CHI ST ALEXIUS HEALTH WILLISTON
NPI 1245397736
Anesthesiology in Williston, ND

Q: What is Mercy Medical Center's NPI number?

The NPI number for Mercy Medical Center is 1245397736. It was assigned to this organization in the NPPES registry on January 3, 2007. The provider is doing business as Chi St Alexius Health Williston.

Q: What is Mercy Medical Center's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Active since January 03, 2007

1301 15TH AVE W, WILLISTON, ND 58801(701) 774-7400(701) 774-7479 Get Directions Write a Review

NPPES record last updated: November 17, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Chi St Alexius Health Williston NPPES

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

CHI ST ALEXIUS HEALTH WILLISTON (NPI 1245397736) is a healthcare organization registered as an anesthesiology in Williston, North Dakota and active in the NPI registry since January 2007. The organization lists Joseph Ruark, Vp-operational Finance, as its authorized official.

NPPES Registry Identity

NPI1245397736

Entity TypeOrganization

Primary Taxonomy207L00000X

Legal Business NameMERCY MEDICAL CENTER

Location Address1301 15TH AVE WWilliston, ND 58801-3821

Mailing Address1301 15th Ave WWilliston, ND 58801-3821 · (701) 774-7400 · Fax (701) 774-7479

Phone(701) 774-7400

Fax(701) 774-7479

Organization SubpartNo

Authorized OfficialJoseph RuarkVp-operational Finance · (701) 774-7400

Enumeration DateJanuary 3, 2007

Last NPPES UpdateNovember 17, 2016

✔ NPI 1245397736 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

1301 15TH AVE W, Williston, ND 58801

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Other Names 1

Doing Business AsChi St Alexius Health Williston

Other Identifiers 4

Medicare PINN71082ND

Other02061001ND · Blue Cross Of North Dakot

Medicaid11444ND

Medicare ID-Type Unspecified71082Medicare

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota.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)

Chi St Alexius Health Williston is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

268

Medicare enrollment records show 268 clinicians reassign Medicare billing to Chi St Alexius Health Williston, which bills Medicare for the services they deliver. Of these, 28 practice at this address and 39 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 20

Diagnostic Radiology94

Emergency Medicine46

Nurse Practitioner34

Certified Registered Nurse Anesthetist (CRNA)22

Family Practice13

Pediatric Medicine10

Hospitalist9

Internal Medicine9

12 other specialties31

Nearest to this location (20)

See all 268

Nana Oforiwaa Boateng-Holland, FNP-C

Nurse Practitioner

NPI 1093219685

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOSSame address

Stacie Bondy, NP-C

Nurse Practitioner

NPI 1982089272

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

John Clair, DO

Hospitalist

NPI 1427232354

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Pirthvi Giyanwani, MD

Pediatric Medicine

NPI 1578058251

1301 15TH AVE W
Williston, ND 58801

(701) 774-7470

✔ PECOSSame address

Shanda Harstad, APRN

Nurse Practitioner

NPI 1376276766

1301 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOS✔ Accepts MedicareSame address

Fareed Kadum, MD

Obstetrics/Gynecology

NPI 1760495840

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Alissa Larsen, FNP

Nurse Practitioner

NPI 1528751872

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Holden Mccall

Certified Registered Nurse Anesthetist (CRNA)

NPI 1891362901

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ Accepts MedicareSame address

Lynn Nyquist, MD

Family Practice

NPI 1457315970

1301 15TH AVE W
Williston, ND 58801

(701) 774-7470

✔ PECOSSame address

Bruce Pugatch, MD

Internal Medicine

NPI 1700862232

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Madhu Reddy, MD

Diagnostic Radiology

NPI 1639389133

1301 15TH AVE. W.
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Lina Ricketts, DNP, CRNA

Certified Registered Nurse Anesthetist (CRNA)

NPI 1508527755

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ Accepts MedicareSame address

Jane Grorud, MD

Pediatric Medicine

NPI 1386664696

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOSSame address

Robert Kemp, M.D.

Family Practice

NPI 1114951431

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOS✔ Accepts MedicareSame address

William Small, MD

Family Practice

NPI 1992793673

1213 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Wayne Anderson, MD

General Surgery

NPI 1053417840

1213 15TH AVE W SUITE 200
Williston, ND 58801

(701) 572-4003

✔ PECOS✔ Accepts MedicareSame address

Christine Hoglund, DO

Pain Management

NPI 1184600926

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOSSame address

Roxanne Keene, MD

Orthopedic Surgery

NPI 1184661118

1213 15TH AVE. W
Williston, ND 58801

(701) 572-7651

✔ PECOSSame address

Austin Mccoy, M.D.

Internal Medicine

NPI 1508092933

1213 15TH AVE. W. CRAVEN HAGAN CLINIC
Williston, ND 58801

(701) 572-7651

✔ PECOS✔ Accepts MedicareSame address

Ines Teuma Nguimfack, MD

Family Practice

NPI 1154776268

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOSSame address

See all 268 clinicians

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 Mercy Medical Center's NPI number?

The NPI number for Mercy Medical Center is 1245397736. It was assigned to this organization in the NPPES registry on January 3, 2007. 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) 774-7400.

What is Mercy Medical Center's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

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, 28 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 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 November 17, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.