John Porterfield, MFT
NPI 1366855389 · Marriage & Family Therapist · Sherman Oaks, CA
John Porterfield, MFT is a Marriage & Family Therapist provider in Sherman Oaks, CA (NPI 1366855389).
Provider details
- NPI number
- 1366855389
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC 35445 (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
12 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
- 2014-06-06
- Last updated
- 2014-06-06
Frequently asked questions
- What is John Porterfield's NPI number?
- John Porterfield's National Provider Identifier (NPI) is 1366855389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Porterfield's specialty?
- John Porterfield is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Porterfield located?
- John Porterfield's practice location on file with NPPES is 15278 Rayneta Dr, Sherman Oaks, CA 91403-4430.
- What is John Porterfield's phone number?
- The practice phone number listed in the NPPES registry for John Porterfield is (818) 784-0633.
- Is John Porterfield's NPI active?
- Yes — John Porterfield's NPI (1366855389) is active in the NPPES registry as of the last update on 2014-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.