DR. ALLAN CLARK GUNNERSON D.O.
NPI 1407081524
Internal Medicine - Gastroenterology in St George, UT

Q: What is Allan Gunnerson's NPI number?

The NPI number for Allan Gunnerson is 1407081524. It was assigned to this individual provider in the NPPES registry on May 19, 2009. The provider is also known as Dr. A Clark Gunnerson Do.

Q: What is Allan Gunnerson'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 Allan Gunnerson was last updated on September 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since May 19, 2009PECOS EnrolledAccepts Medicare Assignment

1380 E MEDICAL CENTER DR STE 4100, ST GEORGE, UT 84790(435) 251-3800 Get Directions Write a Review

NPPES record last updated: September 25, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Allan Clark Gunnerson D.o. NPPES

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

DR. ALLAN CLARK GUNNERSON D.O. (NPI 1407081524) is an individual gastroenterology provider in St George, Utah, licensed in Utah (9786624-1204) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS, is affiliated with Cedar City Hospital, and is a graduate of Nova Southeastern College Of Osteo Medicine (2009).

NPPES Registry Identity

NPI1407081524

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. ALLAN CLARK GUNNERSONCredential: D.O.

Location Address1380 E MEDICAL CENTER DR STE 4100St George, UT 84790-2156

Mailing AddressPo Box 27128Salt Lake City, UT 84127-0128 · (435) 251-3800

Phone(435) 251-3800

Sole ProprietorNo

Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 2009

Enumeration DateMay 19, 2009

Last NPPES UpdateSeptember 25, 2023

NPPES CertifiedSeptember 25, 2023

✔ NPI 1407081524 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 UT · 9786624-1204

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.

1380 E MEDICAL CENTER DR STE 4100, St George, UT 84790

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Other Names 1

Professional Name (2)Dr. A Clark Gunnerson Do

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare, Select Health, University of Utah Health Plans.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. Allan Clark Gunnerson D.o. 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.

PECOS PAC ID8527223312

PECOS Enrollment IDI20160815002559

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.

Medicare Billing Reassignment

Medicare enrollment records show Allan Gunnerson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ihc Health Services Inc

Same address

Maternal & Fetal Medicine

1380 E MEDICAL CENTER DR STE 1600
St George, UT 84790

Reassigned Medicare billing, Utah enrollment
3,691 clinicians in this Medicare group

NPI 1093013203 (435) 251-4150

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

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.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

324 services323 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

198 services194 patients

Dilation of esophagus 43450

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

86 services85 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

73 services72 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

73 services73 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

37 services37 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

37 services37 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

30 services25 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

19 services19 patients

Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope with mechanical snare 43251

This procedure involves the use of a thin, flexible instrument called an endoscope to visualize and remove abnormal growths, known as polyps, from the esophagus, stomach, or upper small bowel. A tool called a mechanical snare is used to safely cut and remove these growths.

11 services11 patients

Study of esophagus to assess movement 91010

This procedure, known as esophageal manometry, involves studying the esophagus or food pipe to evaluate its movement and pressure. It helps understand how well the esophagus can move food to the stomach. Involving a thin, flexible tube, it's a safe, minimally invasive test.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Cedar City Hospital

Acute Care Hospitals · Cedar City, UT

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number460007

Location1303 North Main StreetCedar City, UT 84721 · Iron County

Emergency services Birthing friendly

St. George Regional Hospital

Acute Care Hospitals · St George, UT

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number460021

Location1380 East Medical Center DriveSt George, UT 84790 · Washington County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 84790 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

$125.70 typical visit price

range $54.34 – $166.03

Typical copayment $31.42 (range $13.58 – $41.50)

Most-billed visit code 99204

Established Patient

$96.35 typical visit price

range $17.23 – $135.20

Typical copayment $24.08 (range $4.30 – $33.80)

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 9

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

DR. JOHN ERIKSON YAP M.D.

Internal Medicine (Gastroenterology)