Marissa Mccay, MD in West Harrison, NY - Medicare Family Practice

Marissa Mccay, MD is a medicare enrolled "Internal Medicine - Sports Medicine" physician in West Harrison, New York. She graduated from medical school in 2014 and has 12 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Trustees Of Columbia University In The City Of New York and her current practice location is 1111 Westchester Ave, West Harrison, New York. You can reach out to her office (for appointments etc.) via phone at (212) 305-9137.

Marissa Mccay is licensed to practice in New York (license number 325177) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1972922441.

Contact Information

	Marissa Mccay, MD
	1111 Westchester Ave, West Harrison, NY 10604-3525
	(212) 305-9137
	(212) 304-7050

Map and Direction

Physician's Profile

Full Name	Marissa Mccay
Gender	Female
Speciality	Family Practice
Experience	12 Years
Location	1111 Westchester Ave, West Harrison, New York
Accepts Medicare Assignments	Yes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Marissa Mccay graduated from medical school in 2014

NPI Data:

NPI Number: 1972922441
Provider Enumeration Date: 04/14/2014
Last Update Date: 10/16/2025

Medicare PECOS Information:

PECOS PAC ID: 3678796133
Enrollment ID: I20240325001633

Medical Identifiers

Medical identifiers for Marissa Mccay such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1972922441	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RS0010X	Internal Medicine - Sports Medicine	325177 (New York)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
New York-presbyterian Hospital	New york, NY	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Trustees Of Columbia University In The City Of New York	8527972546	2278

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. Marissa Mccay allows following entities to bill medicare on her behalf.

Entity Name	Westchester Health Medical Pc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1386188647 PECOS PAC ID: 7315221751 Enrollment ID: O20170316000446

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. Marissa Mccay 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 Address	Practice Location Address
Marissa Mccay, MD 622 W 168th St Ph 111130, New York, NY 10032-3720 Ph: (212) 305-9137	Marissa Mccay, MD 1111 Westchester Ave, West Harrison, NY 10604-3525 Ph: (212) 305-9137

Reviews and Comments

Internal Medicine Doctors in West Harrison, NY

Dr. Elizabeth S Won, MD Internal Medicine Medicare: Medicare Enrolled Practice Location: 500 Westchester Ave, West Harrison, NY 10604 Phone: 646-888-5113
Dr. Ross Eliott Mazo, M.D Internal Medicine Medicare: May Accept Medicare Assignments Practice Location: 210 Westchester Ave, West Harrison, NY 10604 Phone: 914-681-3100
Dr. Michael Stevenson May, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 500 Westchester Ave, West Harrison, NY 10604 Phone: 917-608-3250
Dr. Alice A Zervoudakis, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 500 Westchester Ave, West Harrison, NY 10604 Phone: 917-367-7000
Fernando Costa Santini, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 500 Westchester Ave, West Harrison, NY 10604 Phone: 914-367-7000
Mili Shum, Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 222 Westchester Ave, West Harrison, NY 10604 Phone: 914-493-7585
Dr. Benoit Jean-christophe Rousseau, Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 500 Westchester Ave, West Harrison, NY 10604 Phone: 914-540-5593

Marissa Mccay, MD - Medicare Family Practice in West Harrison, NY