CLAYTON MEDICAL ASSOCIATES, P.C.
NPI 1891774329
Internal Medicine - Rheumatology in Saint Louis, MO
NPI Status: Active since January 12, 2006
Contact Information
520 S ELM AVE
SAINT LOUIS, MO
ZIP 63119
Phone: (314) 645-4434
Fax: (314) 645-3801
- Organization
- Internal Medicine
- Rheumatology
- Accepts Insurance
- CLIA Number: 26D0983231
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 04-26-2027
About CLAYTON MEDICAL ASSOCIATES, P.C.
This page provides the complete NPI Profile along with additional information for Clayton Medical Associates, P.c., an internist established in Saint Louis, Missouri operating as a Internal Medicine, focusing in rheumatology . The healthcare provider is registered in the NPI registry with number 1891774329 assigned on January 2006. The practitioner's primary taxonomy code is 207RR0500X. The provider is registered as an organization and their NPI record was last updated March 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The provider's
- NPI
- 1891774329
- Provider Legal Name
- CLAYTON MEDICAL ASSOCIATES, P.C.
- Other Organization Name
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 520 S ELM AVE SAINT LOUIS, MO 63119
- Location Phone
- (314) 645-4434
- Location Fax
- (314) 645-3801
- Mailing Address
- 520 S ELM AVE SAINT LOUIS, MO 63119
- Mailing Phone
- (314) 645-4434
- Mailing Fax
- (314) 645-3801
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 01-12-2006
- Last Update Date
- 03-19-2026
- Code Navigator
An internist like Clayton Medical Associates, P.c. is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
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
Internal Medicine Rheumatology
- Taxonomy Code
- 207RR0500X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Choice Bronze HSA (QualChoice) - POS
- Complete Gold - PPO
- Complete Gold + Vision + Adult Dental - PPO
- Connected Silver - PPO
- Connected Silver (QualChoice) - POS
- Connected Silver (QualChoice) + Vision + Adult Dental - POS
- Connected Silver (QualChoiceLife) - PPO
- Connected Silver (QualChoiceLife) + Vision + Adult Dental - PPO
- Connected Silver + Vision + Adult Dental - PPO
- Elite Bronze - PPO
- Complete Gold - EPO
- Complete Gold + Vision + Adult Dental - EPO
- Complete Silver - EPO
- Complete Silver + Vision + Adult Dental - EPO
- Elite Bronze - EPO
- Elite Bronze + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Everyday Gold - EPO
- Everyday Gold + Vision + Adult Dental - EPO
- Elite Bronze - EPO
- Elite Bronze + Vision + Adult Dental - EPO
- Elite Gold - EPO
- Elite Gold + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Everyday Gold - EPO
- Everyday Gold + Vision + Adult Dental - EPO
- Focused Silver - EPO
- Focused Silver + Vision + Adult Dental - EPO
- Choice Bronze HSA - EPO
- Choice Bronze HSA + Vision + Adult Dental - EPO
- Clear Gold - EPO
- Clear Gold + Vision + Adult Dental - EPO
- Complete Gold - HMO
- Complete Gold + Vision + Adult Dental - HMO
- Elite Bronze - EPO
- Elite Bronze - HMO
- Elite Bronze + Vision + Adult Dental - EPO
- Elite Bronze + Vision + Adult Dental - HMO
- Clear Gold - EPO
- Clear Gold + Vision + Adult Dental - EPO
- Complete Gold - EPO
- Complete Gold + Vision + Adult Dental - EPO
- Elite Silver - EPO
- Elite Silver + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Focused Silver - EPO
- Focused Silver + Vision + Adult Dental - EPO
- Elite Bronze - PPO
- Elite Bronze + Vision + Adult Dental - PPO
- Elite Gold - PPO
- Elite Gold + Vision + Adult Dental - PPO
- Enhanced Asthma/COPD Care Silver with $0 Drug Options - PPO
- Enhanced Asthma/COPD Care Silver with $0 Drug Options + Vision + Adult Dental - PPO
- Enhanced Diabetes Care Silver with $0 Drug Options - PPO
- Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - PPO
- Everyday Bronze - PPO
- Everyday Bronze + Vision + Adult Dental - PPO
- Elite Bronze - EPO
- Elite Bronze + Vision + Adult Dental - EPO
- Elite Gold - EPO
- Elite Gold + Vision + Adult Dental - EPO
- Enhanced Diabetes Care Silver with $0 Drug Options - EPO
- Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Everyday Gold - EPO
- Everyday Gold + Vision + Adult Dental - EPO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
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
- 26D0983231
- Facility Type
- Physician Office
- Certificate Effective Date
- April 27, 2025
- Certificate Expiration Date
- April 26, 2027
- Laboratory Director
- CHAD M. RONHOLM
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to Clayton Medical Associates, P.c. 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.
Reviews for CLAYTON MEDICAL ASSOCIATES, P.C.
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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 1891774329, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).
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 71 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 14 providers are registered at the same or a nearby location.
WEBSTER GROVES, MO 63119
WEBSTER GROVES, MO 63119
WEBSTER GROVES, MO 63119
SAINT LOUIS, MO 63119
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1891774329, enumerated as an "organization" on January 12, 2006.
The provider is located at 520 S ELM AVE SAINT LOUIS, MO 63119 and the phone number is (314) 645-4434.
Internal Medicine with taxonomy code 207RR0500X and a focus in Rheumatology.
The provider might be accepting Accepts: Ambetter from Arkansas Health & Wellness, Ambetter. Please consult your insurance carrier or call the provider to verify.
