DR. TIMOTHY J O'BRIEN PSYD
NPI 1801449681
Psychologist - Clinical in Chicago, IL

Q: What is Timothy O'brien's NPI number?

The NPI number for Timothy O'brien is 1801449681. It was assigned to this individual provider in the NPPES registry on July 19, 2019.

Q: What is Timothy O'brien's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Timothy O'brien was last updated on January 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.

Active since July 19, 2019PECOS Enrolled

2265 W 113TH PL, CHICAGO, IL 60643(773) 683-3500 Get Directions Write a Review

NPPES record last updated: January 8, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 8, 2025, Jun 17, 2024, Jul 19, 2019 (3 updates tracked since 2019).

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About Dr. Timothy J O'brien Psyd NPPES

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

DR. TIMOTHY J O'BRIEN PSYD (NPI 1801449681) is an individual clinical provider in Chicago, Illinois, licensed in Illinois (071.010066) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801449681

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. TIMOTHY J O'BRIENCredential: PSYD

Location Address2265 W 113TH PLChicago, IL 60643-4104

Mailing Address2265 W 113th PlChicago, IL 60643-4104 · (773) 683-3500

Phone(773) 683-3500

Sole ProprietorYes

Enumeration DateJuly 19, 2019

Last NPPES UpdateJanuary 8, 20253 updates tracked since enumeration

NPPES CertifiedJanuary 8, 2025

✔ NPI 1801449681 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in IL · 071.010066

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

2265 W 113TH PL, Chicago, IL 60643

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Timothy J O'brien Psyd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Timothy O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hinds & O'brien Counseling

Same address

Clinical

2265 W 113TH PL
Chicago, IL 60643

Reassigned Medicare billing, Illinois enrollment

NPI 1841067741 (504) 460-8965

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60643 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$183.39 typical visit price

range $60.08 – $183.39

Typical copayment $45.84 (range $15.02 – $45.84)

Most-billed visit code 99205

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

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

HINDS & O'BRIEN COUNSELING

Psychologist (Clinical)

2265 W 113TH PL
CHICAGO, IL 60643

Cook County (504) 460-8965

MS. TARA MICHELLE HINDS LCPC

Counselor (Professional)

2265 W 113TH PL
CHICAGO, IL 60643

Cook County (773) 683-3500

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 Timothy O'brien's NPI number?

The NPI number for Timothy O'brien is 1801449681. It was assigned to this individual provider in the NPPES registry on July 19, 2019.

Where is Timothy O'brien located?

Timothy O'brien practices at 2265 W 113th Pl, Chicago, IL 60643. The listed phone number is (773) 683-3500.

What is Timothy O'brien's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Timothy O'brien enrolled in Medicare?

Yes. Timothy O'brien is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Timothy O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy O'brien reassigns Medicare benefits to Hinds & O'brien Counseling (Chicago, 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 Timothy O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Timothy O'brien accept?

Health plans from Oscar Health list Timothy O'brien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Timothy O'brien was last updated on January 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.