Oscar Diaz, PHARMD
Pharmacist · Tucson, AZ
Oscar Diaz, PHARMD is a pharmacist with a practice address in Tucson, Arizona, and NPI 1770264756, issued on Jul 31, 2023. Check the license (Arizona S026549, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oscar Diaz
- Credential
- PHARMD
- Primary taxonomy
- Pharmacist 183500000X
- License number
- S026549 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 9495 E Speedway Blvd, Tucson, AZ 85710
- Phone
- (520) 290-4143
- Enumerated
- Jul 31, 2023
- Record last updated
- Jul 31, 2023
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 6,746 in Arizona → Look up another NPI →
Also registered at 9495 E Speedway Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Frankenfeld, RPHPharmacist1184954398
- Joanne McDaniels, DOCTOR OF PHARMACYPharmacist1831420553
- Steven Yen, PHARMDPharmacist1558037606
Verify Oscar Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license S026549Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 95% of the cost of the top drugs
244 Medicare Part D claims for 218 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy102 claims
- Shingrix87 claims
- Boostrix Tdap38 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.
Oscar Diaz among 6,746 pharmacist records in Arizona
Oscar Diaz, PHARMD is one of 6,746 pharmacist records with a practice address in Arizona. 27% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 90% of them.
- NPI issued2023 · 90% of these records are older, 7% newer
- In a Medicare fileYes · 27% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2023 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
999 pharmacist records list a practice address in Tucson
They are 999 of the 18,788 NPPES records with a practice address in Tucson, and 6,746 pharmacist records in Arizona.
All 6,746 in Arizona → Every provider in Tucson → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Nicole Cariveau, PHARM.D.Tucson, AZ 857101902136971
- Steven CleaverTucson, AZ 857101790007961
- Justin Cole, PHARM.DTucson, AZ 857101134450117
- Linda Frankenfeld, RPHTucson, AZ 857101184954398
- Ryan Loukota, PHARMDTucson, AZ 857101740511773
- Keith Lowrie, R.PH.Tucson, AZ 857101407186513
- Caitlin Martin, PHARM.D.Tucson, AZ 857101326378308
- Joanne McDaniels, DOCTOR OF PHARMACYTucson, AZ 857101831420553
Common questions
What is Oscar Diaz, PHARMD's NPI number?
Oscar Diaz, PHARMD's National Provider Identifier (NPI) is 1770264756, issued on Jul 31, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Oscar Diaz, PHARMD located?
The NPPES record lists a practice address at 9495 E Speedway Blvd, Tucson, AZ, 85710. Phone: (520) 290-4143. Providers update this record themselves, so call before visiting.
How can I verify Oscar Diaz, PHARMD's license?
NPPES lists Arizona license number S026549, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Oscar Diaz, PHARMD prescribe under Medicare Part D?
In 2024, Oscar Diaz, PHARMD had 244 Medicare Part D claims for 218 beneficiaries; the average among pharmacist prescribers was 119. 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.