Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. John Liddell, PHYSICAL THERAPIST
Physical Therapist in Mequon, WI · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972969988
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Registry record
Entity type Individual (Type 1)
Name Mr. John Liddell
Credential PHYSICAL THERAPIST
Sex Male
Practice address 1516 W Mequon Rd, Ste 201, Mequon, WI, 53092
Phone (262) 241-8402
Fax (262) 241-8403
Enumeration date Jan 6, 2016
Last updated in NPPES May 8, 2016
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 11987 (AZ) Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 10133 (MN) Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 13065 (WI) 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 Liddell's NPI record?
Cross-check NPI 1972969988 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1972969988 active?
Yes, as of the latest NPPES snapshot, NPI 1972969988 is active (record last updated 2016-05-08).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-08.