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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

OLIVIA GROSSKLAUS MS, LMFT
NPI 1639073794
Marriage & Family Therapist in Chicago, IL

Active since October 05, 2026
1165 N CLARK ST STE 411, CHICAGO, IL 60610(480) 684-0935 Get Directions Write a Review

NPPES record added: October 5, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

About Olivia Grossklaus Ms, Lmft NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OLIVIA GROSSKLAUS MS, LMFT (NPI 1639073794) is an individual marriage & family therapist in Chicago, Illinois, licensed in Illinois (166.012311) and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1639073794
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameOLIVIA GROSSKLAUSCredential: MS, LMFT
Location Address1165 N CLARK ST STE 411Chicago, IL 60610-7473
Mailing Address1165 N Clark St Ste 411Chicago, IL 60610-7473 · (480) 684-0935
Phone(480) 684-0935
Sole ProprietorYes
Enumeration DateOctober 5, 2026
NPPES CertifiedOctober 4, 2026
✔ NPI 1639073794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in IL · 166.012311
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
1165 N CLARK ST STE 411, Chicago, IL 60610
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Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MEGAN MARIE ALLCOCK LMFT
Marriage & Family Therapist
1165 N CLARK ST STE 411
CHICAGO, IL 60610
Cook County (619) 933-6563
MICHAELA MARGARET CHOY LMFT
Marriage & Family Therapist
1165 N CLARK ST STE 411
CHICAGO, IL 60610
Cook County (312) 818-3295
ANNE KIRSTI DECORE LMFT
Marriage & Family Therapist
1165 N CLARK ST STE 411
CHICAGO, IL 60610
Cook County (312) 725-4260
RACHEL DYANN MILLER LMFT
Marriage & Family Therapist
1165 N CLARK ST STE 411
CHICAGO, IL 60610
Cook County (312) 626-4945
JESSIKA HUANG WESTON
Marriage & Family Therapist
1165 N CLARK ST STE 411
CHICAGO, IL 60610
Cook County (312) 588-6520

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Olivia Grossklaus's NPI number?

The NPI number for Olivia Grossklaus is 1639073794. It was assigned to this individual provider in the NPPES registry on October 5, 2026.

Where is Olivia Grossklaus located?

Olivia Grossklaus practices at 1165 N Clark St Ste 411, Chicago, IL 60610. The listed phone number is (480) 684-0935.

What is Olivia Grossklaus's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

When was this NPI record last updated?

The NPPES record for Olivia Grossklaus was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.