Constance Halligan, PH.D.
NPI 1962543983 · Clinical Psychologist · Ellicott City, MD
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Constance Halligan, PH.D. is a Clinical Psychologist provider in Ellicott City, MD (NPI 1962543983).
Provider details
- NPI number
- 1962543983
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 3499 (MD)
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
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
- 2007-02-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Constance Halligan's NPI number?
- Constance Halligan's National Provider Identifier (NPI) is 1962543983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Constance Halligan's specialty?
- Constance Halligan is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Constance Halligan located?
- Constance Halligan's practice location on file with NPPES is 5022 Dorsey Hall Dr, Ellicott City, MD 21042-7711.
- What is Constance Halligan's phone number?
- The practice phone number listed in the NPPES registry for Constance Halligan is (410) 730-7333.
- Does Constance Halligan accept Medicare?
- Constance Halligan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Constance Halligan's NPI active?
- Yes — Constance Halligan's NPI (1962543983) 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.