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MR. JOHN H THRELFALL MA, MFT
NPI 1790019073
Marriage & Family Therapist in Hilo, HI

Active since September 19, 2009
56 WAIANUENUE AVE, 214, HILO, HI 96720(808) 967-7613 Get Directions Write a Review

NPPES record last updated: September 19, 2009. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mr. John H Threlfall Ma, Mft NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. JOHN H THRELFALL MA, MFT (NPI 1790019073) is an individual marriage & family therapist in Hilo, Hawaii, licensed in Hawaii (223) and active in the NPI registry since September 2009.

NPPES Registry Identity

NPI1790019073
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameMR. JOHN H THRELFALLCredential: MA, MFT
Location Address56 WAIANUENUE AVE, 214Hilo, HI 96720-2474
Mailing AddressPo Box 757Volcano, HI 96785-0757 · (808) 967-7613
Phone(808) 967-7613
Sole ProprietorYes
Enumeration DateSeptember 19, 2009
✔ NPI 1790019073 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in HI · 223
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
56 WAIANUENUE AVE, Hilo, HI 96720
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Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. MIHOKO KUSACHI LMHC
Counselor (Mental Health)
56 WAIANUENUE AVE, #8
HILO, HI 96720
Hawaii County (808) 769-1468
MR. THOMAS CARL DRUMM LCSW
Social Worker (Clinical)
56 WAIANUENUE AVE, SUITE # 208
HILO, HI 96720
Hawaii County (808) 989-3784
EFFECTIVE CHANGE LLC
Community/Behavioral Health
56 WAIANUENUE AVE
HILO, HI 96720
Hawaii County (808) 934-7566

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Threlfall's NPI number?

The NPI number for John Threlfall is 1790019073. It was assigned to this individual provider in the NPPES registry on September 19, 2009.

Where is John Threlfall located?

John Threlfall practices at 56 Waianuenue Ave 214, Hilo, HI 96720. The listed phone number is (808) 967-7613.

What is John Threlfall's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

When was this NPI record last updated?

The NPPES record for John Threlfall was last updated on September 19, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.