Individual provider Active NPI

Timothy H Holtz

  • Internal Medicine Physician
  • Washington, DC
National Provider Identifier
1235001793
Registry record updated Sep 23, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
48427 Issued in GA
Practice address
950 New Hampshire Ave NW
Washington, DC 20037-2301
Phone
(202) 994-3624
NPI assigned
Sep 23, 2025
Last updated
Sep 23, 2025By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 23, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 48427 GA Primary

Addresses

Primary practice location

950 New Hampshire Ave NW
Washington, DC 20037-2301

Mailing address

950 New Hampshire Ave NW
Washington, DC 20037-2301
Phone (202) 994-3624

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
48427GAMDInternal Medicine Physician

NPI Registry JSON

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

{
    "created_epoch": "1758585600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758585600000",
    "number": "1235001793",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "950 NEW HAMPSHIRE AVE NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200372301",
            "telephone_number": "202-994-3624"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "950 NEW HAMPSHIRE AVE NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200372301",
            "telephone_number": "202-994-3624"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLTZ",
        "first_name": "TIMOTHY",
        "middle_name": "H",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-09-23",
        "last_updated": "2025-09-23",
        "certification_date": "2025-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "GA",
            "license": "48427",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 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.