Susan Tien, M.D.
NPI 1932309168 · Obstetrics & Gynecology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Tien, M.D. is a Obstetrics & Gynecology Physician provider in San Francisco, CA (NPI 1932309168).
Provider details
- NPI number
- 1932309168
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 99411 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 204 | 126 |
| Progesterone, Micronizedbrand: Progesterone | 90 | 34 |
| Acyclovir | 75 | 29 |
| Estradiolbrand: Yuvafem | 69 | 29 |
| Estradiolbrand: Estring | 59 | 26 |
| Estradiolbrand: Climara | 56 | 28 |
| Clobetasol Propionate | 33 | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,516 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-25
- Last updated
- 2022-01-10
Frequently asked questions
- What is Susan Tien's NPI number?
- Susan Tien's National Provider Identifier (NPI) is 1932309168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Tien's specialty?
- Susan Tien is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Tien located?
- Susan Tien's practice location on file with NPPES is 2425 Geary Blvd, San Francisco, CA 94115-3358.
- What is Susan Tien's phone number?
- The practice phone number listed in the NPPES registry for Susan Tien is (415) 833-3937.
- Does Susan Tien accept Medicare?
- Susan Tien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Tien's NPI active?
- Yes — Susan Tien's NPI (1932309168) is active in the NPPES registry as of the last update on 2022-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.