Ziyad Hannon, M.D.
Obstetrics & Gynecology Physician · San Francisco, CA
Ziyad Hannon, M.D. is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1942206560, issued on Jun 28, 2005. Check the license (California C40187, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ziyad Hannon
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- C40187 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2645 Ocean Ave, San Francisco, CA 94132
- Phone
- (415) 334-0999
- Enumerated
- Jun 28, 2005
- Record last updated
- Mar 24, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 00C401871 CA
- Medicare enrollment
- Enrolled (PECOS I20080417000600); 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 2645 Ocean Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paula Arriaga, PAPhysician Assistant1417248337
- Lawrence Chao, M.D.Internal Medicine Physician1700896370
- Effat Danial, OPTICIANOptician1063850360
- Charles Delatore, M.D.Internal Medicine Physician1679560478
- Mary Granick, LMFTMarriage & Family Therapist1093956633
- Andrew Hooker, MDInternal Medicine Physician1922628114
Verify Ziyad Hannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C40187Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
263 Medicare Part D claims for 69 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Triamcinolone Acetonide46 claims
- Estradiol19 claims
- Valacyclovir18 claims
- Medroxyprogesterone Acetate16 claims
- Sulfamethoxazole-Trimethoprim15 claims
- Atorvastatin Calcium12 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.
Ziyad Hannon among 5,088 obstetrics & gynecology physician records in California
Ziyad Hannon, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1980 · median 2004 among the 2,700 with a school on file
- Record last updated2008 · 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 San Francisco → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Pearl Yee, MDSan Francisco, CA 941321750430138
- Esther Chang, M.D.San Francisco, CA 941331699764274
- John Ho, M.D.San Francisco, CA 941331073540225
- Rena Hu, M.D.San Francisco, CA 941331275774374
- Dong Hwang, MDSan Francisco, CA 941331700951233
- Leonard Rothman, M.D.San Francisco, CA 941331275807323
- Audrey Sue-Matsumoto, MDSan Francisco, CA 941331942569918
- Jonathan Wong, MDSan Francisco, CA 941331780750588
Common questions
What is Ziyad Hannon, M.D.'s NPI number?
Ziyad Hannon, M.D.'s National Provider Identifier (NPI) is 1942206560, issued on Jun 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ziyad Hannon, M.D. located?
The NPPES record lists a practice address at 2645 Ocean Ave, San Francisco, CA, 94132. Phone: (415) 334-0999. Providers update this record themselves, so call before visiting.
How can I verify Ziyad Hannon, M.D.'s license?
NPPES lists California license number C40187, 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 Ziyad Hannon, M.D. prescribe under Medicare Part D?
In 2024, Ziyad Hannon, M.D. had 263 Medicare Part D claims for 69 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.