NPIMap

Organization Active NPI

Marathon Health, LLC

Doing business as Marathon Health, Denver CO- 15th St

  • Clinic/Center
  • Denver, CO
National Provider Identifier
1023913266
Registry record updated Oct 8, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinic/CenterTaxonomy code 261Q00000X
Legal business name
MARATHON HEALTH, LLC
Doing business as
Marathon Health, Denver CO- 15th St
Practice address
1783 15TH St
Denver, CO 80202-1888
Phone
(303) 532-1536
NPI assigned
Oct 8, 2026
Last updated
Oct 8, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
EVERSIDE HEALTH LLCAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Oct 8, 2026

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

Authorized official

Name
Terry Layman
Title
Owner
Phone
(866) 434-3255

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinic/Center 261Q00000X Primary

Addresses

Primary practice location

1783 15TH St
Denver, CO 80202-1888

Mailing address

PO Box 1433
Portsmouth, NH 03802-1433

Other names 1

  • Marathon Health, Denver CO- 15th St Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Marathon Health LLC235 organizations share this tax ID, including this one
Part of
Everside Health Sacramento

Organizations with this tax ID in the same state 13

This tax ID family is large, so up to 24 of its organizations in the same state are linked here.

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1791417600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1791417600000",
    "number": "1023913266",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1433",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038021433"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1783 15TH ST",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802021888",
            "telephone_number": "303-532-1536"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARATHON HEALTH, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "EVERSIDE HEALTH LLC",
        "enumeration_date": "2026-10-08",
        "last_updated": "2026-10-08",
        "certification_date": "2026-10-08",
        "status": "A",
        "authorized_official_last_name": "LAYMAN",
        "authorized_official_first_name": "TERRY",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "866-434-3255"
    },
    "taxonomies": [
        {
            "code": "261Q00000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Marathon Health, Denver CO- 15th St",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

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 Oct 8, 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.