DR. AZRIEL HIRSCHFELD M.D.
NPI 1043240336
Internal Medicine - Hematology & Oncology in Brooklyn, NY

Q: What is Azriel Hirschfeld's NPI number?

The NPI number for Azriel Hirschfeld is 1043240336. It was assigned to this individual provider in the NPPES registry on July 3, 2006.

Q: What is Azriel Hirschfeld's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Azriel Hirschfeld was last updated on March 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 03, 2006PECOS EnrolledAccepts Medicare Assignment

19 FAYETTE ST, BROOKLYN, NY 11206(718) 732-4050(718) 881-4445 Get Directions Write a Review

NPPES record last updated: March 3, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Azriel Hirschfeld M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. AZRIEL HIRSCHFELD M.D. (NPI 1043240336) is an individual hematology & oncology provider in Brooklyn, New York, licensed in New York (253397) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Maimonides Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1043240336

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. AZRIEL HIRSCHFELDCredential: M.D.

Location Address19 FAYETTE STBrooklyn, NY 11206-4597

Mailing Address705 Caffrey AveFar Rockaway, NY 11691-5301 · (718) 732-4050 · Fax (718) 881-4445

Phone(718) 732-4050

Fax(718) 881-4445

Sole ProprietorNo

Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 2002

Enumeration DateJuly 3, 2006

Last NPPES UpdateMarch 3, 2025

NPPES CertifiedMarch 3, 2025

✔ NPI 1043240336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in NY · 253397

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

19 FAYETTE ST, Brooklyn, NY 11206

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Secondary Practice Locations 2

Location 116 Sumner Pl Fl 4Brooklyn, NY 11206-4110 · Phone (718) 732-4050

Location 2728 N Main StNew Square, NY 10977-8916 · Phone (845) 354-9300 · Fax (845) 354-3305

Other Identifiers 1

Medicaid410317300MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Azriel Hirschfeld M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5294754552

PECOS Enrollment IDI20110720000184

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Azriel Hirschfeld reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Azriel Hirschfeld MD PLLC

5.0 mi

Hematology & Oncology

4303 14TH AVE
Brooklyn, NY 11219

Reassigned Medicare billing, New Jersey and New York enrollments
4 clinicians in this Medicare group

NPI 1154936029 (917) 686-3953

Maimonides Faculty Practice Plan

5.2 mi

Internal Medicine

4802 10TH AVE
Brooklyn, NY 11219

Reassigned Medicare billing, New York enrollment
1,177 clinicians in this Medicare group

NPI 1053344846 (718) 283-8700

Ahava Medical And Rehabilitation Center, LLC

5.4 mi

Rehabilitation Practitioner

2555 NOSTRAND AVE
Brooklyn, NY 11210

Reassigned Medicare billing, New York enrollment
279 clinicians in this Medicare group

NPI 1184878274 (718) 951-8800

Mmc Hematology Oncology Fpp

5.9 mi

Hematology & Oncology

6300 8TH AVE
Brooklyn, NY 11220

Reassigned Medicare billing, New York enrollment
38 clinicians in this Medicare group

NPI 1598878217 (718) 283-8773

Refuah Health Center, Inc.

29 mi

Federally Qualified Health Center (FQHC)

5 TWIN AVENUE
Spring Valley, NY 10977

Reassigned Medicare billing, New York enrollment
206 clinicians in this Medicare group

NPI 1952678245 (845) 354-9300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 29

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, oxaliplatin, 0.5 mg J9263

Oxaliplatin is a chemotherapy drug that is administered via injection. It works by stopping cancer cells from growing and dividing, which helps in the treatment of certain types of cancer. The dosage is 0.5 mg, and it's important to follow your doctor's instructions for this treatment.

49,711 services41 patients

Injection, ondansetron hydrochloride, per 1 mg J2405

Ondansetron hydrochloride is a medication given via injection to help prevent nausea and vomiting, often due to chemotherapy or surgery. It works by blocking certain chemicals in the body that trigger these symptoms.

9,868 services61 patients

Injection, atropine sulfate, 0.01 mg J0461

Atropine sulfate is a medication given via injection to regulate heart rate or treat certain types of poisoning. The 0.01 mg dosage is carefully measured to provide effective, safe treatment.

8,564 services42 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

4,447 services62 patients

Injection, irinotecan, 20 mg J9206

Irinotecan is a chemotherapy drug given by injection to treat certain types of cancer. It works by slowing or stopping the growth of cancer cells. The 20 mg dosage refers to the amount of medication in each injection. Side effects can occur, so regular monitoring is key.

2,559 services46 patients

Injection, leucovorin calcium, per 50 mg J0640

Leucovorin calcium is an injection given to enhance the effectiveness of certain cancer treatments or to reduce the harmful effects of some medications. The dose is determined by your doctor and is typically administered in a healthcare setting.

2,278 services47 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

2,200 services72 patients

Injection, fluorouracil, 500 mg J9190

Fluorouracil is a chemotherapy drug, given as an injection to treat various types of cancer. The 500 mg dose helps to stop cancer cells from growing and multiplying. You might feel some side effects, but these are typically manageable.

