Victoria Chiayu Hsiao, MD, PHD
Endocrinology · Internal Medicine (CMS) · San Francisco, CA
At a glance
400 Parnassus Ave Ste A550, San Francisco, CA 94143
NPPES record updated Mar 11, 2019. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
400 Parnassus Ave Ste A550San Francisco, CA 94143
Additional reported practice locations
400 Parnassus Ave Ste A550San Francisco, CA 94143
Phone: 4153532350
Fax: 4153532337
Education & affiliations
- Medical / professional school
- Columbia University College Of Physicians And Surgeons
- Graduation year
- 2003
- CMS specialties
- Endocrinology · Internal Medicine
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
- Regents Of The University Of California
- Ucsf Medical Group Business Services
- University Of California San Francisco
Reported hospital affiliations
- Ucsf Medical Center San Francisco, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Endocrinology · Internal Medicine (CMS)
- Taxonomy code
- 207RE0101X
- Enumeration date
- Jan 30, 2007
- Record updated
- Mar 11, 2019
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD, PHD
Reported taxonomies and licenses
207RE0101X
License reported: 4301089481 MI
207RE0101X
License reported: 257692 NY
207RE0101X · Primary
License reported: C145561 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
400 Parnassus Ave Ste A550San Francisco, CA 94143
- Phone
- (415) 353-2350
- Fax
- (415) 353-2337
Mailing address
400 PARNASSUS AVE STE A550SAN FRANCISCO, CA 941432202
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue