DR. BRET ALLEN RIEGEL M.D.
NPI 1851375323
Emergency Medicine in Washington, MO
About Dr. Bret Allen Riegel M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRET ALLEN RIEGEL M.D. (NPI 1851375323) is an individual emergency medicine provider in Washington, Missouri, licensed in Missouri (113187) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Bret Allen Riegel M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Bret Riegel reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 178 clinicians in this Medicare group
Troy, MO 63379
- Reassigned Medicare billing, Missouri enrollment
- 229 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1427098169 (Missouri)
- 435 clinicians in this Medicare group
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 186 clinicians in this Medicare group
Festus, MO 63028
- Reassigned Medicare billing, Missouri enrollment
- 118 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63090 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Bret Riegel's NPI number?
The NPI number for Bret Riegel is 1851375323. It was assigned to this individual provider in the NPPES registry on November 30, 2005.
Where is Bret Riegel located?
Bret Riegel practices at 501 E 5th St, Washington, MO 63090. The listed phone number is (636) 239-8000.
What is Bret Riegel's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Bret Riegel enrolled in Medicare?
Yes. Bret Riegel is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Bret Riegel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Bret Riegel reassigns Medicare benefits to 5 organizations: Mercy Hospitals East Communities (Washington, MO), Mercy Hospital Lincoln (Troy, MO), Mercy Hospitals East Communities (Saint Louis, MO), Mercy Hospital South (Saint Louis, MO) and Mercy Hospital Jefferson (Festus, MO). 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 Bret Riegel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Bret Riegel accept?
Health plans from Anthem Blue Cross and Blue Shield list Bret Riegel as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Bret Riegel was last updated on November 26, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.