Dr Anne Maria Grzegorczyk, MD in Walnut Creek, CA

Dr Anne Maria Grzegorczyk, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Walnut Creek, California. Her current practice location is 2700 Ygnacio Valley Rd Ste 100, Walnut Creek, California. You can reach out to her office (for appointments etc.) via phone at (925) 939-3050.

Dr Anne Maria Grzegorczyk is licensed to practice in California (license number A154982) 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 1720434004.

Contact Information

	Dr Anne Maria Grzegorczyk, MD
	2700 Ygnacio Valley Rd Ste 100, Walnut Creek, CA 94598-3462
	(925) 939-3050
	Not Available

Map and Direction

Physician's Profile

Full Name	Dr Anne Maria Grzegorczyk
Gender	Female
Speciality	Internal Medicine - Pulmonary Disease
Location	2700 Ygnacio Valley Rd Ste 100, Walnut Creek, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1720434004
Provider Enumeration Date: 05/05/2016
Last Update Date: 04/22/2024

Medicare PECOS Information:

PECOS PAC ID: 4284062324
Enrollment ID: I20200324000186

Medical Identifiers

Medical identifiers for Dr Anne Maria Grzegorczyk such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1720434004	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RC0200X	Internal Medicine - Critical Care Medicine	A154982 (California)	Secondary
207RP1001X	Internal Medicine - Pulmonary Disease	A154982 (California)	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. Dr Anne Maria Grzegorczyk allows following entities to bill medicare on her behalf.

Entity Name	Muir Pulmonary Critical Care
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1245225861 PECOS PAC ID: 3476449943 Enrollment ID: O20040223001277

Entity Name	John Muir Trauma Physicians Billing Service
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1093864837 PECOS PAC ID: 3476542515 Enrollment ID: O20050420001452

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 Anne Maria Grzegorczyk 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
Dr Anne Maria Grzegorczyk, MD 2700 Ygnacio Valley Rd Ste 100, Walnut Creek, CA 94598-3462 Ph: (925) 939-3050	Dr Anne Maria Grzegorczyk, MD 2700 Ygnacio Valley Rd Ste 100, Walnut Creek, CA 94598-3462 Ph: (925) 939-3050

Reviews and Comments

Internal Medicine Doctors in Walnut Creek, CA

Dr. Joseph Patrick Henry, M.D. Pulmonary Disease Medicare: May Accept Medicare Assignments Practice Location: 2645 Snyder Ct, Walnut Creek, CA 94598 Phone: 510-409-6511 Fax: 719-941-8247
Mr. Ramin Khashayar, MD Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 1399 Ygnacio Valley Rd, Ste 14, Walnut Creek, CA 94598 Phone: 925-939-3050 Fax: 925-939-3057
Dr. Hennessey Tseng, M.D. Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 1450 Treat Blvd, Suite 220b, Walnut Creek, CA 94597 Phone: 925-937-1770 Fax: 925-937-0630
Dr. Ali-reza Barmaki, M.D. Pulmonary Disease Medicare: May Accept Medicare Assignments Practice Location: 1220 Rossmoor Pkwy, Walnut Creek, CA 94595 Phone: 925-947-3393 Fax: 925-947-3396
Dr. Cynthia M. Mullen, M.D. Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 2637 Shadelands Dr, Walnut Creek, CA 94598 Phone: 925-322-2372 Fax: 925-322-6720
Mr. David Nathanson, Pulmonary Disease Medicare: Medicare Enrolled Practice Location: 320 Lennon Ln, Walnut Creek, CA 94598 Phone: 925-906-2000
Mark D Nathan, MD Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 106 La Casa Via, #140, Walnut Creek, CA 94598 Phone: 925-274-2860 Fax: 925-932-4527

Dr Anne Maria Grzegorczyk, MD - Medicare Internal Medicine in Walnut Creek, CA