Christopher Charles Claydon, M.D.
Geriatric Medicine (Family Medicine) Physician · Grass Valley, CA
Christopher Charles Claydon, M.D. is a geriatric medicine (family medicine) physician with a practice address in Grass Valley, California, and NPI 1518965235, issued on Jul 7, 2005. Check the license (California A32908, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Charles Claydon
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- A32908 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Catherine LN, Grass Valley, CA 95945
- Phone
- (530) 271-2100
- Enumerated
- Jul 7, 2005
- Record last updated
- May 1, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (530) 271-2200
- Medicaid ID
- 00A3290800 CA
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 243 in California → Look up another NPI →
Also registered at 150 Catherine LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Simon Chan, M.D.Internal Medicine Physician1063431179
- Susan Claydon, N.P.Family Nurse Practitioner1336147057
- Ruth Cutter, N.P.Family Nurse Practitioner1033232012
- Gwendolyn Eymann, RN-NPCommunity Health Nurse Practitioner1730392184
- Daniel Greenberg, LACAcupuncturist1861868226
- Nelson Maldonado, M.D.Surgery Physician1508921305
Verify Christopher Charles Claydon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A32908Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
387 Medicare Part D claims for 45 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Levothyroxine Sodium51 claims
- Eliquis26 claims
- Latanoprost25 claims
- Finasteride23 claims
- Atorvastatin Calcium17 claims
- Clopidogrel14 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.
Christopher Charles Claydon among 243 geriatric medicine (family medicine) physician records in California
Christopher Charles Claydon, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2012 · 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 Grass Valley → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Monica Romo-Contreras, M.D.Sacramento, CA 958381821294117
- Lam Van, MDSacramento, CA 958251437272432
- Ashkan Javaheri, M.D.Sacramento, CA 958161235328022
- David Shirley, M.D.Rocklin, CA 957651275560484
- Kurtis Fox, M.D.Colfax, CA 957131396779930
- Kristine Leenders, FNP-CVacaville, CA 956881487345773
- Michael Richardson, M.D.Vacaville, CA 956871831327899
- Faraz Zaidi, M.D.Carmichael, CA 956081225253099
Common questions
What is Christopher Charles Claydon, M.D.'s NPI number?
Christopher Charles Claydon, M.D.'s National Provider Identifier (NPI) is 1518965235, issued on Jul 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Charles Claydon, M.D. located?
The NPPES record lists a practice address at 150 Catherine LN, Grass Valley, CA, 95945. Phone: (530) 271-2100. Providers update this record themselves, so call before visiting.
How can I verify Christopher Charles Claydon, M.D.'s license?
NPPES lists California license number A32908, 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 Christopher Charles Claydon, M.D. prescribe under Medicare Part D?
In 2024, Christopher Charles Claydon, M.D. had 387 Medicare Part D claims for 45 beneficiaries; 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.