Quick answers
- Which hospitals does Liam M. Duffy work at?
- Medicare's official clinician data lists Liam M. Duffy at 5 hospitals: Campbell County Health, Chadron Hospital, Monument Health Custer Hospital, Monument Health Rapid City Hospital and Same Day Surgery Center LLC. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Liam M. Duffy see patients?
- Medicare's clinician data lists 1 practice location in Rapid City, SD. Call before your visit to confirm the address.
- What is Liam M. Duffy's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Liam M. Duffy accept Medicare assignment?
- Yes. Medicare's clinician data says Liam M. Duffy 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 Liam M. Duffy?
- (605) 755-5700, as listed in official Medicare / NPI Registry data.
- What is Liam M. Duffy's NPI number?
- 1902369820. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Liam M. Duffy works
Medicare's Facility Affiliation Data lists Liam M. Duffy at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Campbell County HealthGillette, WY · Acute Care Hospital · CCN 530002
- Chadron HospitalChadron, NE · Critical Access Hospital · CCN 281341
- Monument Health Custer HospitalCuster, SD · Critical Access Hospital · CCN 431323
- Monument Health Rapid City HospitalRapid City, SD · Acute Care Hospital · CCN 430077
- Same Day Surgery Center LLCRapid City, SD · Acute Care Hospital · CCN 430093
Practice locations
Addresses where Liam M. Duffy is enrolled with Medicare (CMS data updated 2026-10-02).
- 2805 5th StRapid City, SD 57701 (605) 755‑5700
Group practices
Medicare enrollment lists Liam M. Duffy as a member of this group (CMS data updated 2026-10-02).
- Monument Health Rapid City Hospital Inc564 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Rapid City
Clinicians with the same Medicare primary specialty in Rapid City, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902369820 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians