Mary O'Keeffe, M.D.
NPI 1881945541 · Hematology & Oncology Physician · Mineola, NY
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary O'Keeffe, M.D. is a Hematology & Oncology Physician provider in Mineola, NY (NPI 1881945541).
Provider details
- NPI number
- 1881945541
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 266834 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,709 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 1,280 | $146 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 910 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 188 | $205 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 92 | $88 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 79 | $250 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Enzalutamidebrand: Xtandi | 182 | 30 |
| Prednisone | 116 | 36 |
| Abiraterone Acetate | 76 | 18 |
| Cabozantinib S-Malatebrand: Cabometyx | 72 | — |
| Darolutamidebrand: Nubeqa | 63 | — |
| Relugolixbrand: Orgovyx | 56 | 13 |
| Prochlorperazine Maleate | 41 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-09-20
- Last updated
- 2021-03-10
- Certified
- 2021-03-10
Frequently asked questions
- What is Mary O'Keeffe's NPI number?
- Mary O'Keeffe's National Provider Identifier (NPI) is 1881945541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Keeffe's specialty?
- Mary O'Keeffe is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary O'Keeffe located?
- Mary O'Keeffe's practice location on file with NPPES is 200 Old Country Rd, Mineola, NY 11501-4235.
- What is Mary O'Keeffe's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Keeffe is (516) 663-9500.
- Does Mary O'Keeffe accept Medicare?
- Mary O'Keeffe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary O'Keeffe's NPI active?
- Yes — Mary O'Keeffe's NPI (1881945541) is active in the NPPES registry as of the last update on 2021-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.