ADDERLEY MEDICAL GROUP, L.L.C.
NPI 1134433659
General Practice in Festus, MO
About Adderley Medical Group, L.l.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ADDERLEY MEDICAL GROUP, L.L.C. (NPI 1134433659) is a healthcare organization registered as a general practice in Festus, Missouri and active in the NPI registry since July 2010. The organization lists Mark Floyd Adderley, Member, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Adderley Medical Group, L.l.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Adderley Medical Group, L.L.C., which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Adderley Medical Group, L.L.C.'s NPI number?
The NPI number for Adderley Medical Group, L.L.C. is 1134433659. It was assigned to this organization in the NPPES registry on July 27, 2010.
Where is Adderley Medical Group, L.L.C. located?
Adderley Medical Group, L.L.C. is located at 1400 Us Highway 61, Festus, MO 63028. The listed phone number is (314) 288-9161.
What is Adderley Medical Group, L.L.C.'s specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Adderley Medical Group, L.L.C. enrolled in Medicare?
Yes. Adderley Medical Group, L.L.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Adderley Medical Group, L.L.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Physical Medicine and Rehabilitation) reassigns their Medicare billing to Adderley Medical Group, L.L.C.. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Adderley Medical Group, L.L.C. was last updated on June 12, 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.
# Adderley Medical Group, L.l.c. · NPI 1134433659
General Practice organization in Festus, Missouri. Organization record, active in the CMS NPPES registry since July 27, 2010.
## Identity
- **NPI:** 1134433659 (Entity type: Organization)
- **Enumerated:** July 27, 2010
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **Organization subpart:** No
- **Authorized official:** Mark Adderley, MEMBER
## Practice location
- **Address:** 1400 US HIGHWAY 61, Festus, MO 63028-4100
- **Phone:** (314) 288-9161
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Physical Medicine and Rehabilitation) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 12, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1134433659) · Data from the CMS NPPES public registry.