NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Abigail O'Hollaren, OTRL

Occupational Therapist in Dearborn, MI · enumerated 2018 · practices at Michigan Surgery Specialists, P.C..

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

National Provider Identifier

1558841270

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Abigail O'Hollaren
Credential OTRL
Sex Female
Practice address 22731 Newman St Ste 100b, Dearborn, MI, 48124
Enumeration date Aug 21, 2018
Last updated in NPPES May 1, 2023

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service Providers Secondary
225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

Other identifiers

Identifier Type State Issuer
381958736 Medicaid MI -
236575 Other MI MEDICARE

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 Abigail O'Hollaren?
The National Provider Identifier (NPI) for Abigail O'Hollaren is 1558841270, a Type 1 (individual) record in the CMS NPPES registry.
Where does Abigail O'Hollaren practice?
The practice location on file with NPPES is in Dearborn, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-01.