Mark M Zebrowski, PH.D.

Mark M Zebrowski is a School Psychologist provider (Psychologist) practicing in Bourbonnais, IL, registered in the NPPES registry with NPI 1437207131 since 2007. The credential PHD stands for Doctor of Philosophy.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1437207131
Entity type	Individual (Type 1)
Name	Mark M Zebrowski
Credential	PH.D.
Sex	Male
Practice address	Bourbonnais, IL, 60914
Phone	8159394232
Fax	8159394978
Enumeration date	2007-01-08
Last updated in NPPES	2025-09-11

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103TC0700X	Clinical Psychologist	Secondary	—	IL
103TC2200X	Clinical Child & Adolescent Psychologist	Secondary	—	IL
103T00000X	Psychologist	Secondary	—	IL
103TP2701X	Group Psychotherapy Psychologist	Secondary	—	IL
103TS0200X	School Psychologist	Primary	—	IL

PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Copy-ready billing details

Provider: Mark Zebrowski, PH.D.
NPI: 1437207131
Taxonomy: 103TS0200X (School Psychologist)
Address: Bourbonnais, IL, 60914

Verify this record

Cross-check NPI 1437207131 against the authoritative CMS record: view Mark M Zebrowski on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Zebrowski?

Mark Zebrowski is registered in NPPES with the primary taxonomy of School Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-09-11.