NPIMap

Organization Active NPI

Tri-County Emergency Physicians, LTD

  • Emergency Medicine Physician
  • Barrington, IL
National Provider Identifier
1700810470
Registry record updated Feb 27, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
Legal business name
TRI-COUNTY EMERGENCY PHYSICIANS, LTD
Practice address
450 W Highway 22
Barrington, IL 60010-1919
Phone
(847) 381-9600
NPI assigned
Jul 10, 2006
Last updated
Feb 27, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Feb 27, 2026

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

Authorized official

Name
Mark Thompson, MDNPI 1043252067
Title
President
Phone
(815) 479-8020

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X NU
Emergency Medicine Physician 207P00000X NU Primary

Addresses

Primary practice location

450 W Highway 22
Barrington, IL 60010-1919

Mailing address

PO Box 920128
Dallas, TX 75392-0128
Phone (877) 346-2211

Other identifiers 2

IdentifierTypeStateIssuer
CL4038OtherRAILROAD MEDICARE
0001618215OtherILBCBS

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20050131000438 IL Part B Supplier - Clinic/Group Practice 2567412240 Receives reassigned benefits from 52 practitioners
Practice locations: Barrington, IL

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 66

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.

View all 66

NPI Registry JSON

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

{
    "created_epoch": "1152489600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1772150400000",
    "number": "1700810470",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 920128",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "753920128",
            "telephone_number": "877-346-2211"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 W HIGHWAY 22",
            "city": "BARRINGTON",
            "state": "IL",
            "postal_code": "600101919",
            "telephone_number": "847-381-9600"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TRI-COUNTY EMERGENCY PHYSICIANS, LTD",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-07-10",
        "last_updated": "2026-02-27",
        "certification_date": "2026-02-27",
        "status": "A",
        "authorized_official_last_name": "THOMPSON",
        "authorized_official_first_name": "MARK",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "815-479-8020",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "CL4038",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "0001618215",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Barrington, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 27, 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.