Arianna Cassidy, MD
NPI 1902268923 · Obstetrics & Gynecology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arianna Cassidy, MD is a Obstetrics & Gynecology Physician provider in San Francisco, CA (NPI 1902268923).
Provider details
- NPI number
- 1902268923
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 152059 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 325 Distel CirLos Altos, CA 94022-1408Phone: (510) 204-3977
Registry dates
- Enumerated
- 2016-03-28
- Last updated
- 2023-09-08
- Certified
- 2023-09-08
Frequently asked questions
- What is Arianna Cassidy's NPI number?
- Arianna Cassidy's National Provider Identifier (NPI) is 1902268923, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arianna Cassidy's specialty?
- Arianna Cassidy is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Arianna Cassidy located?
- Arianna Cassidy's practice location on file with NPPES is 1001 Potrero Ave # 6d, San Francisco, CA 94110-3518.
- What is Arianna Cassidy's phone number?
- The practice phone number listed in the NPPES registry for Arianna Cassidy is (415) 206-4069.
- Does Arianna Cassidy accept Medicare?
- Arianna Cassidy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arianna Cassidy's NPI active?
- Yes — Arianna Cassidy's NPI (1902268923) is active in the NPPES registry as of the last update on 2023-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.