Marc Fenster, MD - Medicare Internal Medicine in Cedarhurst, NY

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Marc Fenster, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Cedarhurst, New York. His current practice location is 657 Central Ave, Cedarhurst, New York. You can reach out to his office (for appointments etc.) via phone at (516) 374-5570.

Marc Fenster is licensed to practice in New York (license number 302653) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1144751595.

Contact Information

Marc Fenster, MD
657 Central Ave,
Cedarhurst, NY 11516-2320
(516) 374-5570
Not Available

Map and Direction




Physician's Profile

Full NameMarc Fenster
GenderMale
SpecialityInternal Medicine - Gastroenterology
Location657 Central Ave, Cedarhurst, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1144751595
  • Provider Enumeration Date: 03/27/2017
  • Last Update Date: 08/23/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6305186156
  • Enrollment ID: I20230601002124

Medical Identifiers

Medical identifiers for Marc Fenster such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144751595NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 302653 (New York)Primary

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. Marc Fenster allows following entities to bill medicare on his behalf.
Entity NameSt John's Medical Services Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023042173
PECOS PAC ID: 1850314865
Enrollment ID: O20060105000203
Entity NameFive Towns Gastroenterology
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841608601
PECOS PAC ID: 2668690470
Enrollment ID: O20140820000339

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. Marc Fenster 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
Marc Fenster, MD
657 Central Ave,
Cedarhurst, NY 11516-2320

Ph: (516) 374-5570		Marc Fenster, MD
657 Central Ave,
Cedarhurst, NY 11516-2320

Ph: (516) 374-5570

Reviews and Comments


Internal Medicine Doctors in Cedarhurst, NY

Dr. Jonathan Zinberg, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 657 Central Ave, Cedarhurst, NY 11516
Phone: 516-374-0670    Fax: 516-295-0648
Boris Serebryansky, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 91a Carman Ave, Cedarhurst, NY 11516
Phone: 516-569-1617    Fax: 516-569-3057
Dr. Carl Bertram Friedman, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 123 Maple Ave, Ste 203, Cedarhurst, NY 11516
Phone: 516-374-1818    Fax: 516-374-1830
Dr. Jay Samuel Fenster, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 657 Central Ave, Cedarhurst, NY 11516
Phone: 516-374-0670    Fax: 516-295-0648
Jonathan Klahr, MD
Gastroenterology
Medicare: May Accept Medicare Assignments
Practice Location: 660 Central Ave, Cedarhurst, NY 11516
Phone: 516-374-7122    Fax: 516-374-4088
Howard Rosenfeld, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 123 Grove Ave, Suite 102, Cedarhurst, NY 11516
Phone: 516-374-0700    Fax: 516-374-8934

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.