William R. Griffitts, MD
Hospitalist Physician · Auburn, CA
William R. Griffitts, MD is a hospitalist physician with a practice address in Auburn, California, and NPI 1811008063, issued on Aug 31, 2006. Check the license (California 20A7885, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William R. Griffitts
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A7885 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11815 Education St, Auburn, CA 95602
- Phone
- (530) 887-6978
- Enumerated
- Aug 31, 2006
- Record last updated
- May 15, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (530) 889-6035
- Medicaid ID
- 00AX78850 CA
- Medicare enrollment
- Enrolled (PECOS I20081212000712); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 11815 Education St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William R. Griffitts in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average hospitalist physician in 2024
320 Medicare Part D claims for 153 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 19 claims were for opioids.
Most prescribed
- Cefdinir28 claims
- Prednisone23 claims
- Cefuroxime14 claims
- Azithromycin12 claims
- Ondansetron Odt12 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
- Sutter Valley Medical FoundationSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William R. Griffitts among 3,099 hospitalist physician records in California
William R. Griffitts, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2000 · median 2010 among the 2,505 with a school on file
- Record last updated2015 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Auburn → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Joshua Crose, DOAuburn, CA 956021457677825
- Michelle Fanoni, DOAuburn, CA 956021790314961
- Joshua Hantman, M.D.Auburn, CA 956021346351574
- Lauren Holland, DOAuburn, CA 956021508485046
- Anna Lidofsky, MDAuburn, CA 956021063049740
- Khurram Ali, M.D.Carmichael, CA 956081760589790
- Dakane Billow, M.D.Carmichael, CA 956081063513604
- Gabriel Galofre, M.D.Carmichael, CA 956081659472298
Common questions
What is William R. Griffitts, MD's NPI number?
William R. Griffitts, MD's National Provider Identifier (NPI) is 1811008063, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William R. Griffitts, MD located?
The NPPES record lists a practice address at 11815 Education St, Auburn, CA, 95602. Phone: (530) 887-6978. Providers update this record themselves, so call before visiting.
How can I verify William R. Griffitts, MD's license?
NPPES lists California license number 20A7885, 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 William R. Griffitts, MD prescribe under Medicare Part D?
In 2024, William R. Griffitts, MD had 320 Medicare Part D claims for 153 beneficiaries; the average among hospitalist physician prescribers was 521. 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.