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MRS. OLIVIA CATHERINE O'HARE MSW, LCSW
NPI 1710211172
Counselor - Mental Health in Downers Grove, IL

Active since October 01, 2009PECOS EnrolledAccepts Medicare Assignment
5151 MOCHEL DR STE 307, DOWNERS GROVE, IL 60515(630) 963-5390(630) 852-2841 Get Directions Write a Review

NPPES record last updated: January 3, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mrs. Olivia Catherine O'hare Msw, Lcsw NPPES

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

MRS. OLIVIA CATHERINE O'HARE MSW, LCSW (NPI 1710211172) is an individual mental health provider in Downers Grove, Illinois and active in the NPI registry since October 2009. She is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2010).

NPPES Registry Identity

NPI1710211172
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMRS. OLIVIA CATHERINE O'HARECredential: MSW, LCSW
Location Address5151 MOCHEL DR STE 307Downers Grove, IL 60515-5078
Mailing Address1911 Downing AveWestchester, IL 60154-4208 · (312) 714-3452
Phone(630) 963-5390
Fax(630) 852-2841
Sole ProprietorYes
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2010
Enumeration DateOctober 1, 2009
Last NPPES UpdateJanuary 3, 2017
✔ NPI 1710211172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
5151 MOCHEL DR STE 307, Downers Grove, IL 60515
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mrs. Olivia Catherine O'hare Msw, Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385926138
PECOS Enrollment IDI20170131001585
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Olivia O'hare reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Irving And Associates In Behavioral Health PC
0.1 mi
Counseling
5201 WASHINGTON ST STE 2
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 2 clinicians in this Medicare group
NPI 1861772428 (630) 241-5689

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 1 hour 90837
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.
355 services20 patients

Other Providers at the Same Location NPPES 3

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

BRENNA LEADINGHAM L.S.W
Social Worker
5151 MOCHEL DR STE 307
DOWNERS GROVE, IL 60515
Dupage County (630) 963-5390
STEPHANIE OLAFSON
Social Worker (Clinical)
5151 MOCHEL DR STE 307
DOWNERS GROVE, IL 60515
Dupage County (630) 963-5390
CAROLYN BOYER LCPC
Counselor (Professional)
5151 MOCHEL DR STE 307
DOWNERS GROVE, IL 60515
Dupage County (630) 963-5390

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 O'hare's NPI number?

The NPI number for Olivia O'hare is 1710211172. It was assigned to this individual provider in the NPPES registry on October 1, 2009.

Where is Olivia O'hare located?

Olivia O'hare practices at 5151 Mochel Dr Ste 307, Downers Grove, IL 60515. The listed phone number is (630) 963-5390.

What is Olivia O'hare's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Olivia O'hare enrolled in Medicare?

Yes. Olivia O'hare is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Olivia O'hare's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olivia O'hare reassigns Medicare benefits to Irving And Associates In Behavioral Health PC (Downers Grove, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Olivia O'hare's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Olivia O'hare was last updated on January 3, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years 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.