Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

General Surgery

Shannon J. Gallagher, MD

Works at hospitals in Sturgeon Bay, WI · Wisconsin

Summary

Shannon J. Gallagher, MD (General Surgery) is listed by Medicare at 1 hospital in Sturgeon Bay, WI. NPI 1124523667. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Shannon J. Gallagher, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

General SurgeryPrimary specialty
YesAccepts Medicare assignment
8Years since medical school (graduated 2018)
University Of Wisconsin School Of MedicineMedical school
MaleGender (as listed)
Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.Group practice (+1 more)

Quick answers

Which hospitals does Shannon J. Gallagher work at?
Medicare's official clinician data lists Shannon J. Gallagher at 1 hospital: Door County Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Shannon J. Gallagher see patients?
Medicare's clinician data lists 3 practice locations, including Sturgeon Bay, WI, Rhinelander, WI and Tomahawk, WI. Call before your visit to confirm the address.
What is Shannon J. Gallagher's specialty?
Medicare lists General Surgery as the primary specialty.
Does Shannon J. Gallagher accept Medicare assignment?
Yes. Medicare's clinician data says Shannon J. Gallagher accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Shannon J. Gallagher?
(920) 746-1060, as listed in official Medicare / NPI Registry data.
What is Shannon J. Gallagher's NPI number?
1124523667. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Shannon J. Gallagher works

Medicare's Facility Affiliation Data lists Shannon J. Gallagher at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Shannon J. Gallagher is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Shannon J. Gallagher as a member of these groups (CMS data updated 2026-10-02).

  • Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.574 clinicians in the group
  • Door County Memorial Hospital93 clinicians in the group

Specialties

Find other General Surgery doctors in Wisconsin →

Other general surgeons in Sturgeon Bay

Clinicians with the same Medicare primary specialty in Sturgeon Bay, WI — not a recommendation.

All general surgeons in Sturgeon Bay →

Clinician information

CredentialMD
Medical schoolUniversity Of Wisconsin School Of Medicine
Graduation year2018
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1124523667
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians