MERCY MEDICAL CENTER
NPI 1225144132
Physician Assistant in Williston, ND

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

The NPI number for Mercy Medical Center is 1225144132. It was assigned to this organization in the NPPES registry on August 22, 2006.

Q: What is Mercy Medical Center's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Active since August 22, 2006

1301 15TH AVE W, WILLISTON, ND 58801(701) 774-7470(701) 774-7479 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

On this page

About Mercy Medical Center NPPES

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

MERCY MEDICAL CENTER (NPI 1225144132) is a healthcare organization registered as a physician assistant in Williston, North Dakota and active in the NPI registry since August 2006. The organization lists Kerry S. Monson, Vp Finance/cfo, as its authorized official.

NPPES Registry Identity

NPI1225144132

Entity TypeOrganization

Primary Taxonomy363A00000X

Legal Business NameMERCY MEDICAL CENTER

Location Address1301 15TH AVE WWilliston, ND 58801-3821

Mailing Address1301 15th Ave WWilliston, ND 58801-3821 · (701) 774-7470 · Fax (701) 774-7479

Phone(701) 774-7470

Fax(701) 774-7479

Organization SubpartNo

Authorized OfficialKerry S. MonsonVp Finance/cfo · (701) 774-7470

Enumeration DateAugust 22, 2006

Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration

✔ NPI 1225144132 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in ND · 5052A

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Also ListedRegistered Nurse · OncologyTaxonomy 163WX0200X · License 5052A (ND)

Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 5052A (ND)

1301 15TH AVE W, Williston, ND 58801

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Other Identifiers 2

Other00711006ND · Blue Cross Of Nd

Medicaid013744ND

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 MULTIPLE SINGLE SPECIALTY GROUP

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

268

Medicare 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

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

Erika Frey

Nurse Practitioner

NPI 1225929680

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Ashley Hagel, MD

General Surgery

NPI 1154647816

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Erin Langseth, DNP

Nurse Practitioner

NPI 1518659705

1301 15TH AVE W
Williston, ND 58801

(701) 774-7485

✔ PECOS✔ Accepts MedicareSame address

Heidi Oien, FNP-C

Nurse Practitioner

NPI 1669362604

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts MedicareSame address

Ashwini Vijayakumar, MD

General Surgery

NPI 1487140042

1301 15TH AVE W
Williston, ND 58801

(701) 774-7401

✔ PECOSSame address

Queen Elizabeth Fugah, DNP

Nurse Practitioner

NPI 1619850831

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOS✔ Accepts Medicare0.1 mi

Nana Oforiwaa Boateng-Holland, FNP-C

Nurse Practitioner

NPI 1093219685

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS0.1 mi

John Clair, DO

Hospitalist

NPI 1427232354

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts Medicare0.1 mi

Pirthvi Giyanwani, MD

Pediatric Medicine

NPI 1578058251

1301 15TH AVE W
Williston, ND 58801

(701) 774-7470

✔ PECOS0.1 mi

Fareed Kadum, MD

Obstetrics/Gynecology

NPI 1760495840

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts Medicare0.1 mi

Holden Mccall

Certified Registered Nurse Anesthetist (CRNA)

NPI 1891362901

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ Accepts Medicare0.1 mi

Lynn Nyquist, MD

Family Practice

NPI 1457315970

1301 15TH AVE W
Williston, ND 58801

(701) 774-7470

✔ PECOS0.1 mi

Bruce Pugatch, MD

Internal Medicine

NPI 1700862232

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts Medicare0.1 mi

Madhu Reddy, MD

Diagnostic Radiology

NPI 1639389133

1301 15TH AVE. W.
Williston, ND 58801

(701) 774-7400

✔ PECOS✔ Accepts Medicare0.1 mi

Lina Ricketts, DNP, CRNA

Certified Registered Nurse Anesthetist (CRNA)

NPI 1508527755

1301 15TH AVE W
Williston, ND 58801

(701) 774-7400

✔ Accepts Medicare0.1 mi

Jane Grorud, MD

Pediatric Medicine

NPI 1386664696

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOS0.1 mi

Wayne Anderson, MD

General Surgery

NPI 1053417840

1213 15TH AVE W SUITE 200
Williston, ND 58801

(701) 572-4003

✔ PECOS✔ Accepts Medicare0.1 mi

Christine Hoglund, DO

Pain Management

NPI 1184600926

1213 15TH AVE W
Williston, ND 58801

(701) 572-7651

✔ PECOS0.1 mi

Roxanne Keene, MD

Orthopedic Surgery

NPI 1184661118

1213 15TH AVE. W
Williston, ND 58801

(701) 572-7651

✔ PECOS0.1 mi

Tessa Marburger, M.D.

Neurology

NPI 1942476825

1500 14TH ST W STE 300
Williston, ND 58801

(701) 774-7500

✔ PECOS✔ Accepts Medicare0.1 mi

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 1225144132. It was assigned to this organization in the NPPES registry on August 22, 2006.

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) 774-7470.

What is Mercy Medical Center's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

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.

When was this NPI record last updated?

The NPPES record for Mercy Medical Center was last updated on September 11, 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.