Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Johnston, MD

Urology Physician in Livonia, MI · enumerated 2006.

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

National Provider Identifier

1992711030

Verified

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Registry record

Entity type Individual (Type 1)

Name William Johnston

Credential MD

Sex Male

Practice address 33014 5 Mile Rd, Livonia, MI, 48154

Phone (734) 261-7401

Fax (734) 261-7410

Enumeration date Jul 31, 2006

Last updated in NPPES Oct 3, 2019

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 036111816 (IL) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 4301081273 (MI) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for William Johnston?

The National Provider Identifier (NPI) for William Johnston is 1992711030, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Johnston practice?

The practice location on file with NPPES is in Livonia, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Jeffrey Schock Urology Physician · Livonia, MI NPI 1710941273 Gregory Mcintosh Urology Physician · Livonia, MI NPI 1184688665 Michael Hoff Urology Physician · Livonia, MI NPI 1629032693 Community Opportunity Center Chore Provider · Livonia, MI NPI 1922181312 Oktavijan Mikleus Adult Health Nurse Practitioner · Livonia, MI NPI 1831239102 Michigan Institute of Urology, PC Durable Medical Equipment & Medical Supplies · Livonia, MI NPI 1154193043

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-03.