Melissa Callahan
NPI 1740520659 · Marriage & Family Therapist · Alexandria, VA
Melissa Callahan is a Marriage & Family Therapist provider in Alexandria, VA (NPI 1740520659).
Provider details
- NPI number
- 1740520659
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
Mailing address
Registry dates
- Enumerated
- 2013-03-01
- Last updated
- 2023-08-02
- Certified
- 2023-08-02
Frequently asked questions
- What is Melissa Callahan's NPI number?
- Melissa Callahan's National Provider Identifier (NPI) is 1740520659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Callahan's specialty?
- Melissa Callahan is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Melissa Callahan located?
- Melissa Callahan's practice location on file with NPPES is 610 N. Pitt St., Alexandria, VA 22314.
- What is Melissa Callahan's phone number?
- The practice phone number listed in the NPPES registry for Melissa Callahan is (703) 919-2999.
- Is Melissa Callahan's NPI active?
- Yes — Melissa Callahan's NPI (1740520659) is active in the NPPES registry as of the last update on 2023-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.