Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Mr. Mark C Baylor, MD
Family Medicine Physician in Elmwood, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740256700
See something wrong? Report a correction
Registry record
Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036069541 | Medicaid | IL | - |
| IL0102 | Other | IL | JOHN DEERE |
| 7200613 | Other | IL | BCBS OF ILLINOIS |
| 001414 | Other | IL | HEALTH ALLIANCE |
| 198663 | Other | IL | HEALTHLINK |
| 80153581 | Other | GA | RR MEDICARE |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
How do I verify Mark Baylor's NPI record?
Is NPI 1740256700 active?
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-29.