Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK EDWARD BREWSTER M.D.
NPI 1275773046
Internal Medicine - Gastroenterology in Watford City, ND

Q: What is Mark Brewster's NPI number?

The NPI number for Mark Brewster is 1275773046. It was assigned to this individual provider in the NPPES registry on March 5, 2009.

Q: What is Mark Brewster's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Mark Brewster was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since March 05, 2009PECOS Enrolled

709 4TH AVE NE, WATFORD CITY, ND 58854(701) 842-3000(701) 842-6248 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 23, 2026, Apr 17, 2024, Dec 14, 2015 (3 updates tracked since 2015).

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About Dr. Mark Edward Brewster M.d. NPPES

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

DR. MARK EDWARD BREWSTER M.D. (NPI 1275773046) is an individual gastroenterology provider in Watford City, North Dakota, licensed in North Dakota (20698) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS, is affiliated with Chi St Alexius Health, and is a graduate of Wayne State University School Of Medicine (2007).

NPPES Registry Identity

NPI1275773046

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. MARK EDWARD BREWSTERCredential: M.D.

Location Address709 4TH AVE NEWatford City, ND 58854-7628

Mailing Address709 4th Ave NeWatford City, ND 58854-7628 · (701) 842-3000 · Fax (701) 842-6248

Phone(701) 842-3000

Fax(701) 842-6248

Sole ProprietorYes

Medical School CMSWayne State University School Of MedicineGraduated 2007

Enumeration DateMarch 5, 2009

Last NPPES UpdateJuly 23, 20263 updates tracked since enumeration

NPPES CertifiedJuly 23, 2026

✔ NPI 1275773046 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in ND · 20698

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

709 4TH AVE NE, Watford City, ND 58854

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Medica, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Edward Brewster M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7315126091

PECOS Enrollment IDI20240604003137

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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

178 services139 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

80 services80 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Chi St Alexius Health

Acute Care Hospitals · Bismarck, ND

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number350002

Location900 E BroadwayBismarck, ND 58501 · Burleigh County

Emergency services Birthing friendly

Sanford Medical Center Bismarck

Acute Care Hospitals · Bismarck, ND

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number350015

Location300 N 7th StBismarck, ND 58506 · Burleigh County

Emergency services Birthing friendly

Garrison Memorial Hospital

Critical Access Hospitals · Garrison, ND

OwnershipVoluntary non-profit - Church

CMS Certification Number351303

Location407 3rd Ave SEGarrison, ND 58540 · Mclean County

Emergency services

Sakakawea Medical Center - Cah

Critical Access Hospitals · Hazen, ND

OwnershipVoluntary non-profit - Private

CMS Certification Number351310

Location510 8th Avenue NEHazen, ND 58545 · Mercer County

Emergency services

Chi St Alexius Health Dickinson

Critical Access Hospitals · Dickinson, ND

OwnershipVoluntary non-profit - Church

CMS Certification Number351336

Location2500 Fairway StreetDickinson, ND 58601 · Stark County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 58854 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$127.45 typical visit price

range $55.75 – $168.12

Typical copayment $31.86 (range $13.93 – $42.03)

Most-billed visit code 99204

Established Patient

$98.29 typical visit price

range $18.11 – $137.65

Typical copayment $24.57 (range $4.52 – $34.41)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

MCKENZIE COUNTY HEALTHCARE SYSTEMS INC

Clinic/Center

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 842-3771

MRS. AFTON MCKENZIE SCHAPER FNP

Nurse Practitioner (Family)

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 842-3740

MRS. JESSICA M COMEAU FNP

Nurse Practitioner (Family)

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 842-3771

MCKENZIE COUNTY HEALTHCARE SYSTEMS INC

Non-Pharmacy Dispensing Site

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 842-3771

VINCENT ADJETEY MD

Pediatrics

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 842-3771

DR. DAVID PAUL HARRIES MD

Pain Medicine (Interventional Pain Medicine)

709 4TH AVE NE, PAIN MANAGEMENT CLINIC
WATFORD CITY, ND 58854

McKenzie County (701) 842-3000

DR. GARY W RAMAGE M.D.

General Practice

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 842-3000

MICHELLE WISEHART BA

Case Manager/Care Coordinator

709 4TH AVE NE
WATFORD CITY, ND 58854

McKenzie County (701) 334-2381

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 Mark Brewster's NPI number?

The NPI number for Mark Brewster is 1275773046. It was assigned to this individual provider in the NPPES registry on March 5, 2009.

Where is Mark Brewster located?

Mark Brewster practices at 709 4th Ave NE, Watford City, ND 58854. The listed phone number is (701) 842-3000.

What is Mark Brewster's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Mark Brewster enrolled in Medicare?

Yes. Mark Brewster is registered in the Medicare PECOS enrollment system.

What insurance does Mark Brewster accept?

Health plans from Blue Cross Blue Shield of North Dakota, Medica and Sanford Health Plan list Mark Brewster 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.

Is Mark Brewster affiliated with any hospitals?

According to CMS data, Mark Brewster is affiliated with Chi St Alexius Health, Sanford Medical Center Bismarck, Garrison Memorial Hospital, Sakakawea Medical Center - Cah and Chi St Alexius Health Dickinson.

When was this NPI record last updated?

The NPPES record for Mark Brewster was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.