Brian Flaherty, MD - Medicare Hematology/oncology in Brooklyn, NY

Brian Flaherty, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Brooklyn, New York. He graduated from medical school in 1985 and has 39 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice New York University and his current practice location is 9920 4th Ave, Brooklyn, New York. You can reach out to his office (for appointments etc.) via phone at (718) 921-1672.

Brian Flaherty is licensed to practice in New York (license number 175318) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1083666846.

Contact Information

Brian Flaherty, MD
9920 4th Ave,
Brooklyn, NY 11209-8333
(718) 921-1672
Not Available

Map and Direction




Physician's Profile

Full NameBrian Flaherty
GenderMale
SpecialityHematology/oncology
Experience39 Years
Location9920 4th Ave, Brooklyn, New York
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Brian Flaherty graduated from medical school in 1985
  NPI Data:
  • NPI Number: 1083666846
  • Provider Enumeration Date: 05/17/2006
  • Last Update Date: 03/30/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 6406982057
  • Enrollment ID: I20100428000334

Medical Identifiers

Medical identifiers for Brian Flaherty such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1083666846NPI-NPPES
01780689MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 175318 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
New York University Langone Medical CenterNew york, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
New York University13552324224495

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Brian Flaherty allows following entities to bill medicare on his behalf.
Entity NameLmc Physician Services, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346256104
PECOS PAC ID: 5890686695
Enrollment ID: O20040322001477
Entity NameCalvary Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003858390
PECOS PAC ID: 9133010382
Enrollment ID: O20040324001430
Entity NameNew York University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285826438
PECOS PAC ID: 1355232422
Enrollment ID: O20090822000026

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Brian Flaherty is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Brian Flaherty, MD
9920 4th Ave,
Brooklyn, NY 11209-8333

Ph: (718) 921-1672
Brian Flaherty, MD
9920 4th Ave,
Brooklyn, NY 11209-8333

Ph: (718) 921-1672

Reviews and Comments


Internal Medicine Doctors in Brooklyn, NY

Dr. Alexander Usorov, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 447 Atlantic Ave, Brooklyn, NY 11217
Phone: 718-858-6300    
Dr. Marcellus Andre Walker, MD
Hematology & Oncology
Medicare: May Accept Medicare Assignments
Practice Location: 2094 Pitkin Ave, Brooklyn, NY 11207
Phone: 718-240-0516    Fax: 718-240-0564
Lotus Ahmed, D.O
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 518 Mcdonald Ave, Brooklyn, NY 11218
Phone: 917-848-5432    Fax: 347-252-6754
Mrs. Sophia Schwartzman, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 2700 Ocean Avenue, Brooklyn, NY 11229
Phone: 518-587-1141    
Dr. Haitham M Ahmed, MD, MPH
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 101 Pennsylvania Avenue, Brooklyn, NY 11207
Phone: 718-240-2000    Fax: 718-240-2260
Yanjin Yang,
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 506 6th St, Brooklyn, NY 11215
Phone: 718-780-3000    
Ashwad Afzal, M.D.
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 506 6th St, Brooklyn, NY 11215
Phone: 718-780-5246    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.