DEREK RICHARD ST LOUIS MD
NPI 1467947762
Radiology - Diagnostic Radiology in Troy, MI
About Derek Richard St Louis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEREK RICHARD ST LOUIS MD (NPI 1467947762) is an individual diagnostic radiology provider in Troy, Michigan, licensed in Michigan (4301115571) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS, is affiliated with Beaumont Hospital - Grosse Pointe, and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Derek Richard St Louis Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Derek St Louis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Royal Oak, MI 48073
- Reassigned Medicare billing, Michigan enrollment
- 946 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 13
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beaumont Hospital - Grosse Pointe
Acute Care Hospitals · Grosse Pointe, MIBeaumont Hospital Royal Oak
Acute Care Hospitals · Royal Oak, MIBeaumont Hospital - Farmington Hills
Acute Care Hospitals · Farmington Hills, MIBeaumont Hospital, Troy
Acute Care Hospitals · Troy, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48085 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TROY, MI 48085
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 Derek St Louis's NPI number?
The NPI number for Derek St Louis is 1467947762. It was assigned to this individual provider in the NPPES registry on June 28, 2018.
Where is Derek St Louis located?
Derek St Louis practices at 44201 Dequindre Rd, Troy, MI 48085. The listed phone number is (248) 964-5000.
What is Derek St Louis's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Derek St Louis enrolled in Medicare?
Yes. Derek St Louis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Derek St Louis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek St Louis reassigns Medicare benefits to Beaumont Medical Group Hospital -Based Services (Royal Oak, MI). The 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 Derek St Louis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Derek St Louis accept?
Health plans from Priority Health list Derek St Louis 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.
Is Derek St Louis affiliated with any hospitals?
According to CMS data, Derek St Louis is affiliated with Beaumont Hospital - Grosse Pointe, Beaumont Hospital Royal Oak, Beaumont Hospital - Farmington Hills and Beaumont Hospital, Troy.
When was this NPI record last updated?
The NPPES record for Derek St Louis was last updated on June 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.