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



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
North Shore University HospitalManhasset, NYHospital
Mount Sinai Beth IsraelNew york, NYHospital
St Francis Hospital - The Heart CenterRoslyn, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
New York University13552324224431

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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

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Entity NameNew York University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285826438
PECOS PAC ID: 1355232422
Enrollment ID: O20090822000026

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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

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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    

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