Constance Halligan, PH.D.
Clinical Psychologist · Ellicott City, MD
Constance Halligan, PH.D. is a clinical psychologist with a practice address in Ellicott City, Maryland, and NPI 1962543983, issued on Feb 11, 2007. Check the license (Maryland 3499, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Constance Halligan
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 3499 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5022 Dorsey Hall Dr, Ellicott City, MD 21042
- Phone
- (410) 730-7333
- Enumerated
- Feb 11, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20091106000311); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,499 in Maryland → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Constance Halligan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 3499Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Constance Halligan among 1,499 clinical psychologist records in Maryland
Constance Halligan, PH.D. is one of 1,499 clinical psychologist records with a practice address in Maryland. 10% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 19% of them.
- NPI issued2007 · 19% of these records are older, 61% newer
- In a Medicare fileNo · 10% of these records are
- In the CMS Doctors and Clinicians fileYes · 18% of these records are
- Graduated1979 · median 2003 among the 265 with a school on file
- Record last updated2007 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 clinical psychologist records list a practice address in Ellicott City
They are 21 of the 1,648 NPPES records with a practice address in Ellicott City, and 1,499 clinical psychologist records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,499 in Maryland → Every provider in Ellicott City → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Kara Biondo, PSY.D.Ellicott City, MD 210421316224231
- Siobhan Donnelly, PSY.D.Ellicott City, MD 210421669888392
- Eric Fielding, PH.D.Ellicott City, MD 210421427270628
- Courtney Keeton, PHDEllicott City, MD 210421679763395
- Melissa Lean, PSY.D.Ellicott City, MD 210421396297206
- Maria Mouratidis, PSY.D.Ellicott City, MD 210421922078021
- Vicki Murphy, PHDEllicott City, MD 210421831235696
- Michael O'Connell, PH.D.Ellicott City, MD 210421346316296
Common questions
What is Constance Halligan, PH.D.'s NPI number?
Constance Halligan, PH.D.'s National Provider Identifier (NPI) is 1962543983, issued on Feb 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Constance Halligan, PH.D. located?
The NPPES record lists a practice address at 5022 Dorsey Hall Dr, Ellicott City, MD, 21042. Phone: (410) 730-7333. Providers update this record themselves, so call before visiting.
How can I verify Constance Halligan, PH.D.'s license?
NPPES lists Maryland license number 3499, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.