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John Gottfried Mayer, MD

Orthopaedic Surgery Physician in Gurnee, IL · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1194716985

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Registry record

Entity type Individual (Type 1)
Name John Gottfried Mayer
Credential MD
Sex Male
Practice address 105 N Greenleaf St, Gurnee, IL, 60031
Phone (847) 623-3090
Fax (847) 623-9620
Enumeration date Nov 2, 2005
Last updated in NPPES Mar 11, 2008

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians Primary
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
04915144 Other IL BCBS OF ILLINOIS

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

Is NPI 1194716985 active?
Yes, as of the latest NPPES snapshot, NPI 1194716985 is active (record last updated 2008-03-11).
How do I verify John Mayer's NPI record?
Cross-check NPI 1194716985 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-11.