Dr Geraldine Gan Tan, MD in Walnut Creek, CA

Dr Geraldine Gan Tan, MD is a medicare enrolled "Hospitalist" physician in Walnut Creek, California. Her current practice location is 1220 Rossmoor Pkwy, Walnut Creek, California. You can reach out to her office (for appointments etc.) via phone at (925) 947-3393.

Dr Geraldine Gan Tan is licensed to practice in California (license number A81859) 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 1699744086.

Contact Information

	Dr Geraldine Gan Tan, MD
	1220 Rossmoor Pkwy, Walnut Creek, CA 94595-2501
	(925) 947-3393
	(925) 947-3396

Map and Direction

Physician's Profile

Full Name	Dr Geraldine Gan Tan
Gender	Female
Speciality	Hospitalist
Location	1220 Rossmoor Pkwy, 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: 1699744086
Provider Enumeration Date: 03/16/2006
Last Update Date: 09/29/2015

Medicare PECOS Information:

PECOS PAC ID: 8628060431
Enrollment ID: I20040928000701

Medical Identifiers

Medical identifiers for Dr Geraldine Gan Tan such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1699744086	NPI	-	NPPES
P01495634	Other	CA	RAILROAD MEDICARE
00A818590	Medicaid	CA

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	A81859 (California)	Secondary
208M00000X	Hospitalist	A81859 (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 Geraldine Gan Tan allows following entities to bill medicare on her behalf.

Entity Name	John Muir Physician Network
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1841407665 PECOS PAC ID: 6608789813 Enrollment ID: O20031226000143

Entity Name	Inpatient Consultants Of California Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1831134253 PECOS PAC ID: 7618861501 Enrollment ID: O20040211000804

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 Geraldine Gan Tan 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 Geraldine Gan Tan, MD Dept 34929, P.o. Box 39000, San Francisco, CA 94139-0001 Ph: (925) 952-2828	Dr Geraldine Gan Tan, MD 1220 Rossmoor Pkwy, Walnut Creek, CA 94595-2501 Ph: (925) 947-3393

Reviews and Comments

Hospitalist Doctors in Walnut Creek, CA

Dr. Niceto Lopez, MD Hospitalist Medicare: Accepting Medicare Assignments Practice Location: 801 Ygnacio Valley Rd, Suite 250, Walnut Creek, CA 94596 Phone: 925-946-1080
Dr. Thomas Cresante, D.O. Hospitalist Medicare: Accepting Medicare Assignments Practice Location: 1425 S Main St, Kaiser Permanente Walnut Creek Attn: Hbs Dept, Walnut Creek, CA 94596 Phone: 925-295-4643
Maria L. Domantay, MD Hospitalist Medicare: Not Enrolled in Medicare Practice Location: 1425 S Main St, Walnut Creek, CA 94596 Phone: 925-295-4000
Tsao-yu Liang, MD Hospitalist Medicare: Accepting Medicare Assignments Practice Location: 1425 S Main St, Walnut Creek, CA 94596 Phone: 925-295-4000
Rujuta J. Manghani, MD Hospitalist Medicare: Accepting Medicare Assignments Practice Location: 1450 Treat Blvd, Ste 160, Walnut Creek, CA 94597 Phone: 925-296-9000
Timothy P. Corfman, MD Hospitalist Medicare: Not Enrolled in Medicare Practice Location: 1425 S Main St, Walnut Creek, CA 94596 Phone: 925-295-4000
John Y. Kim, MD Hospitalist Medicare: Accepting Medicare Assignments Practice Location: 1425 S Main St, Walnut Creek, CA 94596 Phone: 925-295-4000

Dr Geraldine Gan Tan, MD - Medicare Hospitalist in Walnut Creek, CA