Randolph Clarke, M.D.
Family Medicine Physician · Antioch, CA
Randolph Clarke, M.D. is a family medicine physician with a practice address in Antioch, California, and NPI 1538187612, issued on Jul 17, 2006. Check the license (California G40037, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Randolph Clarke
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G40037 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3436 Hillcrest 200, Antioch, CA 94509
- Phone
- (925) 777-1481
- Enumerated
- Jul 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Randolph Clarke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G40037Check 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% more Medicare Part D claims than the average family medicine physician in 2024
4,933 Medicare Part D claims for 279 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 365 claims were for opioids.
Most prescribed
- Atorvastatin Calcium236 claims
- Hydrocodone-Acetaminophen199 claims
- Levothyroxine Sodium183 claims
- Amlodipine Besylate155 claims
- Albuterol Sulfate Hfa154 claims
- Metformin Hcl140 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.
Randolph Clarke among 17,133 family medicine physician records in California
Randolph Clarke, M.D. 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 fileNo · 62% of these records are
- Record last updated2007 · 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).
30 family medicine physician records list a practice address in Antioch
They are 30 of the 2,184 NPPES records with a practice address in Antioch, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Antioch → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Seema Cameron, MDAntioch, CA 945091134369465
- John Copeland, MDAntioch, CA 945091649259961
- James Edwards, M.D.Antioch, CA 945091508885005
- Talia Firestein, MDAntioch, CA 945091184966707
- Douglas Folsom, MDAntioch, CA 945091831260470
- Naoko Ikeda, DOAntioch, CA 945091952403909
- Hamidreza Khonsari, M.D.Antioch, CA 945091306874714
- James Kravetz, DOAntioch, CA 945091861478901
Common questions
What is Randolph Clarke, M.D.'s NPI number?
Randolph Clarke, M.D.'s National Provider Identifier (NPI) is 1538187612, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Randolph Clarke, M.D. located?
The NPPES record lists a practice address at 3436 Hillcrest 200, Antioch, CA, 94509. Phone: (925) 777-1481. Providers update this record themselves, so call before visiting.
How can I verify Randolph Clarke, M.D.'s license?
NPPES lists California license number G40037, 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 Randolph Clarke, M.D. prescribe under Medicare Part D?
In 2024, Randolph Clarke, M.D. had 4,933 Medicare Part D claims for 279 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.