Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John David Mason, PA-C
Physician Assistant in Danville, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811949118
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Registry record
Entity type Individual (Type 1)
Name John David Mason
Credential PA-C
Sex Male
Practice address 2713 Townway Rd, Danville, IL, 61832
Phone (214) 708-0230
Enumeration date May 16, 2006
Last updated in NPPES May 8, 2009
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085-000630 (IL) Primary
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 John Mason's NPI record?
Cross-check NPI 1811949118 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1811949118 active?
Yes, as of the latest NPPES snapshot, NPI 1811949118 is active (record last updated 2009-05-08).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-08.