Larissa Merwin, B.A.
NPI 1871604603 · Mental Health Counselor · Marysville, WA
Larissa Merwin, B.A. is a Mental Health Counselor provider in Marysville, WA (NPI 1871604603).
Provider details
- NPI number
- 1871604603
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- B.A.
- Sex
- Female
- Sole proprietor
- No
- License
- RC00050892 (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
19 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
- 2006-08-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Larissa Merwin's NPI number?
- Larissa Merwin's National Provider Identifier (NPI) is 1871604603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larissa Merwin's specialty?
- Larissa Merwin is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Larissa Merwin located?
- Larissa Merwin's practice location on file with NPPES is 4308 76th St Ne, Marysville, WA 98270-3720.
- What is Larissa Merwin's phone number?
- The practice phone number listed in the NPPES registry for Larissa Merwin is (425) 349-7309.
- Is Larissa Merwin's NPI active?
- Yes — Larissa Merwin's NPI (1871604603) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.