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MARILYN THORN
NPI 1720708985
Social Worker - Clinical in Arlee, MT

Active since August 29, 2022PECOS EnrolledAccepts Medicare Assignment
69300 PELLEW CREEK LN, ARLEE, MT 59821(406) 529-8622 Get Directions Write a Review

NPPES record last updated: August 29, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Marilyn Thorn NPPES

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

MARILYN THORN (NPI 1720708985) is an individual clinical provider in Arlee, Montana, licensed in Montana (BBH-SWLC-LIC55242) and active in the NPI registry since August 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1720708985
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARILYN THORN
Location Address69300 PELLEW CREEK LNArlee, MT 59821-8005
Mailing Address69300 Pellew Creek LnArlee, MT 59821-8005
Phone(406) 529-8622
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateAugust 29, 2022
NPPES CertifiedAugust 29, 2022
✔ NPI 1720708985 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 MT · BBH-SWLC-LIC55242
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.
69300 PELLEW CREEK LN, Arlee, MT 59821
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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, PacificSource Health Plans and more.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

Marilyn Thorn 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 ID5890221691
PECOS Enrollment IDI20241203003869
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 Marilyn Thorn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Frontier Psychiatry, PLLC
282 mi
Psychiatry
1601 LEWIS AVE STE 102
Billings, MT 59102
  • Reassigned Medicare billing, Montana enrollment
  • 28 clinicians in this Medicare group
NPI 1508493156 (406) 284-8814

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 59821 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 $56.81 – $172.26
Typical copayment $0.00 (range $14.20 – $43.06)
Most-billed visit code NA
Established Patient
$70.82 typical visit price
range $18.24 – $140.32
Typical copayment $17.70 (range $4.56 – $35.08)
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 Marilyn Thorn's NPI number?

The NPI number for Marilyn Thorn is 1720708985. It was assigned to this individual provider in the NPPES registry on August 29, 2022.

Where is Marilyn Thorn located?

Marilyn Thorn practices at 69300 Pellew Creek Ln, Arlee, MT 59821. The listed phone number is (406) 529-8622.

What is Marilyn Thorn's specialty?

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

Is Marilyn Thorn enrolled in Medicare?

Yes. Marilyn Thorn 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 Marilyn Thorn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Thorn reassigns Medicare benefits to Frontier Psychiatry, PLLC (Billings, 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 Marilyn Thorn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marilyn Thorn accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and UnitedHealthcare list Marilyn Thorn 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 Marilyn Thorn was last updated on August 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.