MERCY MEDICAL CENTER
NPI 1902824576
General Acute Care Hospital - Critical Access in Williston, ND
About Mercy Medical Center NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MERCY MEDICAL CENTER (NPI 1902824576), doing business as Chi St Alexius Health Williston, is a healthcare organization registered as a critical access in Williston, North Dakota and active in the NPI registry since July 2006. The organization lists Amber Gail Stowman, Vp Operational Finance, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mercy Medical Center is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
268Medicare enrollment records show 268 clinicians reassign Medicare billing to Mercy Medical Center, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 39 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 20
Nearest to this location (20)
See all 268Source: 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 Mercy Medical Center's NPI number?
The NPI number for Mercy Medical Center is 1902824576. It was assigned to this organization in the NPPES registry on July 18, 2006. The provider is doing business as Chi St Alexius Health Williston.
Where is Mercy Medical Center located?
Mercy Medical Center is located at 1301 15th Ave W, Williston, ND 58801. The listed phone number is (701) 774-7401.
What is Mercy Medical Center's specialty?
The primary specialty registered for this NPI is General Acute Care Hospital, specializing in Critical Access, with taxonomy code 282NC0060X.
Is Mercy Medical Center enrolled in Medicare?
Yes. Mercy Medical Center is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mercy Medical Center?
According to the CMS Revalidation Reassignment List (October 2026 release), 268 clinicians in 20 Medicare specialties reassign their Medicare billing to Mercy Medical Center. A 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 the clinician's services. The largest specialties are Diagnostic Radiology (94), Emergency Medicine (46) and Nurse Practitioner (34). Of these, 5 practice at this address and 39 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Mercy Medical Center accept?
Health plans from Blue Cross Blue Shield of North Dakota and Sanford Health Plan list Mercy Medical Center 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 Mercy Medical Center was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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.
# Mercy Medical Center · NPI 1902824576
Critical Access organization in Williston, North Dakota. Organization record, active in the CMS NPPES registry since July 18, 2006.
## Identity
- **NPI:** 1902824576 (Entity type: Organization)
- **Enumerated:** July 18, 2006
- **Primary specialty:** General Acute Care Hospital - Critical Access · taxonomy 282NC0060X
- **Also known as:** Chi St Alexius Health Williston (Doing Business As)
- **Organization subpart:** Yes (part of Catholic Health Initiatives)
- **Authorized official:** Amber Stowman, VP OPERATIONAL FINANCE
## Practice location
- **Address:** 1301 15TH AVE W, Williston, ND 58801-3821
- **Phone:** (701) 774-7401 · **Fax:** (701) 774-7479
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 268 clinicians in 20 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Diagnostic Radiology (94), Emergency Medicine (46), Nurse Practitioner (34); 5 practice at this address and 39 within 10 miles; [full list](https://npiprofile.com/npi/1902824576/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 21, 2026
- **Other identifiers:** Medicaid 01059 (ND); Other 000224 (ND); Medicaid 417924 (MT); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1902824576) · Data from the CMS NPPES public registry.