Susie Ahn, MD
Obstetrics & Gynecology Physician · Antioch, CA
Susie Ahn, MD is an obstetrics & gynecology physician with a practice address in Antioch, California, and NPI 1265966113, issued on Apr 18, 2017. Check the license (California A173255, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Susie Ahn
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- A173255 CA
226724 NC
Self-reported in NPPES; status is on the state search - Practice location
- 3624 Delta Fair Blvd Bldg E, Antioch, CA 94509
- Phone
- (925) 779-5090
- Enumerated
- Apr 18, 2017
- Record last updated
- Feb 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20240918003446); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Susie Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A173255Check 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% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
270 Medicare Part D claims for 127 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Estradiol67 claims
- Yuvafem29 claims
- Clobetasol Propionate21 claims
- Fluconazole14 claims
- Clindamycin Phosphate12 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
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susie Ahn among 5,088 obstetrics & gynecology physician records in California
Susie Ahn, 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 2017, is newer than 87% of them.
- NPI issued2017 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2017 · median 2004 among the 2,700 with a school on file
- Record last updated2022 · 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 Antioch → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ligia Giese, MDAntioch, CA 945091508944661
- Kenneth Grullon, MDAntioch, CA 945091801974977
- Katrina Hendricks, MDAntioch, CA 945091699852525
- Young Kim, M.D.Antioch, CA 945091649236522
- Nina Lee, MDAntioch, CA 945091902984016
- Edgard Sanchez, MDAntioch, CA 945091962580068
- Vivien Tin, MDAntioch, CA 945091619041225
- Daniel Zimmerman, MDAntioch, CA 945091124121223
Common questions
What is Susie Ahn, MD's NPI number?
Susie Ahn, MD's National Provider Identifier (NPI) is 1265966113, issued on Apr 18, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Susie Ahn, MD located?
The NPPES record lists a practice address at 3624 Delta Fair Blvd Bldg E, Antioch, CA, 94509. Phone: (925) 779-5090. Providers update this record themselves, so call before visiting.
How can I verify Susie Ahn, MD's license?
NPPES lists California license number A173255, 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 Susie Ahn, MD prescribe under Medicare Part D?
In 2024, Susie Ahn, MD had 270 Medicare Part D claims for 127 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.