Azriel Hirschfeld, M.D.
NPI 1043240336 · Hematology & Oncology Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Azriel Hirschfeld, M.D. is a Hematology & Oncology Physician provider in Brooklyn, NY (NPI 1043240336).
Provider details
- NPI number
- 1043240336
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 253397 (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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
7,839 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) |
|---|---|---|
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 2,200 | $33 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 947 | $193 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 853 | $152 |
| Administration of Additional New Drug Or Substance Into Vein, 1 Hour Or Less96417 | 627 | $75 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 523 | $141 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl/Pfbrand: Ondansetron Hcl | 205 | 62 |
| Leucovorin Calcium | 196 | 58 |
| Irinotecan Hcl | 192 | 59 |
| Famotidine/Pfbrand: Famotidine | 189 | 59 |
| Fluorouracil | 181 | 51 |
| Dexamethasone Sodium Phosp/Pfbrand: Dexamethasone Sodium Phosphate | 179 | 60 |
| Oxaliplatin | 140 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,853 across 104 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 (2)
- 16 Sumner Pl Fl 4Brooklyn, NY 11206-4110Phone: (718) 732-4050
- 728 N Main StNew Square, NY 10977-8916Phone: (845) 354-9300Fax: (845) 354-3305
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2025-03-03
- Certified
- 2025-03-03
Frequently asked questions
- What is Azriel Hirschfeld's NPI number?
- Azriel Hirschfeld's National Provider Identifier (NPI) is 1043240336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Azriel Hirschfeld's specialty?
- Azriel Hirschfeld is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Azriel Hirschfeld located?
- Azriel Hirschfeld's practice location on file with NPPES is 19 Fayette St, Brooklyn, NY 11206-4597.
- What is Azriel Hirschfeld's phone number?
- The practice phone number listed in the NPPES registry for Azriel Hirschfeld is (718) 732-4050.
- Does Azriel Hirschfeld accept Medicare?
- Azriel Hirschfeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Azriel Hirschfeld's NPI active?
- Yes — Azriel Hirschfeld's NPI (1043240336) is active in the NPPES registry as of the last update on 2025-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.