Mark Howerton, MS, LMFT
NPI 1871820779 · Marriage & Family Therapist · Costa Mesa, CA
Mark Howerton, MS, LMFT is a Marriage & Family Therapist provider in Costa Mesa, CA (NPI 1871820779).
Provider details
- NPI number
- 1871820779
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS, LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC #46047 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
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
- 2009-11-13
- Last updated
- 2016-05-23
Frequently asked questions
- What is Mark Howerton's NPI number?
- Mark Howerton's National Provider Identifier (NPI) is 1871820779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Howerton's specialty?
- Mark Howerton is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Mark Howerton located?
- Mark Howerton's practice location on file with NPPES is 3001 Red Hill Ave., Costa Mesa, CA 92626.
- What is Mark Howerton's phone number?
- The practice phone number listed in the NPPES registry for Mark Howerton is (949) 933-6275.
- Is Mark Howerton's NPI active?
- Yes — Mark Howerton's NPI (1871820779) is active in the NPPES registry as of the last update on 2016-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.