DR. BRENNAN DALE ATHERTON PHD
NPI 1215319330
Psychologist - Clinical in Williston, ND
About Dr. Brennan Dale Atherton Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRENNAN DALE ATHERTON PHD (NPI 1215319330) is an individual clinical provider in Williston, North Dakota, licensed in North Dakota (585) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
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. Brennan Dale Atherton Phd 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.
Medicare Billing Reassignments
3Medicare enrollment records show Brennan Atherton reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Williston, ND 58801
- Reassigned Medicare billing, North Dakota enrollment
Williston, ND 58801
- Reassigned Medicare billing, North Dakota enrollment
- Medicare enrollment name: Northwest Human Service Center
- 69 clinicians in this Medicare group
Grand Forks, ND 58201
- Reassigned Medicare billing, North Dakota enrollment
- 6 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 58801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILLISTON, ND 58801
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 Brennan Atherton's NPI number?
The NPI number for Brennan Atherton is 1215319330. It was assigned to this individual provider in the NPPES registry on June 25, 2015.
Where is Brennan Atherton located?
Brennan Atherton practices at 1309 11th St W Apt 208, Williston, ND 58801. The listed phone number is (801) 717-0405.
What is Brennan Atherton's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Brennan Atherton enrolled in Medicare?
Yes. Brennan Atherton 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 organizations bill Medicare for Brennan Atherton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brennan Atherton reassigns Medicare benefits to 3 organizations: Prairie River Therapy And Assessments (Williston, ND), Northwest Behavioral Health Clinic (Williston, ND) and Center For Self-Growth & Renewal, PC (Grand Forks, ND). Each 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 Brennan Atherton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brennan Atherton accept?
Health plans from Blue Cross Blue Shield of North Dakota and Sanford Health Plan list Brennan Atherton 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 Brennan Atherton was last updated on May 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. Brennan Dale Atherton, PHD · NPI 1215319330
Clinical provider in Williston, North Dakota. Individual provider, active in the CMS NPPES registry since June 25, 2015.
## Identity
- **NPI:** 1215319330 (Entity type: Individual)
- **Enumerated:** June 25, 2015
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 585 (North Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1309 11TH ST W APT 208, Williston, ND 58801-4654
- **Phone:** (801) 717-0405
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Prairie River Therapy And Assessments (NPI 1912788357, Williston, ND); Northwest Behavioral Health Clinic (NPI 1770524613, Williston, ND); Center For Self-Growth & Renewal, PC (NPI 1265658967, Grand Forks, ND) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** May 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1215319330) · Data from the CMS NPPES public registry.