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CLAYTON SPECIALISTS
NPI 1144430281
Clinic/Center - Medical Specialty in Saint Louis, MO

Active since May 23, 2007CLIA 26D1023074 · Waiver
1035 BELLEVUE AVE, SUITE 500, SAINT LOUIS, MO 63117(314) 647-1115(314) 544-1209 Get Directions Write a Review

NPPES record last updated: November 27, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Clayton Specialists NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CLAYTON SPECIALISTS (NPI 1144430281) is a healthcare organization registered as a medical specialty in Saint Louis, Missouri and active in the NPI registry since May 2007. The organization holds a CLIA Waiver certificate valid through March 7, 2028 and lists Ronald Dean Pierson, Executive Director, as its authorized official.

NPPES Registry Identity

NPI1144430281
Entity TypeOrganization
Primary Taxonomy261QM2500X
Legal Business NameSSM MEDICAL GROUP
Location Address1035 BELLEVUE AVE, SUITE 500Saint Louis, MO 63117-1854
Mailing Address7980 Clayton Rd, Suite 202Saint Louis, MO 63117-1354 · (314) 951-5368 · Fax (314) 951-5238
Phone(314) 647-1115
Fax(314) 544-1209
Organization SubpartNo
Authorized OfficialRonald Dean PiersonExecutive Director · (314) 951-5520
Enumeration DateMay 23, 2007
Last NPPES UpdateNovember 27, 2007
✔ NPI 1144430281 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Medical SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM2500X
Definition
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer).
1035 BELLEVUE AVE, Saint Louis, MO 63117
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Other Names 1

Doing Business AsClayton Specialists

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 26D1023074

Ssm Medical Group · Saint Louis, MO
Active · expires Mar 7, 2028
CLIA Number26D1023074
Laboratory TypePhysician Office
Certificate Effective DateMarch 8, 2026
Certificate Expiration DateMarch 7, 2028
Laboratory DirectorSusan M. Irvine
Laboratory Phone(314) 647-1115
Laboratory LocationSsm Medical Group1035 Bellevue Ave, Ste 400, Saint Louis, MO 63117
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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.

MRS. JUDITH ANN DIETZLER RPH
Pharmacist
1035 BELLEVUE AVE, CLAYTON HEALTH SERVICES PHARMACY
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
SSM HEALTH CARE ST LOUIS
Pharmacy (Community/Retail Pharmacy)
1035 BELLEVUE AVE
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
SSM MEDICAL GROUP
Clinic/Center
1035 BELLEVUE AVE, SUITE 305
SAINT LOUIS, MO 63117
St. Louis County (314) 644-6161
GENERATIONS FAMILY MEDICINE PC
Family Medicine
1035 BELLEVUE AVE, SUITE 206
ST LOUIS, MO 63117
St. Louis County (314) 781-4922
WELLNESS HEALTHCARE ASSOCIATES, INC
Family Medicine
1035 BELLEVUE AVE, STE 401
SAINT LOUIS, MO 63117
St. Louis County (314) 781-0361
SSM MEDICAL GROUP
Clinic/Center
1035 BELLEVUE AVE, SUITE 502
SAINT LOUIS, MO 63117
St. Louis County (314) 638-3600
DAVID ALAN WACHTER RPH
Pharmacist
1035 BELLEVUE AVE
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
KNIGHT INTERNISTS, INC
Internal Medicine
1035 BELLEVUE AVE, SUITE 205
ST. LOUIS, MO 63117
St. Louis County (314) 645-3400

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's NPI number?

The NPI number for Ssm Medical Group is 1144430281. It was assigned to this organization in the NPPES registry on May 23, 2007. The provider is doing business as Clayton Specialists.

Where is Ssm Medical Group located?

Ssm Medical Group is located at 1035 Bellevue Ave Suite 500, Saint Louis, MO 63117. The listed phone number is (314) 647-1115.

What is Ssm Medical Group's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.

Does Ssm Medical Group hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 26D1023074) is associated with this NPI, valid through March 7, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Ssm Medical Group was last updated on November 27, 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.