Michael D. Andya, M.D.
Internal Medicine Physician · Grass Valley, CA
Michael D. Andya, M.D. is an internal medicine physician with a practice address in Grass Valley, California, and NPI 1760428452, issued on Jun 21, 2006. Check the license (California G69223, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael D. Andya
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G69223 CA
Self-reported in NPPES; status is on the state search - Practice location
- 402 S Auburn St, Grass Valley, CA 95945
- Phone
- (530) 273-2221
- Enumerated
- Jun 21, 2006
- Record last updated
- May 28, 2026
- Fax
- (530) 273-3550
- Medicare enrollment
- Enrolled (PECOS I20041116000489); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 402 S Auburn St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jade Levonian, LACAcupuncturist1770344988
- Pa Soua Xiong, M.D.Family Medicine Physician1386015220
Verify Michael D. Andya in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% more Medicare Part D claims than the average internal medicine physician in 2024
6,048 Medicare Part D claims for 439 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 236 claims were for opioids.
Most prescribed
- Atorvastatin Calcium379 claims
- Losartan Potassium285 claims
- Levothyroxine Sodium224 claims
- Amlodipine Besylate220 claims
- Tamsulosin Hcl191 claims
- Escitalopram Oxalate189 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.
The MIPS final score for 2023 (Medicare payment program): 85.9 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).
Michael D. Andya among 17,696 internal medicine physician records in California
Michael D. Andya, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1989 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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
- Nancy Bleile, MDGrass Valley, CA 959451144246158
- Nicholas Browning, M.D.Grass Valley, CA 959451487610309
- Stuart Campbell, M.D.Grass Valley, CA 959451306842588
- Simon Chan, M.D.Grass Valley, CA 959451063431179
- Sherilynn Cooke, MDGrass Valley, CA 959451427136506
- Fouzia Godil, M.D.Grass Valley, CA 959451942268792
- Eric Holtrop, M.D.Grass Valley, CA 959451881790459
- Andrew Ing, MDGrass Valley, CA 959451053409714
Common questions
What is Michael D. Andya, M.D.'s NPI number?
Michael D. Andya, M.D.'s National Provider Identifier (NPI) is 1760428452, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael D. Andya, M.D. located?
The NPPES record lists a practice address at 402 S Auburn St, Grass Valley, CA, 95945. Phone: (530) 273-2221. Providers update this record themselves, so call before visiting.
How can I verify Michael D. Andya, M.D.'s license?
NPPES lists California license number G69223, 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 Michael D. Andya, M.D. prescribe under Medicare Part D?
In 2024, Michael D. Andya, M.D. had 6,048 Medicare Part D claims for 439 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Michael D. Andya, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.9 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.