Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Griffith Linn, MD
Surgery Physician in Glenview, IL · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750538880
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Registry record
Entity type Individual (Type 1)
Name John Griffith Linn
Credential MD
Sex Male
Practice address 2050 Pfingsten Rd Ste 128, Glenview, IL, 60026
Phone (847) 570-1700
Fax (847) 733-5293
Enumeration date Aug 20, 2008
Last updated in NPPES Oct 13, 2020
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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 Linn's NPI record?
Cross-check NPI 1750538880 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1750538880 active?
Yes, as of the latest NPPES snapshot, NPI 1750538880 is active (record last updated 2020-10-13).
Other providers at this practice address
Browse all → James Spitz Colon & Rectal Surgery Physician · Glenview, IL NPI 1992807903 Joseph Muldoon Colon & Rectal Surgery Physician · Glenview, IL NPI 1629154356 Kathryn Weber Colon & Rectal Surgery Physician · Glenview, IL NPI 1265775274 Cassandra Snitowsky Nurse Practitioner · Glenview, IL NPI 1013322031 Natalie Liu Surgery Physician · Glenview, IL NPI 1780048959 Claire Okkema Physician Assistant · Glenview, IL NPI 1023635687 Mahitha Gudivada Nurse Practitioner · Glenview, IL NPI 1194607580
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-13.