Barbara Callahan, M.D.
NPI 1124111653 · Internal Medicine Physician · West Hills, CA
Barbara Callahan, M.D. is a Internal Medicine Physician provider in West Hills, CA (NPI 1124111653).
Provider details
- NPI number
- 1124111653
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- C41130 (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
- 2006-10-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Barbara Callahan's NPI number?
- Barbara Callahan's National Provider Identifier (NPI) is 1124111653, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Callahan's specialty?
- Barbara Callahan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Barbara Callahan located?
- Barbara Callahan's practice location on file with NPPES is 7301 Medical Center Dr #402, West Hills, CA 91307.
- What is Barbara Callahan's phone number?
- The practice phone number listed in the NPPES registry for Barbara Callahan is (818) 227-0070.
- Is Barbara Callahan's NPI active?
- Yes — Barbara Callahan's NPI (1124111653) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.