SSM MEDICAL GROUP, INC.
NPI 1851896146
Clinic/Center in O Fallon, MO
About Ssm Medical Group, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SSM MEDICAL GROUP, INC. (NPI 1851896146), doing business as Ssm Health Express Clinic, is a healthcare organization registered as a clinic/center in O Fallon, Missouri and active in the NPI registry since March 2018. The organization maintains 4 additional practice locations and lists Eileen Lamm, Regional Vp Finance, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 4
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ssm Medical Group, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
706Medicare enrollment records show 706 clinicians reassign Medicare billing to Ssm Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 11 practice at this address and 131 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 46
Nearest to this location (20)
See all 706Source: 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 Ssm Medical Group, Inc.'s NPI number?
The NPI number for Ssm Medical Group, Inc. is 1851896146. It was assigned to this organization in the NPPES registry on March 28, 2018. The provider is doing business as SSM Health Express Clinic.
Where is Ssm Medical Group, Inc. located?
Ssm Medical Group, Inc. is located at 1101 Highway K Ste A, O Fallon, MO 63366. The listed phone number is (844) 766-7200.
What is Ssm Medical Group, Inc.'s specialty?
The primary specialty registered for this NPI is Clinic/Center with taxonomy code 261Q00000X.
Is Ssm Medical Group, Inc. enrolled in Medicare?
Yes. Ssm Medical Group, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Ssm Medical Group, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 706 clinicians in 46 Medicare specialties reassign their Medicare billing to Ssm Medical Group, Inc.. 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 Nurse Practitioner (234), Family Practice (83) and Internal Medicine (50). Of these, 11 practice at this address and 131 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Ssm Medical Group, Inc. accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Ssm Medical Group, Inc. 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 Ssm Medical Group, Inc. was last updated on November 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Ssm Medical Group, Inc. · NPI 1851896146
Clinic/Center organization in O Fallon, Missouri. Organization record, active in the CMS NPPES registry since March 28, 2018.
## Identity
- **NPI:** 1851896146 (Entity type: Organization)
- **Enumerated:** March 28, 2018
- **Primary specialty:** Clinic/Center · taxonomy 261Q00000X
- **Also known as:** SSM Health Express Clinic (Doing Business As)
- **Organization subpart:** Yes (part of Ssm Medical Group, Inc.)
- **Authorized official:** Eileen Lamm, REGIONAL VP FINANCE
## Practice location
- **Address:** 1101 HIGHWAY K STE A, O Fallon, MO 63366-8431
- **Phone:** (844) 766-7200
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 706 clinicians in 46 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (234), Family Practice (83), Internal Medicine (50); 11 practice at this address and 131 within 10 miles; [full list](https://npiprofile.com/npi/1851896146/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 7, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1851896146) · Data from the CMS NPPES public registry.