Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John T Leyland II, MD
Urology Physician in Wilmette, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275678740
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Registry record
Entity type Individual (Type 1)
Name Dr. John T Leyland II
Credential MD
Sex Male
Practice address 3201 Old Glenview Rd Ste 130, Wilmette, IL, 60091
Phone (847) 673-6505
Fax (847) 673-2099
Enumeration date Feb 21, 2007
Last updated in NPPES Jul 30, 2025
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
What specialty is John Leyland?
John Leyland is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-30.