Yair Yonatan Keilson, MD - Medicare Hematology/oncology in Brooklyn, NY

Yair Yonatan Keilson, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Brooklyn, New York. He went to State University Of New York Downstate Medical Center and graduated in 2005 and has 19 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 902 Quentin Rd, Brooklyn, New York. You can reach out to his office (for appointments etc.) via phone at (917) 736-9740.

Yair Yonatan Keilson is licensed to practice in New York (license number 242397) 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 1861601197.

Contact Information

Yair Yonatan Keilson, MD
902 Quentin Rd,
Brooklyn, NY 11223-2214
(917) 736-9740
Not Available

Map and Direction




Physician's Profile

Full NameYair Yonatan Keilson
GenderMale
SpecialityHematology/oncology
Experience19 Years
Location902 Quentin Rd, 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:
  • Yair Yonatan Keilson attended and graduated from State University Of New York Downstate Medical Center in 2005
  NPI Data:
  • NPI Number: 1861601197
  • Provider Enumeration Date: 05/22/2007
  • Last Update Date: 03/23/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5395899215
  • Enrollment ID: I20090812000154

Medical Identifiers

Medical identifiers for Yair Yonatan Keilson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1861601197NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 242397 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
New York University Langone Medical CenterNew york, NYHospital
St Francis Hospital - The Heart CenterRoslyn, NYHospital
North Shore University HospitalManhasset, NYHospital
Mount Sinai Beth IsraelNew 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. Yair Yonatan Keilson allows following entities to bill medicare on his behalf.
Entity NameMaimonides Pain Management Fpp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346354370
PECOS PAC ID: 7315962586
Enrollment ID: O20051007000206
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. Yair Yonatan Keilson 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
Yair Yonatan Keilson, MD
200 Boundary Ave, Suite 200,
Massapequa, NY 11758-1152

Ph: (516) 755-2404
Yair Yonatan Keilson, MD
902 Quentin Rd,
Brooklyn, NY 11223-2214

Ph: (917) 736-9740

Reviews and Comments


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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.

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