John Threlfall, MA, MFT
NPI 1790019073 · Marriage & Family Therapist · Hilo, HI
John Threlfall, MA, MFT is a Marriage & Family Therapist provider in Hilo, HI (NPI 1790019073).
Provider details
- NPI number
- 1790019073
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MA, MFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- 223 (HI)
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
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
- 2009-09-19
- Last updated
- 2009-09-19
Frequently asked questions
- What is John Threlfall's NPI number?
- John Threlfall's National Provider Identifier (NPI) is 1790019073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Threlfall's specialty?
- John Threlfall is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Threlfall located?
- John Threlfall's practice location on file with NPPES is 56 Waianuenue Ave, Hilo, HI 96720-2474.
- What is John Threlfall's phone number?
- The practice phone number listed in the NPPES registry for John Threlfall is (808) 967-7613.
- Is John Threlfall's NPI active?
- Yes — John Threlfall's NPI (1790019073) is active in the NPPES registry as of the last update on 2009-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.