John Herkenhoff, MFT
NPI 1427114057 · Marriage & Family Therapist · Oakland, CA
John Herkenhoff, MFT is a Marriage & Family Therapist provider in Oakland, CA (NPI 1427114057).
Provider details
- NPI number
- 1427114057
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Male
- Sole proprietor
- No
- License
- MFC 43922 (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
- 2006-12-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Herkenhoff's NPI number?
- John Herkenhoff's National Provider Identifier (NPI) is 1427114057, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Herkenhoff's specialty?
- John Herkenhoff is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Herkenhoff located?
- John Herkenhoff's practice location on file with NPPES is 4368 Lincoln Ave, Oakland, CA 94602-2529.
- What is John Herkenhoff's phone number?
- The practice phone number listed in the NPPES registry for John Herkenhoff is (510) 531-3111.
- Is John Herkenhoff's NPI active?
- Yes — John Herkenhoff's NPI (1427114057) 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.