Lorraine Annette Walker, M.D.
Obstetrics & Gynecology Physician · Newport Beach, CA
Lorraine Annette Walker, M.D. is an obstetrics & gynecology physician with a practice address in Newport Beach, California, and NPI 1083760292, issued on Jan 28, 2007. Check the license (California G57329, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lorraine Annette Walker
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G57329 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 W Coast Hwy, Newport Beach, CA 92663
- Phone
- (949) 491-9991
- Enumerated
- Jan 28, 2007
- Record last updated
- Feb 3, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (949) 258-5858
- Medicare enrollment
- Enrolled (PECOS I20121219000169); accepts Medicare assignment
- Medical or professional school
- Howard University College Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 3300 W Coast Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lorraine Annette Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57329Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Pomona Community Health CenterOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lorraine Annette Walker among 5,088 obstetrics & gynecology physician records in California
Lorraine Annette Walker, M.D. 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. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 38% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1981 · median 2004 among the 2,700 with a school on file
- Record last updated2016 · 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.
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
- William Clayton, MDNewport Beach, CA 926631366525586
- 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
Common questions
What is Lorraine Annette Walker, M.D.'s NPI number?
Lorraine Annette Walker, M.D.'s National Provider Identifier (NPI) is 1083760292, issued on Jan 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lorraine Annette Walker, M.D. located?
The NPPES record lists a practice address at 3300 W Coast Hwy, Newport Beach, CA, 92663. Phone: (949) 491-9991. Providers update this record themselves, so call before visiting.
How can I verify Lorraine Annette Walker, M.D.'s license?
NPPES lists California license number G57329, 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.