David Frederick Shirley, M.D.
Geriatric Medicine (Family Medicine) Physician · Rocklin, CA
David Frederick Shirley, M.D. is a geriatric medicine (family medicine) physician with a practice address in Rocklin, California, and NPI 1275560484, issued on Jun 26, 2006. Check the license (California G66004, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Frederick Shirley
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- G66004 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3031 Stanford Ranch RD, Rocklin, CA 95765
- Phone
- (916) 677-7962
- Enumerated
- Jun 26, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (916) 435-2964
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 243 in California → Look up another NPI →
Also registered at 3031 Stanford Ranch RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Frederick Shirley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66004Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
45 Medicare Part D claims, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D.
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.
David Frederick Shirley among 243 geriatric medicine (family medicine) physician records in California
David Frederick Shirley, M.D. is one of 243 geriatric medicine (family medicine) physician records with a practice address in California. 76% 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, 53% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2007 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Family Medicine) Physician providers in California
There are 243 geriatric medicine (family medicine) physician records in California.
All 243 in California → Every provider in Rocklin → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Ashkan Javaheri, M.D.Sacramento, CA 958161235328022
- Kurtis Fox, M.D.Colfax, CA 957131396779930
- Lam Van, MDSacramento, CA 958251437272432
- Monica Romo-Contreras, M.D.Sacramento, CA 958381821294117
- Kristine Leenders, FNP-CVacaville, CA 956881487345773
- Michael Richardson, M.D.Vacaville, CA 956871831327899
- Faraz Zaidi, M.D.Carmichael, CA 956081225253099
- Christopher Claydon, M.D.Grass Valley, CA 959451518965235
Common questions
What is David Frederick Shirley, M.D.'s NPI number?
David Frederick Shirley, M.D.'s National Provider Identifier (NPI) is 1275560484, issued on Jun 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Frederick Shirley, M.D. located?
The NPPES record lists a practice address at 3031 Stanford Ranch RD, Rocklin, CA, 95765. Phone: (916) 677-7962. Providers update this record themselves, so call before visiting.
How can I verify David Frederick Shirley, M.D.'s license?
NPPES lists California license number G66004, 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 David Frederick Shirley, M.D. prescribe under Medicare Part D?
In 2024, David Frederick Shirley, M.D. had 45 Medicare Part D claims; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.