Cynthia Diaz, NP
NPI 1366049991 · Family Nurse Practitioner · New York, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Diaz, NP is a Family Nurse Practitioner provider in New York, NY (NPI 1366049991).
Provider details
- NPI number
- 1366049991
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- F345800 (NY)
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
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
245 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) |
|---|---|---|
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 78 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $87 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 55 | $40 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 26 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $124 |
Typical Medicare-allowed amounts for these services range $16–$124 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 33 | 30 |
| Azithromycin | 26 | 25 |
| Fluticasone Propionate | 20 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Ibuprofen | 16 | 16 |
| Cyclobenzaprine Hcl | 15 | 13 |
| Ofloxacin | 15 | 14 |
| Naproxen | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-10-06
- Last updated
- 2020-12-30
- Certified
- 2020-11-19
Frequently asked questions
- What is Cynthia Diaz's NPI number?
- Cynthia Diaz's National Provider Identifier (NPI) is 1366049991, 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 506 Fort Washington Ave Apt 1f, New York, NY 10033-2081.
- What is Cynthia Diaz's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Diaz is (212) 568-0553.
- 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 (1366049991) is active in the NPPES registry as of the last update on 2020-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.