Elizabeth Ann Mastroianni, FNP
Family Nurse Practitioner · Fresno, CA
Elizabeth Ann Mastroianni, FNP is a family nurse practitioner with a practice address in Fresno, California, and NPI 1336528348, issued on May 22, 2015. Check the license (California 10342, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Elizabeth Ann Mastroianni
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 10342 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1225 M St, Fresno, CA 93721
- Phone
- (559) 600-9358
- Enumerated
- May 22, 2015
- Record last updated
- May 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (559) 442-5277
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 1225 M St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jose Aguilar, LCSWClinical Social Worker1730495060
- Caroline AhlstromMarriage & Family Therapist1609249606
Verify Elizabeth Ann Mastroianni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 10342Check 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 family nurse practitioner in 2024
91 Medicare Part D claims for 13 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Buprenorphine-Naloxone53 claims
- Vivitrol13 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.
Elizabeth Ann Mastroianni among 16,966 family nurse practitioner records in California
Elizabeth Ann Mastroianni, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 31% of them.
- NPI issued2015 · 31% of these records are older, 65% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2015 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
393 family nurse practitioner records list a practice address in Fresno
They are 393 of the 19,440 NPPES records with a practice address in Fresno, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Fresno → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Juan BedollaFresno, CA 937211386850998
- Julio Garibay, FNP-CFresno, CA 937211669928644
- Nellie Go, F.N.P.Fresno, CA 937211922167857
- Ramona Guzman, NPFresno, CA 937211578554150
- Lydia Hadley, RN, FNPFresno, CA 937211588641617
- Stephanie Kapsimallis, FNPFresno, CA 937211508202813
- Beverly Loera, FNPFresno, CA 937211558331702
- Susan Peron, FNPFresno, CA 937211861519852
Common questions
What is Elizabeth Ann Mastroianni, FNP's NPI number?
Elizabeth Ann Mastroianni, FNP's National Provider Identifier (NPI) is 1336528348, issued on May 22, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Ann Mastroianni, FNP located?
The NPPES record lists a practice address at 1225 M St, Fresno, CA, 93721. Phone: (559) 600-9358. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Ann Mastroianni, FNP's license?
NPPES lists California license number 10342, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Elizabeth Ann Mastroianni, FNP prescribe under Medicare Part D?
In 2024, Elizabeth Ann Mastroianni, FNP had 91 Medicare Part D claims for 13 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.