Alan F. Gruenefeldt, MD
Family Medicine Physician · Auburn, CA
Alan F. 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 F. 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
- Record last updated
- Oct 4, 2023
- Fax
- (530) 885-9403
- Medicaid ID
- 00G690520 CA
- Medicare enrollment
- Enrolled (PECOS I20040225000343); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 404 Auburn Folsom RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan McComas, NPFamily Nurse Practitioner1467626663
Verify Alan F. 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 3,544 among the 117,163 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.
Bills Medicare through one group practice
- Western Sierra Medical Clinic IncAuburn, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alan F. Gruenefeldt among 17,133 family medicine physician records in California
Alan F. Gruenefeldt, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1989 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
45 family medicine physician records list a practice address in Auburn
They are 45 of the 1,392 NPPES records with a practice address in Auburn, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Auburn → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joseph Cerny, MDAuburn, CA 956031740372796
- Jennifer Clothier, MDAuburn, CA 956031245333442
- Michael Hooper, M.D.Auburn, CA 956031447236096
- Mark Knoble, M.D.Auburn, CA 956031174617799
- Francesca Lane, D.O.Auburn, CA 956031104806330
- Gerry Lee, MDAuburn, CA 956031740373356
- Patrick Ogilvie, MDAuburn, CA 956031821099003
- Alexander Ruchenkov, M.D.Auburn, CA 956031689785834
Common questions
What is Alan F. Gruenefeldt, MD's NPI number?
Alan F. 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 F. 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 F. 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 F. Gruenefeldt, MD prescribe under Medicare Part D?
In 2024, Alan F. Gruenefeldt, MD had 3,531 Medicare Part D claims for 590 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.