NPPES file of Aug 9, 2026

Cynthia Siu-San Yuan, MD

Anesthesiology Physician · San Jose, CA

Cynthia Siu-San Yuan, MD is an anesthesiology physician with a practice address in San Jose, California, and NPI 1679798185, issued on Apr 17, 2007. Check the license (California C157744, as entered in NPPES) on the Medical Board of California; 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
1679798185
Name
Cynthia Siu-San Yuan
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
C157744 CA
01063859 IN
Self-reported in NPPES; status is on the state search
Practice location
2425 Samaritan Dr, San Jose, CA 95124
Phone
(408) 399-5546
Enumerated
Apr 17, 2007
Record last updated
Feb 21, 2022
Medicaid ID
200875140 IN
Medicare enrollment
Enrolled (PECOS I20211221001950); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 2002
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 2425 Samaritan Dr

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

  1. Ligia Abohande, FNPFamily Nurse Practitioner1083126684
  2. Audrey Adams, MDAnesthesiology Physician1023045697
  3. Ravi Aggu Sher, MDCritical Care Medicine (Internal Medicine) Physician1285898585
  4. Keyvan Bahadi, MDSurgery Physician1376595314
  5. Rodney Baker, MDAnesthesiology Physician1912934621
  6. Ali Bassiri, MDPulmonary Disease Physician1316010275

Verify Cynthia Siu-San Yuan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C157744
    Check 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
Open 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. G2 Anesthesia PCSan Jose, CA

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

Cynthia Siu-San Yuan among 7,571 anesthesiology physician records in California

Cynthia Siu-San Yuan, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.

  • NPI issued2007 · 47% of these records are older, 43% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2002 · median 2006 among the 4,868 with a school on file
  • Record last updated2022 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in California

There are 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Audrey Adams, MDSan Jose, CA 951241023045697
  2. Rodney Baker, MDSan Jose, CA 951241912934621
  3. Steven Block, MDSan Jose, CA 951241508895962
  4. Anthony Bommarito, MDSan Jose, CA 951241164458725
  5. Richard Briones, MDSan Jose, CA 951241518993047
  6. Debra Cellar, MDSan Jose, CA 951241992731384
  7. John Cellar, MDSan Jose, CA 951241073549473
  8. Rodney Clark, MDSan Jose, CA 951241790716041

Common questions

What is Cynthia Siu-San Yuan, MD's NPI number?

Cynthia Siu-San Yuan, MD's National Provider Identifier (NPI) is 1679798185, issued on Apr 17, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Cynthia Siu-San Yuan, MD located?

The NPPES record lists a practice address at 2425 Samaritan Dr, San Jose, CA, 95124. Phone: (408) 399-5546. Providers update this record themselves, so call before visiting.

How can I verify Cynthia Siu-San Yuan, MD's license?

NPPES lists California license number C157744, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.