Dr Chelsea Joy Thomsen, MD, MSPH in San Francisco, CA

Dr Chelsea Joy Thomsen, MD, MSPH is a medicare enrolled "Internal Medicine" physician in San Francisco, California. She went to University Of Arizona College Of Medicine and graduated in 2014 and has 11 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice One Medical Group Inc and her current practice location is 2 W Portal Ave, San Francisco, California. You can reach out to her office (for appointments etc.) via phone at (415) 291-0480.

Dr Chelsea Joy Thomsen is licensed to practice in California (license number A170520) 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 1003227927.

Contact Information

	Dr Chelsea Joy Thomsen, MD, MSPH
	2 W Portal Ave, San Francisco, CA 94127-1304
	(415) 291-0480
	(415) 252-7176

Map and Direction

Physician's Profile

Full Name	Dr Chelsea Joy Thomsen
Gender	Female
Speciality	Internal Medicine
Experience	11 Years
Location	2 W Portal Ave, San Francisco, 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:

Dr Chelsea Joy Thomsen attended and graduated from University Of Arizona College Of Medicine in 2014

NPI Data:

NPI Number: 1003227927
Provider Enumeration Date: 05/13/2014
Last Update Date: 03/14/2025

Medicare PECOS Information:

PECOS PAC ID: 7810116662
Enrollment ID: I20211213001196

Medical Identifiers

Medical identifiers for Dr Chelsea Joy Thomsen such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1003227927	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	50576 (Arizona)	Secondary
207R00000X	Internal Medicine	A170520 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
California Pacific Medical Center- Van Ness Campus	San francisco, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
One Medical Group Inc	2567623739	336

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 Chelsea Joy Thomsen allows following entities to bill medicare on her behalf.

Entity Name	One Medical Group Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1467781641 PECOS PAC ID: 2567623739 Enrollment ID: O20120416000113

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 Chelsea Joy Thomsen 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 Chelsea Joy Thomsen, MD, MSPH 1 Embarcadero Ctr Ste 1900, San Francisco, CA 94111-3723 Ph: (415) 658-6791	Dr Chelsea Joy Thomsen, MD, MSPH 2 W Portal Ave, San Francisco, CA 94127-1304 Ph: (415) 291-0480

Reviews and Comments

Internal Medicine Doctors in San Francisco, CA

Joseph Li-han Yang, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 505 Parnassus Ave, San Francisco, CA 94143 Phone: 415-476-1000
Dr. Pratyusha Kishore Narra, MBBS Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 3490 California St, San Francisco, CA 94118 Phone: 415-514-6200 Fax: 415-514-6410
Christine Soran, Internal Medicine Medicare: Medicare Enrolled Practice Location: 1001 Potrero Ave, Bldg 10, 3rd Floor, Ward 13, Ucsf Division Of General Internal Medicine Sfgh, San Francisco, CA 94110 Phone: 415-206-5164 Fax: 415-206-5586
Stephen Norris Cohen, MD Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 40 Ventura Ave, San Francisco, CA 94116 Phone: 415-681-2171 Fax: 415-681-2171
Dr. Claudio Andres Bravo Carrillo, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 505 Parnassus Ave, San Francisco, CA 94143 Phone: 415-502-4243 Fax: 415-502-0243
Mauricio Jalife Bucay, M.D Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 505 Parnassus Ave, San Francisco, CA 94143 Phone: 415-750-4994 Fax: 415-750-8156

Dr Chelsea Joy Thomsen, MD, MSPH - Medicare Internal Medicine in San Francisco, CA