NPI Portal NPI Lookup & Verification

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

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Registry record

Entity type Individual (Type 1)
Name Mr. Mark C Baylor
Credential MD
Sex Male
Practice address Elmwood, IL, 61529
Fax (309) 742-8411
Enumeration date Feb 28, 2006
Last updated in NPPES Sep 29, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036069541 (IL) Primary
207QG0300X Geriatric Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 036069541 (IL) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

How do I verify Mark Baylor's NPI record?
Cross-check NPI 1740256700 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1740256700 active?
Yes, as of the latest NPPES snapshot, NPI 1740256700 is active (record last updated 2010-09-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-29.