John Ashhurst Treherne, DDS

Primary specialty

General Practice DentistryTaxonomy code 1223G0001X

License

DEN2000525 Issued in DC

Practice address

3925 Minnesota Ave NE
Washington, DC 20019-2662

Phone

(202) 396-1444

NPI assigned

Apr 1, 2021

Last updated

Dec 4, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1617235200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764806400000",
    "number": "1487232294",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3925 MINNESOTA AVE NE",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200192662"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3925 MINNESOTA AVE NE",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200192662",
            "telephone_number": "202-396-1444"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TREHERNE",
        "first_name": "JOHN",
        "middle_name": "ASHHURST",
        "credential": "DDS",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-01",
        "last_updated": "2025-12-04",
        "certification_date": "2025-12-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "DC",
            "license": "DEN2000525",
            "primary": true
        },
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "MS",
            "license": "4364-23",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "018598598",
            "state": "DC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Treatment 1
• Tree of Life Community PCS
• Lucy Davies Treene, PA-C
• Trego Financial, Inc.
• Sahil Trehan, DDS
• Alexander Jon Trei
• Dana Treistman, PH.D.
• Roberto Daniel Trejo
• Roxana L Trejo, RN
• Sergio Trejo Jr., MD, MPH

• General Practice Dentistry in Washington, DC
• Providers in Washington, DC by specialty
• General Practice Dentistry in District of Columbia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.