Sonja Merz, LMFT
NPI 1700114279 · Marriage & Family Therapist · Bellevue, WA
Sonja Merz, LMFT is a Marriage & Family Therapist provider in Bellevue, WA (NPI 1700114279).
Provider details
- NPI number
- 1700114279
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Female
- Sole proprietor
- Yes
- License
- LG60070301 (WA)
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
16 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
- 2009-11-21
- Last updated
- 2025-04-30
- Certified
- 2025-04-30
Frequently asked questions
- What is Sonja Merz's NPI number?
- Sonja Merz's National Provider Identifier (NPI) is 1700114279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Merz's specialty?
- Sonja Merz is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Sonja Merz located?
- Sonja Merz's practice location on file with NPPES is 16410 Se 21st Pl, Bellevue, WA 98008-5302.
- What is Sonja Merz's phone number?
- The practice phone number listed in the NPPES registry for Sonja Merz is (206) 999-3771.
- Is Sonja Merz's NPI active?
- Yes — Sonja Merz's NPI (1700114279) is active in the NPPES registry as of the last update on 2025-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.