Stephen Farnum, M.D.
NPI 1720053507 · Anesthesiology Physician · Northridge, CA
Stephen Farnum, M.D. is a Anesthesiology Physician provider in Northridge, CA (NPI 1720053507).
Provider details
- NPI number
- 1720053507
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A29406 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-02-23
- Last updated
- 2009-02-17
Frequently asked questions
- What is Stephen Farnum's NPI number?
- Stephen Farnum's National Provider Identifier (NPI) is 1720053507, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Farnum's specialty?
- Stephen Farnum is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Farnum located?
- Stephen Farnum's practice location on file with NPPES is 18300 Roscoe Blvd, Northridge, CA 91325-4105.
- What is Stephen Farnum's phone number?
- The practice phone number listed in the NPPES registry for Stephen Farnum is (818) 885-5375.
- Is Stephen Farnum's NPI active?
- Yes — Stephen Farnum's NPI (1720053507) is active in the NPPES registry as of the last update on 2009-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.