npidata.org
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbyPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs Specialties States API

Search › California › Internal Medicine Physician

Chelsea Thomsen, M.D., M.S.P.H

NPI 1003227927 · on the registry since 2014

Practice

Address
2 W Portal Ave
San Francisco, CA 94127
Phone
(415) 291-0480
Fax
(415) 252-7176
Clinicians at this address
7

Additional practice sites

  • 1998 Market St, San Francisco, CA

Registry record

Primary taxonomy
Internal Medicine Physician
207R00000X
Also registered as
Internal Medicine Physician
Licence states on file
AZ, CA
From the registry's licence fields, which are often incomplete.
Sex
Female
Record last updated
2025-03-14

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California