William Touchstone Clayton, MD
Obstetrics & Gynecology Physician · Newport Beach, CA
William Touchstone Clayton, MD is an obstetrics & gynecology physician with a practice address in Newport Beach, California, and NPI 1366525586, issued on Oct 23, 2006. Check the license (California G048202, 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 Touchstone Clayton
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G048202 CA
Self-reported in NPPES; status is on the state search - Practice location
- 351 Hospital Road, Newport Beach, CA 92663
- Phone
- (949) 646-2800
- Enumerated
- Oct 23, 2006
- Record last updated
- Jul 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (949) 646-8147
- Medicaid ID
- 00G482021 CA
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 351 Hospital Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anne Walsh, P.A.Medical Physician Assistant1881811545
Verify William Touchstone Clayton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G048202Check 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 Touchstone Clayton among 5,088 obstetrics & gynecology physician records in California
William Touchstone Clayton, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileNo · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2010 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,088 in California → Every provider in Newport Beach → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Richard Agnew, MD OB GYNNewport Beach, CA 926631629089206
- Bernard Feldman, M.DNewport Beach, CA 926631558380048
- Rhonda Flora, M.D.Newport Beach, CA 926631720160583
- Deborah Grouse, MDNewport Beach, CA 926631669408076
- Chai-Lin Hsu, M.D.Newport Beach, CA 926631336191386
- Lisa Karamardian, M.D.Newport Beach, CA 926631922053644
- Patricia Keresztes-Korber, M.DNewport Beach, CA 926631780616805
- Jennifer Lee, M.DNewport Beach, CA 926631386676294
Common questions
What is William Touchstone Clayton, MD's NPI number?
William Touchstone Clayton, MD's National Provider Identifier (NPI) is 1366525586, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Touchstone Clayton, MD located?
The NPPES record lists a practice address at 351 Hospital Road, Newport Beach, CA, 92663. Phone: (949) 646-2800. Providers update this record themselves, so call before visiting.
How can I verify William Touchstone Clayton, MD's license?
NPPES lists California license number G048202, 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.