TRI-COUNTY EMERGENCY PHYSICIANS, LTD
NPI 1700810470
Emergency Medicine in Barrington, IL

Active since July 10, 2006
450 W HIGHWAY 22, BARRINGTON, IL 60010(847) 381-9600 Get Directions Write a Review

NPPES record last updated: February 27, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 3, 2025, Jun 18, 2025, Feb 28, 2025 (3 updates tracked since 2025).

About Tri-county Emergency Physicians, Ltd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TRI-COUNTY EMERGENCY PHYSICIANS, LTD (NPI 1700810470) is a healthcare organization registered as an emergency medicine in Barrington, Illinois and active in the NPI registry since July 2006. The organization lists Mark Thompson, President, as its authorized official.

NPPES Registry Identity

NPI1700810470
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameTRI-COUNTY EMERGENCY PHYSICIANS, LTD
Location Address450 W HIGHWAY 22Barrington, IL 60010-1919
Mailing AddressPo Box 920128Dallas, TX 75392-0128 · (877) 346-2211
Organization SubpartNo
Authorized OfficialMark ThompsonPresident · (815) 479-8020
Enumeration DateJuly 10, 2006
Last NPPES UpdateFebruary 27, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 27, 2026
✔ NPI 1700810470 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedAnesthesiologyTaxonomy 207L00000X
450 W HIGHWAY 22, Barrington, IL 60010

Other Identifiers 2

OtherCL4038Railroad Medicare
Other0001618215IL · Bcbs

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tri-county Emergency Physicians, Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

38

Medicare enrollment records show 38 clinicians reassign Medicare billing to Tri-County Emergency Physicians, Ltd, which bills Medicare for the services they deliver. Of these, 16 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Emergency Medicine26
Nurse Practitioner7
Family Practice5

Nearest to this location (20)

See all 38
Emergency Medicine
NPI 1952414682
450 W HIGHWAY 22
Barrington, IL 60010
(847) 842-4488
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1023022555
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1215948153
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1598705659
450 W HIGHWAY 22
Barrington, IL 60010
(847) 842-4488
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1720092117
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1649224973
450 W HIGHWAY 22
Barrington, IL 60010
(847) 842-4444
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1770894263
450 W HIGHWAY 22
Barrington, IL 60010
(847) 842-4444
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1598818395
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1659385185
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS0.5 mi
Emergency Medicine
NPI 1295174134
450 W IL 22
Barrington, IL 60010
(847) 842-4444
✔ PECOS✔ Accepts Medicare0.5 mi
Emergency Medicine
NPI 1225081037
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS2.0 mi
Emergency Medicine
NPI 1043252067
450 W HIGHWAY 22
Barrington, IL 60010
(847) 381-9600
✔ PECOS2.0 mi
Family Practice
NPI 1821319591
350 SURRYSE RD
Lake Zurich, IL 60047
(847) 438-2144
✔ PECOS✔ Accepts Medicare2.5 mi
Family Practice
NPI 1417941725
350 SURRYSE RD SUITE 100
Lake Zurich, IL 60047
(847) 438-2144
✔ PECOS✔ Accepts Medicare2.5 mi
Nurse Practitioner
NPI 1356739452
525 E CONGRESS PKWY
Crystal Lake, IL 60014
(630) 962-6280
✔ PECOS✔ Accepts Medicare9.0 mi
Nurse Practitioner
NPI 1538790266
525 E CONGRESS PKWY
Crystal Lake, IL 60014
(815) 479-8020
✔ PECOS✔ Accepts Medicare9.0 mi
Nurse Practitioner
NPI 1255985164
979 W MAIN ST
West Dundee, IL 60118
(224) 802-2680
✔ PECOS✔ Accepts Medicare10 mi
Emergency Medicine
NPI 1760442172
1325 N MEACHAM RD
Schaumburg, IL 60173
(888) 693-6437
✔ PECOS✔ Accepts Medicare11 mi
Emergency Medicine
NPI 1104879071
801 S MILWAUKEE AVE
Libertyville, IL 60048
(847) 990-5300
✔ PECOS✔ Accepts Medicare12 mi
Family Practice
NPI 1063788107
10350 HALIGUS RD STE A
Huntley, IL 60142
(847) 802-7500
✔ PECOS✔ Accepts Medicare14 mi
See all 38 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tri-County Emergency Physicians, Ltd's NPI number?

The NPI number for Tri-County Emergency Physicians, Ltd is 1700810470. It was assigned to this organization in the NPPES registry on July 10, 2006.

Where is Tri-County Emergency Physicians, Ltd located?

Tri-County Emergency Physicians, Ltd is located at 450 W Highway 22, Barrington, IL 60010. The listed phone number is (847) 381-9600.

What is Tri-County Emergency Physicians, Ltd's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Tri-County Emergency Physicians, Ltd enrolled in Medicare?

Yes. Tri-County Emergency Physicians, Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Tri-County Emergency Physicians, Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 38 clinicians in 3 Medicare specialties reassign their Medicare billing to Tri-County Emergency Physicians, Ltd. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Emergency Medicine (26), Nurse Practitioner (7) and Family Practice (5). Of these, 16 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Tri-County Emergency Physicians, Ltd was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.