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KAREN O'BRIEN L.C.S.W.
NPI 1700243490
Social Worker - Clinical in Derby, CT

Active since January 26, 2016PECOS Enrolled
11 HICKORY RD, DERBY, CT 06418(203) 581-2685 Get Directions Write a Review

NPPES record last updated: January 4, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 4, 2023, Jan 26, 2016 (2 updates tracked since 2016).

About Karen O'brien L.c.s.w. NPPES

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

KAREN O'BRIEN L.C.S.W. (NPI 1700243490) is an individual clinical provider in Derby, Connecticut, licensed in Connecticut (012155) and active in the NPI registry since January 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1700243490
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameKAREN O'BRIENCredential: L.C.S.W.
Location Address11 HICKORY RDDerby, CT 06418-2210
Mailing Address11 Hickory RdDerby, CT 06418-2210 · (203) 581-2685
Phone(203) 581-2685
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateJanuary 26, 2016
Last NPPES UpdateJanuary 4, 20232 updates tracked since enumeration
NPPES CertifiedJanuary 4, 2023
✔ NPI 1700243490 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CT · 012155
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.
Also ListedSocial WorkerTaxonomy 104100000X · License MSW.003114 (CT)
11 HICKORY RD, Derby, CT 06418
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karen O'brien L.c.s.w. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3971079369
PECOS Enrollment IDI20260414001119
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 Karen O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

State Of Connecticut
6.7 mi
Psychiatric Hospital
34 PARK STREET
New Haven, CT 06790
  • Reassigned Medicare billing, Connecticut enrollment
  • 127 clinicians in this Medicare group
NPI 1881629434 (203) 974-7417

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 06418 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 $60.82 – $183.10
Typical copayment $0.00 (range $15.20 – $45.77)
Most-billed visit code NA
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
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 Karen O'brien's NPI number?

The NPI number for Karen O'brien is 1700243490. It was assigned to this individual provider in the NPPES registry on January 26, 2016.

Where is Karen O'brien located?

Karen O'brien practices at 11 Hickory Rd, Derby, CT 06418. The listed phone number is (203) 581-2685.

What is Karen O'brien's specialty?

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

Is Karen O'brien enrolled in Medicare?

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

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

According to the CMS Revalidation Reassignment List (October 2026 release), Karen O'brien reassigns Medicare benefits to State Of Connecticut (New Haven, CT). 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 Karen O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen O'brien accept?

Health plans from Anthem Blue Cross and Blue Shield list Karen 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 Karen O'brien was last updated on January 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.