NPPES file of Aug 9, 2026

Stephanie Tsoi, MD

Student in an Organized Health Care Education/Training Program · San Francisco, CA

Stephanie Tsoi, MD is a student in an organized health care education/training program with a practice address in San Francisco, California, and NPI 1427554088, issued on Apr 3, 2018. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427554088
Name
Stephanie Tsoi
Credential
MD
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
Practice location
550 16TH Street, San Francisco, CA 94143
Phone
(415) 476-6245
Enumerated
Apr 3, 2018
Record last updated
Apr 3, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20250620003567); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2018
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 550 16TH Street

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Samuel Brunwasser, MD,PHDStudent in an Organized Health Care Education/Training Program1649073909
  2. Earl ChismPediatric Critical Care Medicine Physician1811630031
  3. Carlos Damas, MDPediatrics Physician1881221117
  4. Makenzie Franceschi, MDStudent in an Organized Health Care Education/Training Program1881398642
  5. Manali Ghadiali, MDStudent in an Organized Health Care Education/Training Program1447052808
  6. Cheryl HawkinsPediatrics Physician1447887252

Verify Stephanie Tsoi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Ucsf Pediatrics AssociatesSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephanie Tsoi among 40,652 student in an organized health care education/training program records in California

Stephanie Tsoi, MD is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 17% of them.

  • NPI issued2018 · 17% of these records are older, 80% newer
  • In a Medicare fileYes · 16% of these records are
  • In the CMS Doctors and Clinicians fileYes · 6% of these records are
  • Graduated2018 · median 2017 among the 2,409 with a school on file
  • Record last updated2018 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

3,035 student in an organized health care education/training program records list a practice address in San Francisco

They are 3,035 of the 38,143 NPPES records with a practice address in San Francisco, and 40,652 student in an organized health care education/training program records in California.

The 8 student in an organized health care education/training program records with the nearest ZIP codes

  1. Andrew Bellinger, M.D., PH.D.San Francisco, CA 941431831327402
  2. Molly Burnett, MDSan Francisco, CA 941431619107638
  3. Sheila Chan, M.D.San Francisco, CA 941431487895793
  4. Fred Chen, M.D.San Francisco, CA 941431932390325
  5. Jeffrey Ghassemi, M.D., M.P.H.San Francisco, CA 941431972746253
  6. Vasantha Jotwani, M.D.San Francisco, CA 941431043448996
  7. Vy-Van Le, MDSan Francisco, CA 941431265661136
  8. Katherine Naidu, M.D.San Francisco, CA 941431265668115

Common questions

What is Stephanie Tsoi, MD's NPI number?

Stephanie Tsoi, MD's National Provider Identifier (NPI) is 1427554088, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Stephanie Tsoi, MD located?

The NPPES record lists a practice address at 550 16TH Street, San Francisco, CA, 94143. Phone: (415) 476-6245. Providers update this record themselves, so call before visiting.

How can I verify Stephanie Tsoi, MD's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.