 2024, Michelle-Linh Nguyen, MD had 22 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.