William Christiansen, M.D.
NPI 1831107952 · Emergency Medicine Physician · San Diego, CA
William Christiansen, M.D. is a Emergency Medicine Physician provider in San Diego, CA (NPI 1831107952).
Provider details
- NPI number
- 1831107952
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G50367 (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
19 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
- 2006-08-04
- Last updated
- 2013-06-18
Frequently asked questions
- What is William Christiansen's NPI number?
- William Christiansen's National Provider Identifier (NPI) is 1831107952, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Christiansen's specialty?
- William Christiansen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Christiansen located?
- William Christiansen's practice location on file with NPPES is 10243 Genetic Center Dr, San Diego, CA 92121-6310.
- What is William Christiansen's phone number?
- The practice phone number listed in the NPPES registry for William Christiansen is (858) 526-6100.
- Is William Christiansen's NPI active?
- Yes — William Christiansen's NPI (1831107952) is active in the NPPES registry as of the last update on 2013-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.