Yair Keilson, MD
NPI 1861601197 · Hematology & Oncology Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yair Keilson, MD is a Hematology & Oncology Physician provider in Brooklyn, NY (NPI 1861601197).
Provider details
- NPI number
- 1861601197
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 242397 (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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,843 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 948 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 629 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 619 | $145 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 231 | $103 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 206 | $206 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 93 | 21 |
| Hydroxyurea | 55 | 18 |
| Ibrutinibbrand: Imbruvica | 42 | — |
| Anastrozole | 33 | — |
| Rivaroxabanbrand: Xarelto | 27 | — |
| Atorvastatin Calcium | 22 | — |
| Letrozole | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$489 across 19 records (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
Additional practice locations (1)
- 200 Boundary AveSuite 200Massapequa, NY 11758-1152Phone: (516) 755-2404
Registry dates
- Enumerated
- 2007-05-22
- Last updated
- 2023-03-23
- Certified
- 2023-03-23
Frequently asked questions
- What is Yair Keilson's NPI number?
- Yair Keilson's National Provider Identifier (NPI) is 1861601197, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yair Keilson's specialty?
- Yair Keilson is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Yair Keilson located?
- Yair Keilson's practice location on file with NPPES is 902 Quentin Rd, Brooklyn, NY 11223-2214.
- What is Yair Keilson's phone number?
- The practice phone number listed in the NPPES registry for Yair Keilson is (917) 736-9740.
- Does Yair Keilson accept Medicare?
- Yair Keilson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yair Keilson's NPI active?
- Yes — Yair Keilson's NPI (1861601197) is active in the NPPES registry as of the last update on 2023-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.