NPPES file of Aug 9, 2026

John Yeuk Hon Siu, M.D.

Anesthesiology Physician · Walnut Creek, CA

John Yeuk Hon Siu, M.D. is an anesthesiology physician with a practice address in Walnut Creek, California, and NPI 1922323492, issued on Mar 29, 2010. Check the license (California A135545, 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 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1922323492
Name
John Yeuk Hon Siu
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
A135545 CA
MD451510 PA
Self-reported in NPPES; status is on the state search
Practice location
2175 N California Blvd Ste 425, Walnut Creek, CA 94596
Phone
(925) 543-0140
Enumerated
Mar 29, 2010
Record last updated
Dec 9, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20150821014762); accepts Medicare assignment
Medical or professional school
University Of Wisconsin School Of Medicine, 2010
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 2175 N California Blvd Ste 425

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

  1. Jorge Aguilar, M.D.Anesthesiology Physician1275777641
  2. Ryan Green, M.D., PH.D.Anesthesiology Physician1730375791
  3. David HaAnesthesiology Physician1629452099
  4. David Lin, M.D.Anesthesiology Physician1649537838
  5. Young Sin Lin, M.D.Anesthesiology Physician1457514176
  6. George Liu, M.D.Anesthesiology Physician1730142571

Verify John Yeuk Hon Siu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A135545
    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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The MIPS final score for 2023 (Medicare payment program): 71.4 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score88.3
  2. Costout of 100 · 30%69.5
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $47.85

2 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Siu$47.85
  2. Specialty average$669.59

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Cep America - Anesthesia PCRedwood City, CA

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

John Yeuk Hon Siu among 7,571 anesthesiology physician records in California

John Yeuk Hon Siu, M.D. 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 2010, is newer than 65% of them.

  • NPI issued2010 · 65% of these records are older, 32% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2010 · median 2006 among the 4,868 with a school on file
  • Record last updated2019 · 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).

100 anesthesiology physician records list a practice address in Walnut Creek

They are 100 of the 6,170 NPPES records with a practice address in Walnut Creek, and 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Ralph Berten, MDWalnut Creek, CA 945961235217316
  2. Thomas Burns, MDWalnut Creek, CA 945961700964863
  3. Edward Cha, M.D.Walnut Creek, CA 945961750358800
  4. Steven Chang, M.D.Walnut Creek, CA 945961427090414
  5. Parminder Chopra, MDWalnut Creek, CA 945961619055787
  6. Michael Ennis, MDWalnut Creek, CA 945961205914363
  7. Dennis Fua, M.D.Walnut Creek, CA 945961427031335
  8. Michael Hernandez, MDWalnut Creek, CA 945961790732527

Common questions

What is John Yeuk Hon Siu, M.D.'s NPI number?

John Yeuk Hon Siu, M.D.'s National Provider Identifier (NPI) is 1922323492, issued on Mar 29, 2010. An NPI identifies a provider in billing; it is not a license.

Where is John Yeuk Hon Siu, M.D. located?

The NPPES record lists a practice address at 2175 N California Blvd Ste 425, Walnut Creek, CA, 94596. Phone: (925) 543-0140. Providers update this record themselves, so call before visiting.

How can I verify John Yeuk Hon Siu, M.D.'s license?

NPPES lists California license number A135545, 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.

What is John Yeuk Hon Siu, M.D.'s MIPS final score?

The 2023 MIPS final score is 71.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.