Ronald E. Diaz, FNP
Family Nurse Practitioner · Tucson, AZ
Ronald E. Diaz, FNP is a family nurse practitioner with a practice address in Tucson, Arizona, and NPI 1124263561, issued on Dec 15, 2008. Check the license (Arizona AP3518, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronald E. Diaz
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- AP3518 AZ
RN119389 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2940 S 6TH Ave, Tucson, AZ 85713
- Phone
- (520) 613-1001
- Enumerated
- Dec 15, 2008
- Record last updated
- Jun 6, 2025
- Fax
- (520) 504-6483
- Medicaid ID
- 483140 AZ
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,933 in Arizona → Look up another NPI →
Also registered at 2940 S 6TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Corbin Ballam, DOInternal Medicine Physician1205282894
- Sonia Bertram, FNP-CFamily Nurse Practitioner1043637424
- Sarah Bivens, FNPFamily Nurse Practitioner1386653251
- Emily Coston, NPFamily Nurse Practitioner1174298707
- Gustavo Iturralde Arriaga, FNP-CFamily Nurse Practitioner1437848744
- Kristen Molander, ARNPInternal Medicine Physician1053755223
Verify Ronald E. 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 AP3518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average family nurse practitioner in 2024
2,067 Medicare Part D claims for 331 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Atorvastatin Calcium169 claims
- Levothyroxine Sodium88 claims
- Lisinopril80 claims
- Amlodipine Besylate79 claims
- Metformin Hcl70 claims
- Metformin Hcl Er55 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.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.05
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ronald E. Diaz among 5,933 family nurse practitioner records in Arizona
Ronald E. Diaz, FNP is one of 5,933 family nurse practitioner records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 12% of them.
- NPI issued2008 · 12% of these records are older, 86% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2025 · 38% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
907 family nurse practitioner records list a practice address in Tucson
They are 907 of the 18,788 NPPES records with a practice address in Tucson, and 5,933 family nurse practitioner records in Arizona.
All 5,933 in Arizona → Every provider in Tucson → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Angela Armenta, NP-CTucson, AZ 857131992018980
- Kenneth Babbitt, FNPTucson, AZ 857131073552246
- Carie Baumann, FNPTucson, AZ 857131326217845
- Sarah Bivens, FNPTucson, AZ 857131386653251
- Mark Bonin, FNP-CTucson, AZ 857131619220019
- Lee Chesnick, MSN RN APRN FNP-BCTucson, AZ 857131891095501
- Wade Hunsaker, FNPTucson, AZ 857131154520658
- Bart Hunter, D.C., FNPTucson, AZ 857131437383932
Common questions
What is Ronald E. Diaz, FNP's NPI number?
Ronald E. Diaz, FNP's National Provider Identifier (NPI) is 1124263561, issued on Dec 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ronald E. Diaz, FNP located?
The NPPES record lists a practice address at 2940 S 6TH Ave, Tucson, AZ, 85713. Phone: (520) 613-1001. Providers update this record themselves, so call before visiting.
How can I verify Ronald E. Diaz, FNP's license?
NPPES lists Arizona license number AP3518, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Ronald E. Diaz, FNP prescribe under Medicare Part D?
In 2024, Ronald E. Diaz, FNP had 2,067 Medicare Part D claims for 331 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Ronald E. Diaz, FNP's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.