Katherine T. Hsiao, MD
Gynecology Physician · San Francisco, CA
Katherine T. Hsiao, MD is a gynecology physician with a practice address in San Francisco, California, and NPI 1437237674, issued on Nov 2, 2006. Check the license (California A51088, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine T. Hsiao
- Credential
- MD
- Primary taxonomy
- Gynecology Physician 207VG0400X
- License number
- A51088 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Van Ness Ave FL 4, San Francisco, CA 94109
- Phone
- (415) 750-7050
- Enumerated
- Nov 2, 2006
- Record last updated
- Mar 3, 2026
- Fax
- (715) 369-1389
- Medicare enrollment
- Enrolled (PECOS I20120510000507); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gynecology physician records → All 369 in California → Look up another NPI →
Also registered at 1100 Van Ness Ave FL 4
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gabriella Brown, MS, LCGCGenetic Counselor (M.S.)1326026873
- Anna Buchsbaum, M.D.Obstetrics & Gynecology Physician1689806317
- Elena Burbridge, RD, CDERegistered Dietitian1841804259
- John Chan, MDGynecologic Oncology Physician1962596551
- Lejla Delic, M.D.Gynecologic Oncology Physician1063615185
- Jessica Fisher, FNP-CFamily Nurse Practitioner1326875550
Verify Katherine T. Hsiao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A51088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average gynecology physician in 2024
263 Medicare Part D claims for 74 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Estradiol54 claims
- Progesterone35 claims
- Estradiol (Twice Weekly)21 claims
- Dotti18 claims
- Raloxifene Hcl16 claims
- Imvexxy11 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.
Industry payments in 2024: $585.43
17 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 1,398 providers of this specialty with any payment received $2,469.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationNovato, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine T. Hsiao among 369 gynecology physician records in California
Katherine T. Hsiao, MD is one of 369 gynecology physician records with a practice address in California. 60% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 40% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1990 · median 1995 among the 141 with a school on file
- Record last updated2026 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VG0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecology Physician providers in California
There are 369 gynecology physician records in California.
All 369 in California → Every provider in San Francisco → Gynecology Physician nationwide →
The 8 gynecology physician records with the nearest ZIP codes
- Jean Curran, M.D.San Francisco, CA 941091508904897
- Alexandra Metcalf, MDSan Francisco, CA 941091255836078
- Marilyn Milkman, MDSan Francisco, CA 941091477515203
- Margarita Alvarado, M.D.San Francisco, CA 941101417974858
- Lilly Poon, MDSan Francisco, CA 941081326053059
- Ricki Pollycove, M.D., M.H.S.San Francisco, CA 941151013097013
- Diane Sklar, MDSan Franciscto, CA 941431538247184
- Maryam Hadiashar, M.D.Redwood City, CA 940631306011259
Common questions
What is Katherine T. Hsiao, MD's NPI number?
Katherine T. Hsiao, MD's National Provider Identifier (NPI) is 1437237674, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine T. Hsiao, MD located?
The NPPES record lists a practice address at 1100 Van Ness Ave FL 4, San Francisco, CA, 94109. Phone: (415) 750-7050. Providers update this record themselves, so call before visiting.
How can I verify Katherine T. Hsiao, MD's license?
NPPES lists California license number A51088, 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 Katherine T. Hsiao, MD prescribe under Medicare Part D?
In 2024, Katherine T. Hsiao, MD had 263 Medicare Part D claims for 74 beneficiaries; the average among gynecology physician prescribers was 299. 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.