Michael Andya, M.D.
Internal Medicine Physician · Grass Valley, CA
Michael 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 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
- Entity
- Type 1 · individual
Also registered at 402 S Auburn St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael 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
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,048 Medicare Part D claims for 439 beneficiaries, against an average of 2,785 among the 127,794 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 Medicare quality score for 2023: 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).
23 internal medicine physician records list a Grass Valley practice address
They are 23 of the 1,540 NPPES records with a Grass Valley practice address, and 20,403 internal medicine physician records in California.
All 23 in Grass Valley → All 20,403 in California → Every provider in Grass Valley →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Michael Andya, M.D.'s NPI number?
Michael 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 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 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 Andya, M.D. prescribe under Medicare Part D?
In 2024, Michael Andya, M.D. had 6,048 Medicare Part D claims for 439 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Michael Andya, M.D.'s Medicare quality 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.