Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Donald Lee Mrozek II, LPC, CADC
Counselor in Downers Grove, IL · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1962111237
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Registry record
Entity type Individual (Type 1)
Name Mr. Donald Lee Mrozek II
Credential LPC, CADC
Sex Male
Practice address 921 Curtiss St, Downers Grove, IL, 60515
Phone (630) 300-8928
Enumeration date Nov 15, 2022
Last updated in NPPES Nov 15, 2022
Taxonomy & licenses
LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy.
About the LPC 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.
Frequently asked questions
Where does Donald Mrozek practice?
The practice location on file with NPPES is in Downers Grove, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Donald Mrozek?
The National Provider Identifier (NPI) for Donald Mrozek is 1962111237, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Michael Paquette Mental Health Counselor · Downers Grove, IL NPI 1114426194 Andrew Hamilton Mental Health Counselor · Downers Grove, IL NPI 1295236651 Jessica Lowery Mental Health Counselor · Downers Grove, IL NPI 1285308148 Hallie Mcphee-Johnston Mental Health Counselor · Downers Grove, IL NPI 1134883945
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-15.