Anton L. Ambrose, M.D.
Obstetrics & Gynecology Physician · Northridge, CA
Anton L. Ambrose, M.D. is an obstetrics & gynecology physician with a practice address in Northridge, California, and NPI 1225125297, issued on Oct 9, 2006. Check the license (California A33172, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Anton L. Ambrose
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A33172 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18350 Roscoe Blvd, Northridge, CA 91325
- Phone
- (818) 341-3111
- Enumerated
- Oct 9, 2006
- Record last updated
- Apr 26, 2023
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 18350 Roscoe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jennifer Bronson, ACNPAcute Care Nurse Practitioner1588003487
- Xavier Caro, M.DSpecialist1477656353
- Andrew Chang, M.D.Ophthalmology Physician1003808494
Verify Anton L. Ambrose in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A33172Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29.0 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
4,786 Medicare Part D claims for 276 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 13 claims were for opioids.
Most prescribed
- Omeprazole223 claims
- Atorvastatin Calcium215 claims
- Amlodipine Besylate167 claims
- Metformin Hcl145 claims
- Tamsulosin Hcl144 claims
- Furosemide140 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.
Anton L. Ambrose among 5,088 obstetrics & gynecology physician records in California
Anton L. Ambrose, 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 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 fileNo · 53% of these records are
- Record last updated2023 · 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 Northridge → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Neda Ballon Reyes, MDNorthridge, CA 913251780767814
- Lisbeth Chang, MDNorthridge, CA 913251861551541
- Steve Yu, MDNorthridge, CA 913251528251410
- Jerry Izu, M.D.Santa Clarita, CA 913211407928039
- Pang-Hsiung Huang, M.D.Thousand Oaks, CA 913201760478408
- Sherbanoo Peermahomed, M.D.Northridge, CA 913301497943997
- Hyuk Kim, D.O.Pacoima, CA 913311205845583
- Sharmeela Advani, MDSan Fernando, CA 913401306835848
Common questions
What is Anton L. Ambrose, M.D.'s NPI number?
Anton L. Ambrose, M.D.'s National Provider Identifier (NPI) is 1225125297, issued on Oct 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Anton L. Ambrose, M.D. located?
The NPPES record lists a practice address at 18350 Roscoe Blvd, Northridge, CA, 91325. Phone: (818) 341-3111. Providers update this record themselves, so call before visiting.
How can I verify Anton L. Ambrose, M.D.'s license?
NPPES lists California license number A33172, 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 Anton L. Ambrose, M.D. prescribe under Medicare Part D?
In 2024, Anton L. Ambrose, M.D. had 4,786 Medicare Part D claims for 276 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.