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DR. MARK R. TERRELL M.D.
NPI 1194764621
Anesthesiology in Wheaton, IL

Active since June 06, 2006PECOS Enrolled
417 N ARBORETUM CIR, WHEATON, IL 60189(630) 364-6564 Get Directions Write a Review

NPPES record last updated: March 18, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mark R. Terrell M.d. NPPES

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

DR. MARK R. TERRELL M.D. (NPI 1194764621) is an individual anesthesiology provider in Wheaton, Illinois, licensed in Illinois (036089479) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194764621
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. MARK R. TERRELLCredential: M.D.
Location Address417 N ARBORETUM CIRWheaton, IL 60189-8703
Mailing Address417 N Arboretum CirWheaton, IL 60189-8703 · (630) 364-6564
Phone(630) 364-6564
Sole ProprietorNo
Enumeration DateJune 6, 2006
Last NPPES UpdateMarch 18, 2015
✔ NPI 1194764621 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in IL · 036089479
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
417 N ARBORETUM CIR, Wheaton, IL 60189
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Other Identifiers 3

Medicare UPING83972IL
Medicare ID-Type UnspecifiedL88482IL
Medicaid036089479IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark R. Terrell M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Mark Terrell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Clinical Colleagues LLC
132 mi
Anesthesiology
695 N KELLOGG ST
Galesburg, IL 61401
  • Reassigned Medicare billing, Illinois enrollment
  • 142 clinicians in this Medicare group
NPI 1316399967 (800) 494-3964
Northstar Anesthesia Of Illinois, LLC
796 mi
Anesthesiology
2000 E LAMAR BLVD STE 400
Arlington, TX 76006
  • Reassigned Medicare billing, Illinois enrollment
  • 735 clinicians in this Medicare group
NPI 1962822395 (817) 583-7421

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 Mark Terrell's NPI number?

The NPI number for Mark Terrell is 1194764621. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Mark Terrell located?

Mark Terrell practices at 417 N Arboretum Cir, Wheaton, IL 60189. The listed phone number is (630) 364-6564.

What is Mark Terrell's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Mark Terrell enrolled in Medicare?

Yes. Mark Terrell is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Terrell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Terrell reassigns Medicare benefits to 2 organizations: Clinical Colleagues LLC (Galesburg, IL) and Northstar Anesthesia Of Illinois, LLC (Arlington, TX). Each 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 Mark Terrell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Terrell was last updated on March 18, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.