NPIMap

Organization Active NPI

Portercare Adventist Health System

Doing business as AdventHealth Radiation Oncology Littleton

  • Radiation Oncology Physician
  • Littleton, CO
National Provider Identifier
1669114500
Registry record updated Aug 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology PhysicianTaxonomy code 2085R0001X
Legal business name
PORTERCARE ADVENTIST HEALTH SYSTEM
Doing business as
AdventHealth Radiation Oncology Littleton
Practice address
7750 S Broadway Ste G20
Littleton, CO 80122-2637
Phone
(303) 347-5305
NPI assigned
Apr 11, 2022
Last updated
Aug 12, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 12, 2026

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

Authorized official

Name
Mr. Jason Tacha
Title
Coo
Phone
(303) 304-7752

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology Physician 2085R0001X Primary

Addresses

Primary practice location

7750 S Broadway Ste G20
Littleton, CO 80122-2637

Mailing address

PO Box 713425
Chicago, IL 60677-4325
Phone (800) 953-0104

Other names 2

  • AdventHealth Radiation Oncology Littleton Doing business as
  • Centura Radiation Oncology Littleton Other name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CO

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20090115000327 CO Part B Supplier - Clinic/Group Practice 0941110886 Receives reassigned benefits from 869 practitioners
This NPI is an additional NPI on the enrollment

National Provider Directory

National Provider Directory
Tax ID family
Arapahoe Medical Labora217 organizations share this tax ID, including this one

Organizations with this tax ID in the same state 24

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

View all 24

Practitioners & affiliated clinicians

Practitioners 7

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": "1649635200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786492800000",
    "number": "1669114500",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 713425",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606774325",
            "telephone_number": "800-953-0104",
            "fax_number": "303-765-6670"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7750 S BROADWAY STE G20",
            "city": "LITTLETON",
            "state": "CO",
            "postal_code": "801222637",
            "telephone_number": "303-347-5305"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "PORTERCARE ADVENTIST HEALTH SYSTEM",
        "organizational_subpart": "NO",
        "enumeration_date": "2022-04-11",
        "last_updated": "2026-08-12",
        "certification_date": "2026-08-12",
        "status": "A",
        "authorized_official_last_name": "TACHA",
        "authorized_official_first_name": "JASON",
        "authorized_official_title_or_position": "COO",
        "authorized_official_telephone_number": "303-304-7752",
        "authorized_official_name_prefix": "Mr."
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "AdventHealth Radiation Oncology Littleton",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Centura Radiation Oncology Littleton",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Littleton, CO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 12, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.