Alan Gruenefeldt, MD
Family Medicine Physician · Auburn, CA
Alan Gruenefeldt, MD is a family medicine physician with a practice address in Auburn, California, and NPI 1780795930, issued on Aug 31, 2006. Check the license (California G69052, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alan Gruenefeldt
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G69052 CA
Self-reported in NPPES; status is on the state search - Practice location
- 404 Auburn Folsom RD, Auburn, CA 95603
- Phone
- (530) 885-6221
- Enumerated
- Aug 31, 2006
- Entity
- Type 1 · individual
Also registered at 404 Auburn Folsom RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Ashley, MDNeurology Physician1508443094
- Susan McComas, NPFamily Nurse Practitioner1467626663
Verify Alan Gruenefeldt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
About as many Medicare Part D claims as the average family medicine physician in 2024
3,531 Medicare Part D claims for 590 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 194 claims were for opioids.
Most prescribed
- Atorvastatin Calcium192 claims
- Losartan Potassium162 claims
- Levothyroxine Sodium139 claims
- Sertraline Hcl132 claims
- Gabapentin118 claims
- Amlodipine Besylate109 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.
One hospital or facility affiliation
- Western Sierra Medical Clinic IncAuburn, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
42 family medicine physician records list a Auburn practice address
They are 42 of the 1,392 NPPES records with a Auburn practice address, and 16,272 family medicine physician records in California.
All 42 in Auburn → All 16,272 in California → Every provider in Auburn →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Alan Gruenefeldt, MD's NPI number?
Alan Gruenefeldt, MD's National Provider Identifier (NPI) is 1780795930, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan Gruenefeldt, MD located?
The NPPES record lists a practice address at 404 Auburn Folsom RD, Auburn, CA, 95603. Phone: (530) 885-6221. Providers update this record themselves, so call before visiting.
How can I verify Alan Gruenefeldt, MD's license?
NPPES lists California license number G69052, 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 Alan Gruenefeldt, MD prescribe under Medicare Part D?
In 2024, Alan Gruenefeldt, MD had 3,531 Medicare Part D claims for 590 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.
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.