Clayton K. Casey, MD
Family Medicine Physician · Modesto, CA
Clayton K. Casey, MD is a family medicine physician with a practice address in Modesto, California, and NPI 1215477955, issued on Feb 28, 2017. Check the license (California A160928, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Clayton K. Casey
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A160928 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1501 Oakdale RD Ste 301, Modesto, CA 95355
- Phone
- (209) 622-0936
- Enumerated
- Feb 28, 2017
- Record last updated
- May 7, 2025
- Fax
- (209) 622-0863
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1501 Oakdale RD Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Clayton K. Casey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A160928Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
15 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Clayton K. Casey among 17,133 family medicine physician records in California
Clayton K. Casey, 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 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).
173 family medicine physician records list a practice address in Modesto
They are 173 of the 9,262 NPPES records with a practice address in Modesto, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Modesto → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Tracy Brockman, M.D.Modesto, CA 953551871553636
- James Carlson, MDModesto, CA 953551396700381
- Jack Collins, M.D.Modesto, CA 953551245290865
- Richelle Cruz, MDModesto, CA 953551780639427
- Silvia Diego, MDModesto, CA 953551922080506
- Arun Duggal, M.D.Modesto, CA 953551992751937
- Scott Goodreau, M.D.Modesto, CA 953551124089461
- Binh Le, M.D.Modesto, CA 953551598729410
Common questions
What is Clayton K. Casey, MD's NPI number?
Clayton K. Casey, MD's National Provider Identifier (NPI) is 1215477955, issued on Feb 28, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Clayton K. Casey, MD located?
The NPPES record lists a practice address at 1501 Oakdale RD Ste 301, Modesto, CA, 95355. Phone: (209) 622-0936. Providers update this record themselves, so call before visiting.
How can I verify Clayton K. Casey, MD's license?
NPPES lists California license number A160928, 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 Clayton K. Casey, MD prescribe under Medicare Part D?
In 2024, Clayton K. Casey, MD had 15 Medicare Part D claims; 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.