Medicare Enrolled
Dr. Azriel Hirschfeld, M.D.
Hematology & Oncology · Brooklyn, NY
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Hirschfeld from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Hirschfeld
Dr. Azriel Hirschfeld is a hematology & oncology specialist in Brooklyn, NY, with 20 years of NPI registration. Based on federal Medicare data, Dr. Hirschfeld performed 141,354.2 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Hirschfeld received a total of $39,567 from 74 pharmaceutical and/or device companies across 1107 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Hirschfeld is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years of NPI registration
▲ Top 4% volume in NY
$39,567 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗141,354.2
Medicare services
Top 4% in NY for hematology & oncology
Not available
Unique patients (not deduplicated)
$4
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Oxaliplatin chemotherapy injection This procedure involves the administration of oxaliplatin, a chemotherapy medication, via injection. The dosage specified is 0.5 mg. |
82,986 | $0 | $0 |
| Anti-nausea injection (ondansetron/Zofran) | 15,431 | $0 | $0 |
| Injection, atropine sulfate, 0.01 mg | 12,884 | $0 | $0 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
7,172 | $0 | $13 |
| Injection, irinotecan, 20 mg | 4,083 | $1 | $2 |
| Injection, leucovorin calcium, per 50 mg | 3,371 | $1 | $4 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
3,160 | $27 | $96 |
| Fluorouracil injection, 500 mg Administration of a 500 mg dose of fluorouracil medication via injection. |
2,488 | $1 | $2 |
| Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg | 2,141 | $1 | $7 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
1,280 | $141 | $276 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
1,061 | $126 | $458 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
848 | $8 | $21 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
675.2 | $62 | $342 |
| Injection, sodium ferric gluconate complex in sucrose injection, 12.5 mg | 650 | $1 | $130 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
484 | $12 | $358 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
468 | $15 | $127 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
414 | $27 | $485 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
352 | $8 | $45 |
| Normal saline infusion, 1000 cc Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution. |
341 | $1 | $16 |
| Prolonged intravenous chemotherapy administration This procedure involves the administration of chemotherapy medication directly into a vein over an extended period. |
248 | $124 | $677 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
177 | $99 | $220 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
167 | $61 | $265 |
| IV chemotherapy initiation with community continuation Initiation of an intravenous chemotherapy infusion in a clinic using clinic supplies, with continuation of the infusion in a community setting such as home or assisted living. |
121 | $232 | $740 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
90 | $0 | $28 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
84 | $19 | $354 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
51 | $83 | $254 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
43 | $53 | $85 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
36 | $30 | $357 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
26 | $13 | $34 |
| New patient office visit, complex (60-74 min) | 22 | $198 | $523 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
3.9% high complexity
93.8% medium
2.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$39,567
Total received (2018-2024)
Avg $5,652/year across 7 years
Top 13% in NY for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
74
Companies
1,107
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,853
2023
$2,387
2022
$4,225
2021
$4,705
2020
$3,962
2019
$11,081
2018
$10,355
Payments by company (2024)
Novartis Pharmaceuticals Corporation
$1,071
Eisai Inc.
$248
Menarini Silicon Biosystems, Inc.
$246
AstraZeneca Pharmaceuticals LP
$191
Stemline Therapeutics Inc.
$158
Bayer Healthcare Pharmaceuticals Inc.
$134
Ipsen Biopharmaceuticals, Inc
$114
GlaxoSmithKline, LLC.
$108
PFIZER INC.
$91
Janssen Biotech, Inc.
$67
Gilead Sciences, Inc.
$61
Lilly USA, LLC
$55
Cumberland Pharmaceuticals, Inc.
$54
Exelixis Inc.
$42
E.R. Squibb & Sons, L.L.C.
$42
Aveo Pharmaceuticals, Inc.
$32
TAIHO ONCOLOGY, INC.
$27
ABBVIE INC.
$22
Tempus AI, Inc
$21
Daiichi Sankyo Inc.
$18
Merck Sharp & Dohme LLC
$18
SpringWorks Therapeutics, Inc.
$17
ARRAY BIOPHARMA INC
$16
Top 3 companies account for 54.8% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$17,500
Exelixis Inc.
$3,633
Novartis Pharmaceuticals Corporation
$3,559
PFIZER INC.
$1,537
Lilly USA, LLC
$1,217
E.R. Squibb & Sons, L.L.C.
$819
Janssen Biotech, Inc.
$818
Amgen Inc.
$786
Merck Sharp & Dohme Corporation
$684
Seagen Inc.
$666
Incyte Corporation
$648
Eisai Inc.
$594
Ipsen Biopharmaceuticals, Inc
$418
Rigel Pharmaceuticals, Inc.
$397
Astellas Pharma US Inc
$323
GENZYME CORPORATION
$303
Daiichi Sankyo Inc.
$295
GlaxoSmithKline, LLC.
$288
Taiho Oncology, Inc.
$267
Merck Sharp & Dohme LLC
$263
Boehringer Ingelheim Pharmaceuticals, Inc.
$252
Menarini Silicon Biosystems, Inc.
$246
Genentech USA, Inc.
$231
PUMA BIOTECHNOLOGY, INC.
$223
Gilead Sciences, Inc.
$215
EISAI INC.
$210
Stemline Therapeutics Inc.
$203
Foundation Medicine, Inc.
