Sonja Linn, PH.D.
NPI 1477722973 · Counseling Psychologist · Washington, DC
Sonja Linn, PH.D. is a Counseling Psychologist provider in Washington, DC (NPI 1477722973).
Provider details
- NPI number
- 1477722973
- Entity type
- Individual
- Primary specialty
- Counseling PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY1000207 (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
18 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
- 2008-02-28
- Last updated
- 2008-02-28
Frequently asked questions
- What is Sonja Linn's NPI number?
- Sonja Linn's National Provider Identifier (NPI) is 1477722973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Linn's specialty?
- Sonja Linn is listed in the NPPES registry with a primary specialty of Counseling Psychologist (Behavioral Health & Social Service Providers).
- Where is Sonja Linn located?
- Sonja Linn's practice location on file with NPPES is 2440 M St Nw, Washington, DC 20037-1404.
- What is Sonja Linn's phone number?
- The practice phone number listed in the NPPES registry for Sonja Linn is (202) 887-8088.
- Is Sonja Linn's NPI active?
- Yes — Sonja Linn's NPI (1477722973) is active in the NPPES registry as of the last update on 2008-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.