Kenneth Lloyd Williams, D.O.
Family Medicine Physician · Irvine, CA
Kenneth Lloyd Williams, D.O. is a family medicine physician with a practice address in Irvine, California, and NPI 1174541288, issued on Jul 17, 2006. Check the license (California 20A5021, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kenneth Lloyd Williams
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A5021 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15785 Laguna Canyon RD., Irvine, CA 92618
- Phone
- (949) 333-2999
- Enumerated
- Jul 17, 2006
- Record last updated
- Jan 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (949) 387-2002
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Kenneth Lloyd Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
112 Medicare Part D claims for 21 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Minoxidil16 claims
- Acetaminophen-Codeine14 claims
- Atorvastatin Calcium11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Kenneth Lloyd Williams among 17,133 family medicine physician records in California
Kenneth Lloyd Williams, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
148 family medicine physician records list a practice address in Irvine
They are 148 of the 7,778 NPPES records with a practice address in Irvine, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Irvine → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Albert Chang, M.D.Irvine, CA 926181790755569
- Anh Dinh, MDIrvine, CA 926181790775971
- Firoozeh Jahroumi, M.D.Irvine, CA 926181053310946
- Suzanne Kim, MDIrvine, CA 926181295795508
- Ronald Lee, MDIrvine, CA 926181417954306
- Thuy Nguyen, D.O.Irvine, CA 926181386688471
- Alan Nili, D.O.Irvine, CA 926181356366835
- Bradley Noon, M.D.Irvine, CA 926181740209014
Common questions
What is Kenneth Lloyd Williams, D.O.'s NPI number?
Kenneth Lloyd Williams, D.O.'s National Provider Identifier (NPI) is 1174541288, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Lloyd Williams, D.O. located?
The NPPES record lists a practice address at 15785 Laguna Canyon RD., Irvine, CA, 92618. Phone: (949) 333-2999. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Lloyd Williams, D.O.'s license?
NPPES lists California license number 20A5021, 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.
How much does Kenneth Lloyd Williams, D.O. prescribe under Medicare Part D?
In 2024, Kenneth Lloyd Williams, D.O. had 112 Medicare Part D claims for 21 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions 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.