$189
Bayer Healthcare Pharmaceuticals Inc.
$184
Clovis Oncology, Inc.
$181
NOVARTIS PHARMACEUTICALS CORPORATION
$167
EMD Serono, Inc.
$149
ABBVIE INC.
$149
Cumberland Pharmaceuticals, Inc.
$135
Teva Pharmaceuticals USA, Inc.
$131
Bayer HealthCare Pharmaceuticals Inc.
$129
Nestle HealthCare Nutrition Inc.
$125
TESARO, Inc.
$125
MENARINI SILICON BIOSYSTEMS, INC.
$83
Puma Biotechnology, Inc.
$79
TAIHO ONCOLOGY, INC.
$74
Myriad Genetic Laboratories, Inc.
$71
Kyowa Kirin, Inc.
$70
Seattle Genetics, Inc.
$65
Celgene Corporation
$64
Sirtex Medical Inc
$63
Sun Pharmaceutical Industries Inc.
$63
ARRAY BIOPHARMA INC
$60
AVEO Pharmaceuticals, Inc.
$52
AbbVie, Inc.
$48
AbbVie Inc.
$40
Aveo Pharmaceuticals, Inc.
$32
Helsinn Therapeutics (U.S.), Inc.
$30
Verity Pharmaceuticals Inc.
$26
Acceleron Pharma, Inc.
$25
Regeneron Healthcare Solutions, Inc.
$25
Myovant Sciences Inc.
$23
Mylan Institutional Inc.
$23
TerSera Therapeutics LLC
$23
G1 Therapeutics, Inc.
$23
Alexion Pharmaceuticals, Inc.
$22
Coherus Biosciences Inc.
$22
Tempus AI, Inc
$21
Dova Pharmaceuticals
$20
Karyopharm Therapeutics Inc.
$20
Blue Earth Diagnostics Limited
$19
Spectrum Pharmaceuticals Inc.
$19
Novocure Inc.
$19
Blueprint Medicines Corporation
$18
SpringWorks Therapeutics, Inc.
$17
JAZZ PHARMACEUTICALS INC.
$16
Takeda Pharmaceuticals U.S.A., Inc.
$14
ImmunoGen, Inc.
$13
Janssen Pharmaceuticals, Inc
$9
Top 3 companies account for 62.4% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AFINITOR · AKYNZEO · ALUNBRIG · Abraxane · Alecensa · Avastin · Axumin · BALVERSA · BAVENCIO · BENDEKA · BLENREP · BOSULIF · BRAFTOVI · Bavencio · CABOMETYX · CALQUENCE · COSELA · CREON · CYRAMZA · Cabometyx · Cellsearch · Creon · DARZALEX · Doptelet · ELAHERE · ELIQUIS · ELITEK · ENHERTU · ERBITUX · ERLEADA · Elahere · Enhertu · Erleada · FARESTON · FASLODEX · FOTIVDA · FOUNDATIONONE · GAVRETO · GILOTRIF · IBRANCE · IMBRUVICA · IMFINZI · INFUGEM · INJECTAFER · INLYTA · INQOVI · JAKAFI · JEMPERLI · JEVTANA · KANJINTI · KEYTRUDA · KISQALI · Kyprolis · LENVIMA · LIBTAYO · LONSURF · LORBRENA · LUMAKRAS · LUTATHERA · LYNPARZA · Lenvima · Lonsurf · MEKINIST · MONJUVI · NERLYNX · Nerlynx · Neulasta · Nplate · Nubeqa · ODOMZO · OGSIVEO · OPDIVO · ORGOVYX · Ogivri · Onivyde · Optune · Orserdu · PADCEV · PIQRAY · POTELIGEO · PRECISETUMOR · Perjeta · RETEVMO · ROLVEDON · ROZLYTREK · RYBREVANT · Reblozyl · Revlimid · Rubraca · SANCUSO · SANDOSTATIN LAR · SARCLISA · SIR-Spheres Microspheres · SOLIRIS · SOMATULINE DEPOT · SUTENT · Somatuline Depot · Stivarga · TABRECTA · TAGRISSO · TECENTRIQ · TUKYSA · Tavalisse · Trelstar · Trodelvy · Truxima · Turalio · Udenyca · VARUBI · VENCLEXTA · VERZENIO · VOTRIENT · Vectibix · Venclexta · Vitrakvi · XALKORI · XGEVA · XOSPATA · XPOVIO · XT CDX · XTANDI · Xofigo · Xtandi · YONSA · ZEJULA · ZENPEP · ZEPZELCA · ZOLADEX · ZYTIGA
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Hematology & oncology specialists in nearby ZIP areas
728
County median income
$78,548
Nearest hospital to ZIP centroid (approximate)
WOODHULL MEDICAL & MENTAL HEALTH CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Hirschfeld is a mixed practice specialist, with above-average Medicare volume (top 4% in NY), with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Hirschfeld experienced with oxaliplatin chemotherapy injection?
Based on Medicare claims data, Dr. Hirschfeld performed 82,986 oxaliplatin chemotherapy injection services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Hirschfeld receive payments from pharmaceutical companies?
Yes. Dr. Hirschfeld received a total of $39,567 from 74 companies across 1,107 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Hirschfeld's costs compare to other hematology & oncology specialists in Brooklyn?
Dr. Hirschfeld's average Medicare payment per service is $4. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Hirschfeld) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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