Carmella Johnston, M.A.
NPI 1871651083 · Marriage & Family Therapist · Concord, CA
Carmella Johnston, M.A. is a Marriage & Family Therapist provider in Concord, CA (NPI 1871651083).
Provider details
- NPI number
- 1871651083
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.A.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 99482 (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
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
- 2006-12-04
- Last updated
- 2018-09-24
Frequently asked questions
- What is Carmella Johnston's NPI number?
- Carmella Johnston's National Provider Identifier (NPI) is 1871651083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carmella Johnston's specialty?
- Carmella Johnston is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Carmella Johnston located?
- Carmella Johnston's practice location on file with NPPES is 1861 Silverwood Dr, Concord, CA 94519-1352.
- What is Carmella Johnston's phone number?
- The practice phone number listed in the NPPES registry for Carmella Johnston is (925) 687-0202.
- Is Carmella Johnston's NPI active?
- Yes — Carmella Johnston's NPI (1871651083) is active in the NPPES registry as of the last update on 2018-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.