DR. AMANDA O'NEIL MACKINNON PSYD
NPI 1861633729
Psychologist in Great Falls, MT

Active since March 23, 2009PECOS EnrolledAccepts Medicare Assignment
425 SMELTER AVE NE, GREAT FALLS, MT 59404(406) 247-7130 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Amanda O'neil Mackinnon Psyd NPPES

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

DR. AMANDA O'NEIL MACKINNON PSYD (NPI 1861633729) is an individual psychologist in Great Falls, Montana, licensed in Montana (5584) and active in the NPI registry since March 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1861633729
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. AMANDA O'NEIL MACKINNONCredential: PSYD
Location Address425 SMELTER AVE NEGreat Falls, MT 59404-1927
Mailing Address511 Central Ave WGreat Falls, MT 59404-2848 · (406) 247-7130
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateMarch 23, 2009
Last NPPES UpdateOctober 2, 2025
NPPES CertifiedOctober 2, 2025
✔ NPI 1861633729 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in MT · 5584
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 22582 (CA)
425 SMELTER AVE NE, Great Falls, MT 59404

Accepted 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

Dr. Amanda O'neil Mackinnon Psyd 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 ID1153460670
PECOS Enrollment IDI20251107002849, I20260130000775
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 Amanda Mackinnon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Clinic/Center
425 SMELTER AVE NE
Great Falls, MT 59404
  • Reassigned Medicare billing, Texas enrollment
  • 11 clinicians in this Medicare group

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

Other Providers at the Same Location NPPES 18

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

Registered Nurse (Community Health)
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Dentist (General Practice)
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Registered Nurse
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Nurse's Aide
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Nurse Practitioner (Pediatrics)
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Clinic/Center
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Nurse Practitioner (Family)
425 SMELTER AVE NE
GREAT FALLS, MT 59404
Optometrist
425 SMELTER AVE NE
GREAT FALLS, MT 59404

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 Amanda Mackinnon's NPI number?

The NPI number for Amanda Mackinnon is 1861633729. It was assigned to this individual provider in the NPPES registry on March 23, 2009.

Where is Amanda Mackinnon located?

Amanda Mackinnon practices at 425 Smelter Ave NE, Great Falls, MT 59404. The listed phone number is (406) 247-7130.

What is Amanda Mackinnon's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Amanda Mackinnon enrolled in Medicare?

Yes. Amanda Mackinnon 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 Amanda Mackinnon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Amanda Mackinnon reassigns Medicare benefits to Little Shell Tribe Of Chippewa Indians Of Montana (Great Falls, 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 Amanda Mackinnon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Amanda Mackinnon accept?

Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Amanda Mackinnon 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 Amanda Mackinnon was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.