Julia Janssen
NPI 1871026773 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Julia Janssen is a Internal Medicine Physician provider in San Francisco, CA (NPI 1871026773).
Provider details
- NPI number
- 1871026773
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A158396 (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
9 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2017-04-07
- Last updated
- 2023-09-20
- Certified
- 2023-09-20
Frequently asked questions
- What is Julia Janssen's NPI number?
- Julia Janssen's National Provider Identifier (NPI) is 1871026773, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Julia Janssen's specialty?
- Julia Janssen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Julia Janssen located?
- Julia Janssen's practice location on file with NPPES is 356 7th St, San Francisco, CA 94103-4030.
- What is Julia Janssen's phone number?
- The practice phone number listed in the NPPES registry for Julia Janssen is (628) 217-6600.
- Does Julia Janssen accept Medicare?
- Julia Janssen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Julia Janssen's NPI active?
- Yes — Julia Janssen's NPI (1871026773) is active in the NPPES registry as of the last update on 2023-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.