Monica Nicole Gaines Stiles, DO in Walnut Creek, CA

Monica Nicole Gaines Stiles, DO is a medicare enrolled "Hospitalist" physician in Walnut Creek, California. She graduated from medical school in 2020 and has 6 years of diverse experience with area of expertise as Hospitalist. She is a member of the group practice John Muir Physician Network and her current practice location is 1601 Ygnacio Valley Rd, Walnut Creek, California. You can reach out to her office (for appointments etc.) via phone at (925) 947-3393.

Monica Nicole Gaines Stiles is licensed to practice in California (license number 20A20496) 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 1811524507.

Contact Information

	Monica Nicole Gaines Stiles, DO
	1601 Ygnacio Valley Rd, Walnut Creek, CA 94598-3122
	(925) 947-3393
	(925) 947-3396

Map and Direction

Physician's Profile

Full Name	Monica Nicole Gaines Stiles
Gender	Female
Speciality	Hospitalist
Experience	6 Years
Location	1601 Ygnacio Valley Rd, Walnut Creek, California
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:

Monica Nicole Gaines Stiles graduated from medical school in 2020

NPI Data:

NPI Number: 1811524507
Provider Enumeration Date: 03/24/2020
Last Update Date: 06/18/2026

Medicare PECOS Information:

PECOS PAC ID: 8123472248
Enrollment ID: I20230922003207

Medical Identifiers

Medical identifiers for Monica Nicole Gaines Stiles such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1811524507	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
208M00000X	Hospitalist	20A20496 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
John Muir Medical Center - Concord Campus	Concord, CA	Hospital
John Muir Medical Center - Walnut Creek Campus	Walnut creek, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
John Muir Physician Network	6608789813	488

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. Monica Nicole Gaines Stiles 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	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. Monica Nicole Gaines Stiles 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
Monica Nicole Gaines Stiles, DO 1450 Treat Blvd Ste 300, Walnut Creek, CA 94597-2168 Ph: (925) 952-2828	Monica Nicole Gaines Stiles, DO 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598-3122 Ph: (925) 947-3393

Reviews and Comments

Hospitalist Doctors in Walnut Creek, CA

Dr. Niceto Lopez, MD Hospitalist Medicare: Medicare Enrolled 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
Dr. Abraham K Chung, M.D. Hospitalist Medicare: Accepting Medicare Assignments Practice Location: 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 Phone: 925-947-3393 Fax: 925-947-3396
Timothy P. Corfman, MD Hospitalist Medicare: Not Enrolled in Medicare Practice Location: 1425 S Main St, Walnut Creek, CA 94596 Phone: 925-295-4000

Monica Nicole Gaines Stiles, DO - Medicare Hospitalist in Walnut Creek, CA