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JOHN ASHHURST TREHERNE DDS
NPI 1487232294
Dentist - General Practice in Washington, DC

Active since April 01, 2021
3925 MINNESOTA AVE NE, WASHINGTON, DC 20019(202) 396-1444 Get Directions Write a Review

NPPES record last updated: December 4, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 4, 2025, May 29, 2025, Jul 16, 2024 and 2 more (5 updates tracked since 2021).

About John Ashhurst Treherne Dds NPPES

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

JOHN ASHHURST TREHERNE DDS (NPI 1487232294) is an individual general practice provider in Washington, District Of Columbia, licensed in District Of Columbia (DEN2000525) and active in the NPI registry since April 2021.

NPPES Registry Identity

NPI1487232294
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameJOHN ASHHURST TREHERNECredential: DDS
Location Address3925 MINNESOTA AVE NEWashington, DC 20019-2662
Mailing Address3925 Minnesota Ave NeWashington, DC 20019-2662
Phone(202) 396-1444
Sole ProprietorNo
Enumeration DateApril 1, 2021
Last NPPES UpdateDecember 4, 20255 updates tracked since enumeration
NPPES CertifiedDecember 4, 2025
✔ NPI 1487232294 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
Licenses✔ Licensed in DC · DEN2000525✔ Licensed in MS · 4364-23
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
3925 MINNESOTA AVE NE, Washington, DC 20019
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Other Identifiers 1

Medicaid018598598DC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Magnolia Health and more.Insurance ›

Other Providers at the Same Location NPPES 13

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

DENTAL DREAMS PLLC
Dentist (General Practice)
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (312) 274-4526
MICAH DICKERSON
Dentist
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (312) 274-4530
DR. SUNIL PATHAK DDS
Dentist (General Practice)
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (202) 396-1444
DR. SUJATHA VEMURI DDS
Dentist (General Practice)
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (703) 347-4577
MARYAM JAMALI D.D.S
Dentist (General Practice)
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (202) 396-1444
MAZIQUE INC.
Dentist
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (866) 242-0324
NICOLAI WARD
Dentist (General Practice)
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (202) 396-1444
ROBERT GUANCI D.D.S.
Dentist
3925 MINNESOTA AVE NE
WASHINGTON, DC 20019
District of Columbia (202) 396-1444

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 Treherne's NPI number?

The NPI number for John Treherne is 1487232294. It was assigned to this individual provider in the NPPES registry on April 1, 2021.

Where is John Treherne located?

John Treherne practices at 3925 Minnesota Ave NE, Washington, DC 20019. The listed phone number is (202) 396-1444.

What is John Treherne's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

What insurance does John Treherne accept?

Health plans from Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Magnolia Health, Ambetter of Alabama and Ambetter of Tennessee and 13 other insurers list John Treherne as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Treherne was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.