Michael Andya, M.D.
NPI 1760428452 · Internal Medicine Physician · Grass Valley, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Andya, M.D. is a Internal Medicine Physician provider in Grass Valley, CA (NPI 1760428452).
Provider details
- NPI number
- 1760428452
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G69223 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,244 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 854 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 729 | $95 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 397 | $136 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 286 | $65 |
| Administration of Influenza Virus VaccineG0008 | 270 | $33 |
| Annual Depression Screening, 5 to 15 MinutesG0444 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 95 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 379 | 114 |
| Losartan Potassium | 285 | 80 |
| Levothyroxine Sodium | 224 | 61 |
| Amlodipine Besylate | 220 | 60 |
| Tamsulosin Hcl | 191 | 54 |
| Escitalopram Oxalate | 189 | 52 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2026-05-28
- Certified
- 2026-05-28
Frequently asked questions
- What is Michael Andya's NPI number?
- Michael Andya's National Provider Identifier (NPI) is 1760428452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Andya's specialty?
- Michael Andya is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Andya located?
- Michael Andya's practice location on file with NPPES is 402 S Auburn St, Grass Valley, CA 95945-7226.
- What is Michael Andya's phone number?
- The practice phone number listed in the NPPES registry for Michael Andya is (530) 273-2221.
- Does Michael Andya accept Medicare?
- Michael Andya is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Andya's NPI active?
- Yes — Michael Andya's NPI (1760428452) is active in the NPPES registry as of the last update on 2026-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.