Richard Leon Cazin, PA
Medical Physician Assistant · Danville, CA
Richard Leon Cazin, PA is a medical physician assistant with a practice address in Danville, California, and NPI 1043201460, issued on Nov 3, 2005. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Richard Leon Cazin
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA9101618 FL
Self-reported in NPPES; status is on the state search - Practice location
- 4165 Blackhawk Plaza Cir Ste 100, Danville, CA 94506
- Phone
- (925) 736-7070
- Enumerated
- Nov 3, 2005
- Record last updated
- Jan 3, 2022
- Fax
- (925) 736-7075
- Medicaid ID
- 0PA149630 CA
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 4165 Blackhawk Plaza Cir Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julia GovanPhysician Assistant1689314346
- Kelsey Martin, PA-CStudent in an Organized Health Care Education/Training Program1588444541
- Nathalie Michaud, M.D.Family Medicine Physician1467460022
Verify Richard Leon Cazin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average medical physician assistant in 2024
499 Medicare Part D claims for 307 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 51 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen43 claims
- Cephalexin42 claims
- Mupirocin28 claims
- Doxycycline Monohydrate26 claims
- Prednisone26 claims
- Baclofen24 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.
Richard Leon Cazin among 3,376 medical physician assistant records in California
Richard Leon Cazin, PA is one of 3,376 medical physician assistant records with a practice address in California. 69% 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, 98% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Danville → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Annie Humphrey, PA-CDanville, CA 945061427681535
- Margaret Bear, PA-CAntioch, CA 945091073460341
- Katherine De Castro, PA-CAntioch, CA 945091598501991
- James Jewell, PAAntioch, CA 945091437172848
- Elizabeth Martorana, PA-CAmerican Canyon, CA 945031205076361
- Christina Ramsden, PAAntioch, CA 945091497013965
- Jason Thompson, PAAntioch, CA 945091285157818
- Larry Angel, PA-CBenicia, CA 945101154708881
Common questions
What is Richard Leon Cazin, PA's NPI number?
Richard Leon Cazin, PA's National Provider Identifier (NPI) is 1043201460, issued on Nov 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Richard Leon Cazin, PA located?
The NPPES record lists a practice address at 4165 Blackhawk Plaza Cir Ste 100, Danville, CA, 94506. Phone: (925) 736-7070. Providers update this record themselves, so call before visiting.
How can I verify Richard Leon Cazin, PA's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Richard Leon Cazin, PA prescribe under Medicare Part D?
In 2024, Richard Leon Cazin, PA had 499 Medicare Part D claims for 307 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.