Individual provider Active NPI

William Barnard Clem III, M.D.

  • Emergency Medicine Physician
  • Denver, CO
National Provider Identifier
1700862505
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
29361 Issued in CO
Practice address
1719 E 19TH Ave
Hyperbaric Medicine Center, P/SL Medical Center
Denver, CO 80218
Phone
(303) 839-6900
Fax
(303) 839-6157
NPI assigned
Dec 22, 2005
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 29361 CO Primary
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician 2083P0011X 29361 CO

Addresses

Primary practice location

1719 E 19TH Ave
Hyperbaric Medicine Center, P/SL Medical Center
Denver, CO 80218

Mailing address

PO Box 260155
Littleton, CO 80163-0155
Phone (303) 471-1634

Other identifiers 1

IdentifierTypeStateIssuer
04004891MedicaidCO

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)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
29361COMDEmergency Medicine Physician

NPI Registry JSON

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

{
    "created_epoch": "1135209600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1700862505",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 260155",
            "city": "LITTLETON",
            "state": "CO",
            "postal_code": "801630155",
            "telephone_number": "303-471-1634",
            "fax_number": "720-344-5586"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1719 E 19TH AVE",
            "address_2": "HYPERBARIC MEDICINE CENTER, P/SL MEDICAL CENTER",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "80218",
            "telephone_number": "303-839-6900",
            "fax_number": "303-839-6157"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CLEM",
        "first_name": "WILLIAM",
        "middle_name": "BARNARD",
        "name_prefix": "Dr.",
        "name_suffix": "III",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-22",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CO",
            "license": "29361",
            "primary": true
        },
        {
            "code": "2083P0011X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Undersea and Hyperbaric Medicine",
            "state": "CO",
            "license": "29361",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "04004891",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Denver, CO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.