William A. Wallace, MD
Obstetrics & Gynecology Physician · Harbor City, CA
William A. Wallace, MD is an obstetrics & gynecology physician with a practice address in Harbor City, California, and NPI 1477620342, issued on Nov 29, 2006. Check the license (California G79737, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William A. Wallace
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G79737 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25825 Vermont Ave, Harbor City, CA 90710
- Phone
- (310) 325-5111
- Enumerated
- Nov 29, 2006
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100825000761); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 25825 Vermont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maryam Abdelnaby, MDFamily Medicine Physician1104978568
- Christiana Abraham, NPFamily Nurse Practitioner1447855911
- Kamren AckermanPhysical Therapist1104412352
- Bradley Ackerson, MDPediatric Infectious Diseases Physician1255490918
- Yossef Aelony, MDPulmonary Disease Physician1619178597
- Lisa Agustines, MDObstetrics & Gynecology Physician1750452736
Verify William A. Wallace in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79737Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
59 Medicare Part D claims for 18 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Medroxyprogesterone Acetate16 claims
- Estradiol14 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupHarbor City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Wallace among 5,088 obstetrics & gynecology physician records in California
William A. Wallace, 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. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1993 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 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).
30 obstetrics & gynecology physician records list a practice address in Harbor City
They are 30 of the 958 NPPES records with a practice address in Harbor City, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Harbor City → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Lisa Agustines, MDHarbor City, CA 907101750452736
- Mostapha Arafa, MDHarbor City, CA 907101184783714
- Colleen Bonpane Londono, MDHarbor City, CA 907101033278692
- Curt Finney, M.D.Harbor City, CA 907101821102146
- Gonzalo Garreton, MDHarbor City, CA 907101124195938
- Nioosha Godsi, MDHarbor City, CA 907101164599973
- Timothy Kelly, MDHarbor City, CA 907101609947647
- Sandra Kim, MDHarbor City, CA 907101497814008
Common questions
What is William A. Wallace, MD's NPI number?
William A. Wallace, MD's National Provider Identifier (NPI) is 1477620342, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Wallace, MD located?
The NPPES record lists a practice address at 25825 Vermont Ave, Harbor City, CA, 90710. Phone: (310) 325-5111. Providers update this record themselves, so call before visiting.
How can I verify William A. Wallace, MD's license?
NPPES lists California license number G79737, 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 William A. Wallace, MD prescribe under Medicare Part D?
In 2024, William A. Wallace, MD had 59 Medicare Part D claims for 18 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.