NPIMap

Organization Active NPI

SSM Medical Group, Inc.

Doing business as SSM Health Express Clinic

  • Clinic/Center
  • O'Fallon, MO
National Provider Identifier
1851896146
Registry record updated Nov 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinic/CenterTaxonomy code 261Q00000X
Legal business name
SSM MEDICAL GROUP, INC.
Doing business as
SSM Health Express Clinic
Practice address
1101 Highway K Ste a
O Fallon, MO 63366-8431
Phone
(844) 766-7200
NPI assigned
Mar 28, 2018
Last updated
Nov 7, 2025By the provider in NPPES
Organization subpart
Yes
Parent organization
SSM MEDICAL GROUP, INC.As reported in NPPES

NPPES NPI Registry

Updated by the provider on Nov 7, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Eileen Lamm
Title
Regional VP Finance
Phone
(149) 946-2193

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinic/Center 261Q00000X Primary
Nurse Practitioner 363L00000X

Addresses

Primary practice location

1101 Highway K Ste a
O Fallon, MO 63366-8431

Mailing address

PO Box 955534
Saint Louis, MO 63195-5534

Other practice location 1

5503 Delmar Blvd Suite B
St Louis, MO 63112
Phone (844) 776-7200

Other practice location 2

1603 Wentzville Pkwy
Wentzville, MO 63385-3826
Phone (844) 776-7200

Other practice location 3

14021A New Halls Ferry Rd
Florissant, MO 63033-2708
Phone (844) 776-7200

Other practice location 4

1345 Smizer Mill Rd Ste 1350
Fenton, MO 63026-7305
Phone (844) 776-7200

Other names 1

  • SSM Health Express Clinic Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MO, IL2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
O20040729001034 MO Part B Supplier - Clinic/Group Practice 6608776299 Receives reassigned benefits from 742 practitioners
1 other NPI on this enrollment
This NPI is an additional NPI on the enrollment
O20150929002491 IL Part B Supplier - Clinic/Group Practice 6608776299 Receives reassigned benefits from 25 practitioners
1 other NPI on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: Shiloh, IL; Red Bud, IL; Alton, IL; O Fallon, IL; Nashville, IL; Maryville, IL; Granite City, IL; Glen Carbon, IL…

Other NPIs on the same Medicare enrollment 1

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
26D0672523SSM Medical Group St Clare Pediatrics1345 Smizer Mill Road, Suite 1200, Fenton, MO 63026Certificate of waiverMay 31, 2027
26D0974021SSM Medical Group - Smizer1345 Smizer MLL Road Suite 1100, Fenton, MO 63026Certificate of waiverMay 24, 2028

National Provider Directory

National Provider Directory
Tax ID family
St Mary Health Ctr18 organizations share this tax ID, including this one
Part of
St Mary Health Ctr

Other organizations with this tax ID 17

Organizations that report the same tax identification number in the National Provider Directory.

View all 17

Locations

325 W Lincoln St
Belleville, IL 62220
Phone (618) 225-2299

2133 Vadalabene Dr
Ste 6
Maryville, IL 62062
Phone (314) 738-2770

604 Pierce Blvd
Ste 150
O Fallon, IL 62269
Phone (618) 222-9244

Practitioners & affiliated clinicians

Practitioners 40

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 40

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1522195200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1762473600000",
    "number": "1851896146",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 955534",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631955534"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1101 HIGHWAY K STE A",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633668431",
            "telephone_number": "844-766-7200"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5503 Delmar Blvd Suite B",
            "address_purpose": "LOCATION",
            "city": "St Louis",
            "state": "MO",
            "postal_code": "63112",
            "country_code": "US",
            "telephone_number": "844-776-7200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1603 Wentzville Pkwy",
            "address_purpose": "LOCATION",
            "city": "Wentzville",
            "state": "MO",
            "postal_code": "633853826",
            "country_code": "US",
            "telephone_number": "844-776-7200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "14021A New Halls Ferry Rd",
            "address_purpose": "LOCATION",
            "city": "Florissant",
            "state": "MO",
            "postal_code": "630332708",
            "country_code": "US",
            "telephone_number": "844-776-7200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1345 Smizer Mill Rd Ste 1350",
            "address_purpose": "LOCATION",
            "city": "Fenton",
            "state": "MO",
            "postal_code": "630267305",
            "country_code": "US",
            "telephone_number": "844-776-7200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "SSM MEDICAL GROUP, INC.",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "SSM MEDICAL GROUP, INC.",
        "enumeration_date": "2018-03-28",
        "last_updated": "2025-11-07",
        "certification_date": "2025-11-07",
        "status": "A",
        "authorized_official_last_name": "LAMM",
        "authorized_official_first_name": "EILEEN",
        "authorized_official_title_or_position": "REGIONAL VP FINANCE",
        "authorized_official_telephone_number": "149-946-2193"
    },
    "taxonomies": [
        {
            "code": "261Q00000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "SSM Health Express Clinic",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "SSM Health Express Clinic",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in O'Fallon, MO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 7, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.