Melissa O'Connell Liggett, PH.D.
NPI 1528206778 · Clinical Psychologist · Washington, DC
Melissa O'Connell Liggett, PH.D. is a Clinical Psychologist provider in Washington, DC (NPI 1528206778).
Provider details
- NPI number
- 1528206778
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 1000522 (DC)
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
17 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
- 2009-01-27
- Last updated
- 2017-01-11
Frequently asked questions
- What is Melissa O'Connell Liggett's NPI number?
- Melissa O'Connell Liggett's National Provider Identifier (NPI) is 1528206778, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa O'Connell Liggett's specialty?
- Melissa O'Connell Liggett is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Melissa O'Connell Liggett located?
- Melissa O'Connell Liggett's practice location on file with NPPES is 111 Michigan Ave Nw, Washington, DC 20010-2916.
- What is Melissa O'Connell Liggett's phone number?
- The practice phone number listed in the NPPES registry for Melissa O'Connell Liggett is (202) 476-5405.
- Is Melissa O'Connell Liggett's NPI active?
- Yes — Melissa O'Connell Liggett's NPI (1528206778) is active in the NPPES registry as of the last update on 2017-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.