Maria Nieto, MD
NPI 1548496326 · Medical Oncology Physician · New York, NY
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Nieto, MD is a Medical Oncology Physician provider in New York, NY (NPI 1548496326).
Provider details
- NPI number
- 1548496326
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 236570 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
525 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 | 186 | $143 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 119 | $204 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 54 | $190 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 47 | $86 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 34 | $132 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 120 | 19 |
| Hydroxyurea | 94 | 14 |
| Acyclovir | 80 | 19 |
| Gabapentin | 64 | 16 |
| Pantoprazole Sodium | 42 | 13 |
| Ondansetron Hcl | 42 | 22 |
| Folic Acid | 39 | — |
| Lenalidomide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-07
- Last updated
- 2009-06-07
Frequently asked questions
- What is Maria Nieto's NPI number?
- Maria Nieto's National Provider Identifier (NPI) is 1548496326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Nieto's specialty?
- Maria Nieto is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Nieto located?
- Maria Nieto's practice location on file with NPPES is 1 Gustave L Levy Pl # 1410, New York, NY 10029-6500.
- What is Maria Nieto's phone number?
- The practice phone number listed in the NPPES registry for Maria Nieto is (212) 241-6021.
- Does Maria Nieto accept Medicare?
- Maria Nieto is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Nieto's NPI active?
- Yes — Maria Nieto's NPI (1548496326) is active in the NPPES registry as of the last update on 2009-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.