NPIMap

Organization Active NPI

Marathon Health, LLC

Doing business as Marathon Health, Sunnyvale CA

  • Clinic/Center
  • Sunnyvale, CA
National Provider Identifier
1659276400
Registry record updated Oct 12, 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, Sunnyvale CA
Practice address
1283 Oakmead Pkwy Ste B
Sunnyvale, CA 94085-4040
Phone
(408) 675-2010
NPI assigned
Oct 12, 2026
Last updated
Oct 12, 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 12, 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

1283 Oakmead Pkwy Ste B
Sunnyvale, CA 94085-4040

Mailing address

PO Box 1433
Portsmouth, NH 03802-1433

Other names 1

  • Marathon Health, Sunnyvale CA Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Marathon Health Inc235 organizations share this tax ID, including this one

Organizations with this tax ID in the same state 3

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

Locations

1283 Oakmead Pkwy
Ste B
Sunnyvale, CA 94085
Phone (408) 675-2010

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1791763200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1791763200000",
    "number": "1659276400",
    "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": "1283 OAKMEAD PKWY STE B",
            "city": "SUNNYVALE",
            "state": "CA",
            "postal_code": "940854040",
            "telephone_number": "408-675-2010"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARATHON HEALTH, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "EVERSIDE HEALTH LLC",
        "enumeration_date": "2026-10-12",
        "last_updated": "2026-10-12",
        "certification_date": "2026-10-12",
        "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, Sunnyvale CA",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Sunnyvale, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 12, 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.