Karen Lassell, MFT
NPI 1447542329 · Marriage & Family Therapist · Martinez, CA
Karen Lassell, MFT is a Marriage & Family Therapist provider in Martinez, CA (NPI 1447542329).
Provider details
- NPI number
- 1447542329
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Female
- Sole proprietor
- Yes
- License
- MN19567 (CA)
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
15 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
- 2011-05-10
- Last updated
- 2011-05-10
Frequently asked questions
- What is Karen Lassell's NPI number?
- Karen Lassell's National Provider Identifier (NPI) is 1447542329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Lassell's specialty?
- Karen Lassell is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Karen Lassell located?
- Karen Lassell's practice location on file with NPPES is 2356 Minaret Dr, Martinez, CA 94553-4914.
- What is Karen Lassell's phone number?
- The practice phone number listed in the NPPES registry for Karen Lassell is (925) 372-3746.
- Is Karen Lassell's NPI active?
- Yes — Karen Lassell's NPI (1447542329) is active in the NPPES registry as of the last update on 2011-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.