Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CATHERINE O'SULLIVAN MSW, LCSW
NPI 1184160285
Social Worker - Clinical in Saint Louis, MO

Q: What is Catherine O'sullivan's NPI number?

The NPI number for Catherine O'sullivan is 1184160285. It was assigned to this individual provider in the NPPES registry on January 12, 2017.

Q: What is Catherine O'sullivan's specialty?

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

Active since January 12, 2017PECOS Enrolled

1001 LYNCH ST, SAINT LOUIS, MO 63118(314) 535-5600 Get Directions Write a Review

NPPES record last updated: July 29, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 29, 2026, Apr 20, 2026, Jan 12, 2017 (3 updates tracked since 2017).

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About Catherine O'sullivan Msw, Lcsw NPPES

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

CATHERINE O'SULLIVAN MSW, LCSW (NPI 1184160285) is an individual clinical provider in Saint Louis, Missouri, licensed in Missouri (2014043839) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1184160285

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameCATHERINE O'SULLIVANCredential: MSW, LCSW

Location Address1001 LYNCH STSaint Louis, MO 63118-1818

Mailing AddressPo Box 844715Kansas City, MO 64184-4715 · (417) 761-5000 · Fax (417) 761-5631

Phone(314) 535-5600

Sole ProprietorNo

Medical School CMSOtherGraduated 2008

Enumeration DateJanuary 12, 2017

Last NPPES UpdateJuly 29, 20263 updates tracked since enumeration

NPPES CertifiedJuly 29, 2026

✔ NPI 1184160285 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 MO · 2014043839

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.

1001 LYNCH ST, Saint Louis, MO 63118

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Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Catherine O'sullivan Msw, Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8224509468

PECOS Enrollment IDI20260609000180

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63118 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 $55.65 – $169.38

Typical copayment $0.00 (range $13.91 – $42.34)

Most-billed visit code NA

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

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.

Other Providers at the Same Location NPPES 20

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

FAMILY CARE HEALTH CENTERS

Clinic/Center (Federally Qualified Health Center (FQHC))