Quick answers
- Which hospitals does John M. Demay work at?
- Medicare's official clinician data lists John M. Demay at 1 hospital: St Lukes Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John M. Demay see patients?
- Medicare's clinician data lists 1 practice location in Sioux City, IA. Call before your visit to confirm the address.
- What is John M. Demay's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does John M. Demay accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Demay 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 John M. Demay?
- (712) 277-9370, as listed in official Medicare / NPI Registry data.
- What is John M. Demay's NPI number?
- 1366447294. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John M. Demay works
Medicare's Facility Affiliation Data lists John M. Demay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Lukes Regional Medical CenterSioux City, IA · Acute Care Hospital · CCN 160146
Practice locations
Addresses where John M. Demay is enrolled with Medicare (CMS data updated 2026-10-02).
- 2930 Hamilton Blvd, Suite 102Sioux City, IA 51104 (712) 277‑9370
Group practices
Medicare enrollment lists John M. Demay as a member of this group (CMS data updated 2026-10-02).
- Dermatology Associates of Siouxland PC3 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366447294 |
| 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