Dr Zachary R Marwil, MD - Medicare Gastroenterology in Wantagh, NY

Dr Zachary R Marwil, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Wantagh, New York. He graduated from medical school in 2009 and has 15 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Gastrointestinal Specialist Of Long Island, P.c. and his current practice location is 3019 Merrick Rd, Wantagh, New York. You can reach out to his office (for appointments etc.) via phone at (516) 785-8075.

Dr Zachary R Marwil is licensed to practice in New York (license number 268414) 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 1609002229.

Contact Information

Dr Zachary R Marwil, MD
3019 Merrick Rd,
Wantagh, NY 11793-4329
(516) 785-8075
(516) 785-8139

Map and Direction




Physician's Profile

Full NameDr Zachary R Marwil
GenderMale
SpecialityGastroenterology
Experience15 Years
Location3019 Merrick Rd, Wantagh, 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:
  • Dr Zachary R Marwil graduated from medical school in 2009
  NPI Data:
  • NPI Number: 1609002229
  • Provider Enumeration Date: 06/10/2009
  • Last Update Date: 03/22/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 4587897376
  • Enrollment ID: I20140501001262

Medical Identifiers

Medical identifiers for Dr Zachary R Marwil such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609002229NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 268414 (New York)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gastrointestinal Specialist Of Long Island, P.c.14564420522

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 Zachary R Marwil allows following entities to bill medicare on his behalf.
Entity NamePhelps Memorial Hospital Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720185267
PECOS PAC ID: 1658283981
Enrollment ID: O20031104000490
Entity NameIsland Gastroenterology Consultants Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174556963
PECOS PAC ID: 8921999079
Enrollment ID: O20040320000328
Entity NameGastrointestinal Specialist Of Long Island, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538242565
PECOS PAC ID: 1456442052
Enrollment ID: O20070811000002

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 Zachary R Marwil 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 Zachary R Marwil, MD
3019 Merrick Rd,
Wantagh, NY 11793-4329

Ph: (516) 785-8075
Dr Zachary R Marwil, MD
3019 Merrick Rd,
Wantagh, NY 11793-4329

Ph: (516) 785-8075

Reviews and Comments


Internal Medicine Doctors in Wantagh, NY

Dr. Eric Robert Barth, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 2155 Wantagh Ave, Wantagh, NY 11793
Phone: 516-785-1200    Fax: 516-785-8969
Dr. Michael C Barth, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1488 Wantagh Ave, Wantagh, NY 11793
Phone: 516-785-6800    Fax: 516-785-2121
Eno Eucharia Akpowowo, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1136 Fortune Ct, Wantagh, NY 11793
Phone: 646-329-4139    
Phillip Moskowitz, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 1488 Wantagh Ave, Wantagh, NY 11793
Phone: 516-785-6800    Fax: 516-785-2121
Melissa Nancy Brancati, NP
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 2983 Wilson Ave, Wantagh, NY 11793
Phone: 516-225-7933    
Dr. Jordan Marc Rush, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1488 Wantagh Ave, Wantagh, NY 11793
Phone: 516-785-6800    
Dr. Jenifer Kim Kramer, MD
Gastroenterology
Medicare: May Accept Medicare Assignments
Practice Location: 3375 Park Ave, Suite 2003, Wantagh, NY 11793
Phone: 516-781-2171    Fax: 516-366-3565

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.