NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Lester Mcnab

Adult Mental Health Clinic/Center in Lawrence, MA · enumerated 2016.

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

National Provider Identifier

1619429198

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Lester Mcnab
Sex Male
Practice address Lawrence, MA, 01843
Phone (617) 272-0126
Enumeration date Oct 31, 2016
Last updated in NPPES Oct 31, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Lester Mcnab?
The National Provider Identifier (NPI) for Lester Mcnab is 1619429198, a Type 1 (individual) record in the CMS NPPES registry.
Where does Lester Mcnab practice?
The practice location on file with NPPES is in Lawrence, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-31.