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MS. KATHERINE ANN ONEILL LCPC
NPI 1841443652
Counselor - Mental Health in Whitehall, MT

Active since October 24, 2008PECOS Enrolled
105 N WHITEHALL ST, ALTACARE, WHITEHALL, MT 59759(406) 287-3882(406) 497-7918 Get Directions Write a Review

NPPES record last updated: September 19, 2014. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Ms. Katherine Ann Oneill Lcpc NPPES

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

MS. KATHERINE ANN ONEILL LCPC (NPI 1841443652) is an individual mental health provider in Whitehall, Montana, licensed in Montana (1576) and active in the NPI registry since October 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841443652
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMS. KATHERINE ANN ONEILLCredential: LCPC
Location Address105 N WHITEHALL ST, ALTACAREWhitehall, MT 59759-7713
Mailing Address3738 Harrison Ave, AltacareButte, MT 59701-6823 · (406) 287-3882 · Fax (406) 497-7918
Phone(406) 287-3882
Fax(406) 497-7918
Sole ProprietorNo
Enumeration DateOctober 24, 2008
Last NPPES UpdateSeptember 19, 2014
✔ NPI 1841443652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in MT · 1576
105 N WHITEHALL ST, Whitehall, MT 59759
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Katherine Ann Oneill Lcpc 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 Katherine Oneill reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Little Sunflower Counseling, LLC
113 mi
Mental Health
700 SW HIGGINS AVE STE 107
Missoula, MT 59803
  • Reassigned Medicare billing, Montana enrollment
  • 11 clinicians in this Medicare group
NPI 1114516135 (406) 214-3810

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

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 Katherine Oneill's NPI number?

The NPI number for Katherine Oneill is 1841443652. It was assigned to this individual provider in the NPPES registry on October 24, 2008.

Where is Katherine Oneill located?

Katherine Oneill practices at 105 N Whitehall St Altacare, Whitehall, MT 59759. The listed phone number is (406) 287-3882.

What is Katherine Oneill's specialty?

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

Is Katherine Oneill enrolled in Medicare?

Yes. Katherine Oneill is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Katherine Oneill's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Oneill reassigns Medicare benefits to Little Sunflower Counseling, LLC (Missoula, MT). 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 Katherine Oneill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Katherine Oneill accept?

Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Katherine Oneill 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 Katherine Oneill was last updated on September 19, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.