Dr Marcellus Andre Walker, MD - Medicare Internal Medicine in Brooklyn, NY

Dr Marcellus Andre Walker, MD is a medicare enrolled "Internal Medicine" physician in Brooklyn, New York. He went to Loyola University Of Chicago, Stritch School Of Medicine and graduated in 1978 and has 46 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice City Medical Of Upper East Side Pllc and his current practice location is 2094 Pitkin Ave, Brooklyn, New York. You can reach out to his office (for appointments etc.) via phone at (718) 240-0516.

Dr Marcellus Andre Walker is licensed to practice in New York (license number 189578A) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1003038274.

Contact Information

Dr Marcellus Andre Walker, MD
2094 Pitkin Ave,
Brooklyn, NY 11207-3509
(718) 240-0516
(718) 240-0564

Map and Direction




Physician's Profile

Full NameDr Marcellus Andre Walker
GenderMale
SpecialityInternal Medicine
Experience46 Years
Location2094 Pitkin Ave, Brooklyn, New York
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Marcellus Andre Walker attended and graduated from Loyola University Of Chicago, Stritch School Of Medicine in 1978
  NPI Data:
  • NPI Number: 1003038274
  • Provider Enumeration Date: 05/03/2007
  • Last Update Date: 12/08/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 5395929830
  • Enrollment ID: I20110407000812

Medical Identifiers

Medical identifiers for Dr Marcellus Andre Walker such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003038274NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD039838E (Pennsylvania)Secondary
207R00000XInternal Medicine 189578A (New York)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
City Medical Of Upper East Side Pllc0648465039759

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. Dr Marcellus Andre Walker allows following entities to bill medicare on his behalf.
Entity NameBrooklyn Center For Psychotherapy, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275516213
PECOS PAC ID: 9436041621
Enrollment ID: O20040324001708
Entity NameCity Medical Of Upper East Side Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801277629
PECOS PAC ID: 0648465039
Enrollment ID: O20101111000052

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. Dr Marcellus Andre Walker 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
Dr Marcellus Andre Walker, MD
220 E 26th St, Suite 1b,
New York, NY 10010-2417

Ph: (914) 671-2775
Dr Marcellus Andre Walker, MD
2094 Pitkin Ave,
Brooklyn, NY 11207-3509

Ph: (718) 240-0516

Reviews and Comments


Internal Medicine Doctors in Brooklyn, NY

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