Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Markowitz

Behavior Analyst in Northbrook, IL · enumerated 2018.

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

National Provider Identifier

1235633256

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Allison Markowitz

Sex Female

Practice address 3100 Dundee Rd Ste 704, Northbrook, IL, 60062

Phone (847) 498-5437

Enumeration date Mar 23, 2018

Last updated in NPPES Mar 23, 2018

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-17-26953 (IL) 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

How do I verify Allison Markowitz's NPI record?

Cross-check NPI 1235633256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1235633256 active?

Yes, as of the latest NPPES snapshot, NPI 1235633256 is active (record last updated 2018-03-23).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-23.