1,644 services47 patients

Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg J9201

Gemcitabine hydrochloride is a medication given via injection to treat certain types of cancer. The 200 mg dose is administered by a healthcare professional. The drug works by slowing or stopping the growth of cancer cells in the body. It's important to follow your doctor's instructions while receiving this treatment.

1,195 services34 patients

Injection, sodium ferric gluconate complex in sucrose injection, 12.5 mg J2916

Sodium ferric gluconate complex in sucrose injection is a treatment for iron deficiency, often used in patients with kidney problems. The 12.5 mg dose is injected into a vein to help increase iron levels in the body, supporting overall health.

1,007 services27 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

947 services126 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

853 services79 patients

Administration of additional new drug or substance into vein, 1 hour or less 96417

This procedure involves introducing a new drug or substance into your vein, typically via an IV drip. It lasts for an hour or less. This method allows the substance to quickly reach your bloodstream, ensuring rapid and effective treatment.

627 services63 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

523 services100 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

492 services62 patients

Infusion into a vein for hydration, each additional hour 96361

This procedure involves delivering fluids directly into your vein to keep your body hydrated. It is typically done when oral hydration is insufficient. Each additional hour means more fluid is infused to ensure adequate hydration.

490 services37 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

432 services71 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

326 services57 patients

Administration of prolonged chemotherapy into vein 96416

Chemotherapy is a treatment using drugs to destroy cancer cells. Prolonged chemotherapy into a vein involves the slow infusion of these drugs directly into your bloodstream over an extended period. This method ensures a continuous and effective dose to combat your cancer cells.

254 services46 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

237 services50 patients

Infusion into a vein for therapy, prevention, or diagnosis, each additional hour 96366

This procedure involves delivering medication, fluids, or nutrients directly into your vein. This is done to treat, prevent, or diagnose various conditions. Each additional hour refers to the extended time you may need to receive these substances for optimal results.

190 services30 patients

Infusion, normal saline solution, sterile (500 ml = 1 unit) J7040

An infusion of a normal saline solution is a common medical procedure. Sterile saline (salt water) is administered into your bloodstream via a drip. This helps to maintain fluid balance in your body, especially when you're unable to drink enough liquids.

157 services29 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

150 services26 patients

Infusion, normal saline solution , 1000 cc J7030

An infusion of normal saline solution, 1000 cc, is a common medical procedure. It involves introducing a saltwater solution into your bloodstream via an intravenous (IV) line. This helps to hydrate your body, correct electrolyte imbalances, and deliver medications if needed.

139 services30 patients

Injection, diphenhydramine hcl, up to 50 mg J1200

Diphenhydramine HCL injection is a medicine given to alleviate symptoms of allergies, colds, or hay fever. It can also help with motion sickness and certain symptoms of Parkinson's disease. Up to 50 mg may be administered depending on your condition.

106 services18 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

42 services13 patients

Telephone medical discussion with physician, 5-10 minutes 99441

A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.

35 services27 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

23 services19 patients

Infusion into a vein for hydration, 31-60 minutes 96360

This is a procedure where a sterile solution is administered into your vein to help restore body fluid balance. It typically lasts between 31-60 minutes. It's a safe, common treatment for dehydration or to deliver medication.

18 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Maimonides Medical Center

Acute Care Hospitals · Brooklyn, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330194

Location4802 Tenth AvenueBrooklyn, NY 11219 · Kings County

Emergency services Birthing friendly

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330214

Location550 First AvenueNew York, NY 10016 · New York County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11206 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$203.53 typical visit price

range $67.40 – $203.53

Typical copayment $50.88 (range $16.85 – $50.88)

Most-billed visit code 99205

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

3 suppliers15 claims15 services$17.73 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. YEHUDA SCHON PMHNP

Nurse Practitioner (Psychiatric/Mental Health)

19 FAYETTE ST
BROOKLYN, NY 11206

Kings County (718) 732-4050

LAZER SILBERSTEIN

Specialist

19 FAYETTE ST
BROOKLYN, NY 11206

Kings County (718) 438-3002

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Azriel Hirschfeld's NPI number?

The NPI number for Azriel Hirschfeld is 1043240336. It was assigned to this individual provider in the NPPES registry on July 3, 2006.

Where is Azriel Hirschfeld located?

Azriel Hirschfeld practices at 19 Fayette St, Brooklyn, NY 11206. The listed phone number is (718) 732-4050.

What is Azriel Hirschfeld's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Azriel Hirschfeld enrolled in Medicare?

Yes. Azriel Hirschfeld is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Azriel Hirschfeld's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Azriel Hirschfeld reassigns Medicare benefits to 5 organizations: Azriel Hirschfeld MD PLLC (Brooklyn, NY), Maimonides Faculty Practice Plan (Brooklyn, NY), Ahava Medical And Rehabilitation Center, LLC (Brooklyn, NY), Mmc Hematology Oncology Fpp (Brooklyn, NY) and Refuah Health Center, Inc. (Spring Valley, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Azriel Hirschfeld's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Azriel Hirschfeld affiliated with any hospitals?

According to CMS data, Azriel Hirschfeld is affiliated with Maimonides Medical Center and Nyu Langone Hospitals.

When was this NPI record last updated?

The NPPES record for Azriel Hirschfeld was last updated on March 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.