NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Rebecca Mclellan, MD

Pediatrics Physician in Milwaukee, WI · enumerated 2018.

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

National Provider Identifier

1851896765

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Allison Rebecca Mclellan
Credential MD
Sex Female
Practice address 8701 W Watertown Plank Rd, Milwaukee, WI, 53226
Enumeration date Mar 25, 2018
Last updated in NPPES Nov 21, 2019

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 72133-20 (WI) 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

Where does Allison Mclellan practice?
The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Allison Mclellan?
The National Provider Identifier (NPI) for Allison Mclellan is 1851896765, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-21.