William Gersten
NPI 1215121603 · Student in an Organized Health Care Education/Training Program · San Francisco, CA
William Gersten is a Student in an Organized Health Care Education/Training Program provider in San Francisco, CA (NPI 1215121603).
Provider details
- NPI number
- 1215121603
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2007-08-29
- Last updated
- 2007-08-29
Frequently asked questions
- What is William Gersten's NPI number?
- William Gersten's National Provider Identifier (NPI) is 1215121603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Gersten's specialty?
- William Gersten is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is William Gersten located?
- William Gersten's practice location on file with NPPES is 1010 Gough St, San Francisco, CA 94109-7622.
- What is William Gersten's phone number?
- The practice phone number listed in the NPPES registry for William Gersten is (415) 474-7310.
- Is William Gersten's NPI active?
- Yes — William Gersten's NPI (1215121603) is active in the NPPES registry as of the last update on 2007-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.