Cynthia Diaz, FNP-C
NPI 1679128466 · Family Nurse Practitioner · San Manuel, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Diaz, FNP-C is a Family Nurse Practitioner provider in San Manuel, AZ (NPI 1679128466).
Provider details
- NPI number
- 1679128466
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 230536 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
537 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 148 | $105 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 138 | $75 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 104 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 46 | $106 |
| Hemoglobin A1c Level83036 | 45 | $10 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 95 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 202 | 68 |
| Atorvastatin Calcium | 152 | 58 |
| Lisinopril | 138 | 47 |
| Losartan Potassium | 119 | 37 |
| Amlodipine Besylate | 112 | 41 |
| Gabapentin | 98 | 35 |
| Omeprazole |
Practice location
Mailing address
Additional practice locations (2)
- 1530 W Liddell DrTucson, AZ 85704-2144Phone: (661) 609-6042
- 6050 N Corona RdTucson, AZ 85704-1096Phone: (520) 469-8700
Registry dates
- Enumerated
- 2019-08-07
- Last updated
- 2021-01-08
- Certified
- 2021-01-08
Frequently asked questions
- What is Cynthia Diaz's NPI number?
- Cynthia Diaz's National Provider Identifier (NPI) is 1679128466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Diaz's specialty?
- Cynthia Diaz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cynthia Diaz located?
- Cynthia Diaz's practice location on file with NPPES is 23 S Mcnab Pkwy, San Manuel, AZ 85631-1156.
- What is Cynthia Diaz's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Diaz is (520) 385-2234.
- Does Cynthia Diaz accept Medicare?
- Cynthia Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Diaz's NPI active?
- Yes — Cynthia Diaz's NPI (1679128466) is active in the NPPES registry as of the last update on 2021-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.