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HOLLY O'BRIEN LCSW
NPI 1598575680
Social Worker - Clinical in Clay City, IL

Active since January 10, 2025PECOS EnrolledAccepts Medicare Assignment
939 SUNSET RD SW, CLAY CITY, IL 62824(618) 662-2131 Get Directions Write a Review

NPPES record last updated: January 10, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Holly O'brien Lcsw NPPES

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

HOLLY O'BRIEN LCSW (NPI 1598575680) is an individual clinical provider in Clay City, Illinois, licensed in Illinois (149.012860) and active in the NPI registry since January 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1598575680
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameHOLLY O'BRIENCredential: LCSW
Location Address939 SUNSET RD SWClay City, IL 62824-1113
Mailing Address1920 E Heart Grove LnDundas, IL 62425-2214 · (618) 843-5932
Phone(618) 662-2131
Sole ProprietorYes
Medical School CMSOtherGraduated 2006
Enumeration DateJanuary 10, 2025
NPPES CertifiedJanuary 10, 2025
✔ NPI 1598575680 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in IL · 149.012860
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
939 SUNSET RD SW, Clay City, IL 62824
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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 and accepts Medicare assignment

Holly O'brien 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 ID1658896030
PECOS Enrollment IDI20250417002467
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 Holly O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Clay
6.1 mi
Rural Health
929 STACEY BURK DR
Flora, IL 62839
  • Reassigned Medicare billing, Illinois enrollment
  • 22 clinicians in this Medicare group
NPI 1811946411 (618) 662-2191

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 62824 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
$0.00 typical visit price
range $54.80 – $168.44
Typical copayment $0.00 (range $13.70 – $42.11)
Most-billed visit code NA
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Holly O'brien's NPI number?

The NPI number for Holly O'brien is 1598575680. It was assigned to this individual provider in the NPPES registry on January 10, 2025.

Where is Holly O'brien located?

Holly O'brien practices at 939 Sunset Rd SW, Clay City, IL 62824. The listed phone number is (618) 662-2131.

What is Holly O'brien's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Holly O'brien enrolled in Medicare?

Yes. Holly O'brien 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 Holly O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Holly O'brien reassigns Medicare benefits to County Of Clay (Flora, 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 Holly O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Holly O'brien accept?

Health plans from Oscar Health list Holly 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 Holly O'brien was last updated on January 10, 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.