Frank Mazzone, MD
Family Medicine Physician · San Luis Obispo, CA
Frank Mazzone, MD is a family medicine physician with a practice address in San Luis Obispo, California, and NPI 1902939408, issued on Mar 13, 2007. Check the license (California A44092, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frank Mazzone
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A44092 CA
Self-reported in NPPES; status is on the state search - Practice location
- 47 Santa Rosa St, San Luis Obispo, CA 93405
- Phone
- (805) 542-9596
- Enumerated
- Mar 13, 2007
- Record last updated
- Jun 7, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (805) 542-0845
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 47 Santa Rosa St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Gingrich, PAPhysician Assistant1134252653
- Jonathan Hamrick, MDFamily Medicine Physician1174575567
- James Harrison, MDFamily Medicine Physician1417280082
Verify Frank Mazzone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A44092Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average family medicine physician in 2024
1,707 Medicare Part D claims for 124 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. 95 claims were for opioids.
Most prescribed
- Lisinopril92 claims
- Atorvastatin Calcium88 claims
- Zolpidem Tartrate65 claims
- Levothyroxine Sodium51 claims
- Metoprolol Succinate50 claims
- Amlodipine Besylate49 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.
Frank Mazzone among 17,133 family medicine physician records in California
Frank Mazzone, 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2016 · 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).
41 family medicine physician records list a practice address in San Luis Obispo
They are 41 of the 3,403 NPPES records with a practice address in San Luis Obispo, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Luis Obispo → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Andrea Angelucci, D.O.San Luis Obispo, CA 934051851616106
- Lisa Brazil, C.F.N.P.San Luis Obispo, CA 934051154419117
- Mary Brown, MDSan Luis Obispo, CA 934051346280492
- Tyler Campbell, MDSan Luis Obispo, CA 934051962535385
- Eric Dunlop, DOSan Luis Obispo, CA 934051225334618
- Jonathan Hamrick, MDSan Luis Obispo, CA 934051174575567
- James Harrison, MDSan Luis Obispo, CA 934051417280082
- David Leece, M.D.San Luis Obispo, CA 934051528037561
Common questions
What is Frank Mazzone, MD's NPI number?
Frank Mazzone, MD's National Provider Identifier (NPI) is 1902939408, issued on Mar 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Frank Mazzone, MD located?
The NPPES record lists a practice address at 47 Santa Rosa St, San Luis Obispo, CA, 93405. Phone: (805) 542-9596. Providers update this record themselves, so call before visiting.
How can I verify Frank Mazzone, MD's license?
NPPES lists California license number A44092, 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 Frank Mazzone, MD prescribe under Medicare Part D?
In 2024, Frank Mazzone, MD had 1,707 Medicare Part D claims for 124 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.