CLAYTON SPECIALISTS
NPI 1144430281
Clinic/Center - Medical Specialty in Saint Louis, MO
NPI Status: Active since May 23, 2007
Contact Information
1035 BELLEVUE AVE
SUITE 500
SAINT LOUIS, MO
ZIP 63117
Phone: (314) 647-1115
Fax: (314) 544-1209
- Organization
- Clinic/Center
- Medical Specialty
- CLIA Number: 26D1023074
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 03-07-2028
About CLAYTON SPECIALISTS
This page provides the complete NPI Profile along with additional information for Clayton Specialists, a provider established in Saint Louis, Missouri operating as a Clinic/center, focusing in medical specialty . The healthcare provider is registered in the NPI registry with number 1144430281 assigned on May 2007. The practitioner's primary taxonomy code is 261QM2500X. The provider is registered as an organization and their NPI record was last updated 19 years ago. The provider's is doing business as Clayton Specialists. The authorized official of this NPI record is Mr. Ronald Dean Pierson (Executive Director)
- NPI
- 1144430281
- Provider Legal Name
- SSM MEDICAL GROUP
- Other Organization Name
- CLAYTON SPECIALISTS
- Other Name Type
- Doing Business As (3)
- Entity Type
- Organization
- Location Address
- 1035 BELLEVUE AVE SUITE 500 SAINT LOUIS, MO 63117
- Location Phone
- (314) 647-1115
- Location Fax
- (314) 544-1209
- Mailing Address
- 7980 CLAYTON RD SUITE 202 SAINT LOUIS, MO 63117
- Mailing Phone
- (314) 951-5368
- Mailing Fax
- (314) 544-1209
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-23-2007
- Last Update Date
- 11-27-2007
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Clinic/Center Medical Specialty
- Taxonomy Code
- 261QM2500X
- Type
- Ambulatory Health Care Facilities
- Taxonomy Description
- 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).
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 26D1023074
- Facility Type
- Physician Office
- Certificate Effective Date
- March 08, 2026
- Certificate Expiration Date
- March 07, 2028
- Laboratory Director
- SUSAN M. IRVINE
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to Clayton Specialists to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1144430281, we treat the final digit (1) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 59 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1144430281, enumerated as an "organization" on May 23, 2007.
The provider is located at 1035 BELLEVUE AVE SUITE 500 SAINT LOUIS, MO 63117 and the phone number is (314) 647-1115.
Clinic/Center with taxonomy code 261QM2500X and a focus in Medical Specialty.
