Margaret Op Fallon, MD in Waltham, MA

Margaret Op Fallon, MD is a medicare enrolled "Pediatrics" physician in Waltham, Massachusetts. Her current practice location is 52 Second Ave, Waltham, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (617) 726-2000.

Margaret Op Fallon is licensed to practice in Massachusetts (license number 271340) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1780104968.

Contact Information

	Margaret Op Fallon, MD
	52 Second Ave, Waltham, MA 02451-1127
	(617) 726-2000
	Not Available

Map and Direction

Physician's Profile

Full Name	Margaret Op Fallon
Gender	Female
Speciality	Pediatrics
Location	52 Second Ave, Waltham, Massachusetts
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1780104968
Provider Enumeration Date: 06/20/2017
Last Update Date: 04/21/2025

Medicare PECOS Information:

PECOS PAC ID: 4183998131
Enrollment ID: I20200903001050

Medical Identifiers

Medical identifiers for Margaret Op Fallon such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1780104968	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
208000000X	Pediatrics	271340 (Massachusetts)	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. Margaret Op Fallon allows following entities to bill medicare on her behalf.

Entity Name	Massachusetts General Physicians Organization Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1801874573 PECOS PAC ID: 2466365820 Enrollment ID: O20031111000434

Entity Name	The General Hospital Corporation
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1023049236 PECOS PAC ID: 6507803806 Enrollment ID: O20080313000351

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. Margaret Op Fallon 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
Margaret Op Fallon, MD 55 Fruit St, Boston, MA 02114-2621 Ph: (617) 726-2000	Margaret Op Fallon, MD 52 Second Ave, Waltham, MA 02451-1127 Ph: (617) 726-2000

Reviews and Comments

Pediatrics Doctors in Waltham, MA

Dr. Robert D Fusunyan, MD Pediatrics Medicare: Not Enrolled in Medicare Practice Location: 40 2nd Avenue, Suite 340, Waltham, MA 02451 Phone: 781-466-8967 Fax: 781-466-8987
Dr. Beth Ann Mccabe, MD Pediatrics Medicare: Not Enrolled in Medicare Practice Location: 40 2nd Ave, Suite 400, Waltham, MA 02451 Phone: 781-522-9000 Fax: 617-735-9098
Cynthia Sacco, M.D. Pediatrics Medicare: Not Enrolled in Medicare Practice Location: 245 Winter St, Waltham, MA 02451 Phone: 781-419-2709
Myron B Peterson, M.D. Pediatrics Medicare: Not Enrolled in Medicare Practice Location: Cato Ltd., 1100 Winter Street, Waltham, MA 02451 Phone: 617-484-2297
Dr. Peter Tebet Greenspan, MD Pediatrics Medicare: Medicare Enrolled Practice Location: 40 2nd Ave, Mass General West Medical Group Ste 400, Waltham, MA 02451 Phone: 781-487-4340 Fax: 781-487-4341
Dr. Sarah Pritchett Zimmerman, MD Pediatrics Medicare: Medicare Enrolled Practice Location: 40 2nd Ave Ste 400, Waltham, MA 02451 Phone: 781-487-4340
James I Goldston, MD Pediatrics Medicare: Not Enrolled in Medicare Practice Location: 42 Weston St Ste 2a, Waltham, MA 02453 Phone: 781-747-8480 Fax: 949-577-4121

Margaret Op Fallon, MD - Medicare Pediatrics in Waltham, MA