Oliver Diaz, ACNP
NPI 1215110267 · Acute Care Nurse Practitioner · New York, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oliver Diaz, ACNP is a Acute Care Nurse Practitioner provider in New York, NY (NPI 1215110267).
Provider details
- NPI number
- 1215110267
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ACNP
- Sex
- Male
- Sole proprietor
- No
- License
- 430373 (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
18 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
120 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 79 | $209 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 41 | $117 |
Typical Medicare-allowed amounts for these services range $117–$209 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-12-13
- Last updated
- 2023-03-18
- Certified
- 2023-03-18
Frequently asked questions
- What is Oliver Diaz's NPI number?
- Oliver Diaz's National Provider Identifier (NPI) is 1215110267, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oliver Diaz's specialty?
- Oliver Diaz is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Oliver Diaz located?
- Oliver Diaz's practice location on file with NPPES is 622 W 168th St, New York, NY 10032-3720.
- What is Oliver Diaz's phone number?
- The practice phone number listed in the NPPES registry for Oliver Diaz is (646) 317-4570.
- Does Oliver Diaz accept Medicare?
- Oliver Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oliver Diaz's NPI active?
- Yes — Oliver Diaz's NPI (1215110267) is active in the NPPES registry as of the last update on 2023-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.