Melissa Williamson, MSW
NPI 1609016435 · Mental Health Counselor · Washington, DC
Melissa Williamson, MSW is a Mental Health Counselor provider in Washington, DC (NPI 1609016435).
Provider details
- NPI number
- 1609016435
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Female
- Sole proprietor
- No
- License
- LC303309 (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
- 2009-03-06
- Last updated
- 2009-03-06
Frequently asked questions
- What is Melissa Williamson's NPI number?
- Melissa Williamson's National Provider Identifier (NPI) is 1609016435, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Williamson's specialty?
- Melissa Williamson is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Melissa Williamson located?
- Melissa Williamson's practice location on file with NPPES is 64 New York Ave Ne, Washington, DC 20002-3320.
- What is Melissa Williamson's phone number?
- The practice phone number listed in the NPPES registry for Melissa Williamson is (202) 673-7013.
- Is Melissa Williamson's NPI active?
- Yes — Melissa Williamson's NPI (1609016435) is active in the NPPES registry as of the last update on 2009-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.