NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Abigail M.G. Keizer, BCBA, LBA

Behavior Analyst in Grand Rapids, MI · enumerated 2019.

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

National Provider Identifier

1720631591

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Abigail M.G. Keizer
Credential BCBA, LBA
Sex Female
Practice address 1000 E Paris Ave Se Ste 160, Grand Rapids, MI, 49546
Phone (302) 334-8251
Enumeration date Jul 22, 2019
Last updated in NPPES Feb 17, 2025

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service Providers Secondary
103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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

Where does Abigail Keizer practice?
The practice location on file with NPPES is in Grand Rapids, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Abigail Keizer?
The National Provider Identifier (NPI) for Abigail Keizer is 1720631591, 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 2025-02-17.