William Ku, MD
Surgery Physician · Martinez, CA
William Ku, MD is a surgery physician with a practice address in Martinez, California, and NPI 1609940915, issued on Nov 20, 2006. Check the license (California G60637, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Ku
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G60637 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Muir RD, Martinez, CA 94553
- Phone
- (925) 372-1000
- Enumerated
- Nov 20, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G606370 CA
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 200 Muir RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Ku in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G60637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Ku among 3,118 surgery physician records in California
William Ku, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,118 in California → Every provider in Martinez → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Michael Bloomstein, MDMartinez, CA 945531538247614
- Eve CominosMartinez, CA 945531083784136
- Stuart FormanMartinez, CA 945531730250309
- Mauricio Kuri, MDMartinez, CA 945531811025471
- Judy Lively, MDMartinez, CA 945531083786735
- Bruce McCreery, MDMartinez, CA 945531447338546
- Venkataraman Muthusamy, M.DMartinez, CA 945531073580593
- Richard NagleMartinez, CA 945531013087915
Common questions
What is William Ku, MD's NPI number?
William Ku, MD's National Provider Identifier (NPI) is 1609940915, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Ku, MD located?
The NPPES record lists a practice address at 200 Muir RD, Martinez, CA, 94553. Phone: (925) 372-1000. Providers update this record themselves, so call before visiting.
How can I verify William Ku, MD's license?
NPPES lists California license number G60637, 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. 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.