IndividualActive
Alexander Callahan
NPI 1922515832 · Behavior Analyst · Fairfax, VA
Alexander Callahan is a Behavior Analyst provider in Fairfax, VA (NPI 1922515832).
Provider details
- NPI number
- 1922515832
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(63/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 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
10530 Warwick Ave Ste C2
Fairfax, VA 22030-3132
Phone: (703) 994-4754
Fax: (703) 994-4754
Street-level locationGet directions
Mailing address
10530 Warwick Ave Ste C2
Fairfax, VA 22030-3132
Registry dates
- Enumerated
- 2018-01-02
- Last updated
- 2018-01-02
Frequently asked questions
- What is Alexander Callahan's NPI number?
- Alexander Callahan's National Provider Identifier (NPI) is 1922515832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Callahan's specialty?
- Alexander Callahan is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Alexander Callahan located?
- Alexander Callahan's practice location on file with NPPES is 10530 Warwick Ave Ste C2, Fairfax, VA 22030-3132.
- What is Alexander Callahan's phone number?
- The practice phone number listed in the NPPES registry for Alexander Callahan is (703) 994-4754.
- Is Alexander Callahan's NPI active?
- Yes — Alexander Callahan's NPI (1922515832) is active in the NPPES registry as of the last update on 2018-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.