Quick answers
- Which hospitals does Gerard Demers work at?
- Medicare's official clinician data lists Gerard Demers at 2 hospitals: Marshfield Medical Center - Beaver Dam (MMC-BD) and Providence St Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gerard Demers see patients?
- Medicare's clinician data lists 3 practice locations, including San Diego, CA, Eureka, CA and Beaver Dam, WI. Call before your visit to confirm the address.
- What is Gerard Demers's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Gerard Demers accept Medicare assignment?
- Yes. Medicare's clinician data says Gerard Demers 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 Gerard Demers?
- (858) 499-2600, as listed in official Medicare / NPI Registry data.
- What is Gerard Demers's NPI number?
- 1487626032. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gerard Demers works
Medicare's Facility Affiliation Data lists Gerard Demers at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Marshfield Medical Center - Beaver Dam (MMC-BD)Beaver Dam, WI · Acute Care Hospital · CCN 520076
- Providence St Joseph HospitalEureka, CA · Acute Care Hospital · CCN 050006
Practice locations
Addresses where Gerard Demers is enrolled with Medicare (CMS data updated 2026-10-02).
- 16899 W Bernardo DrSan Diego, CA 92127 (858) 499‑2600
- 2700 Dolbeer StEureka, CA 95501 (707) 445‑8121
- 707 S University AveBeaver Dam, WI 53916 (954) 939‑5000
Group practices
Medicare enrollment lists Gerard Demers as a member of these groups (CMS data updated 2026-10-02).
- Providence Medical Foundation1,466 clinicians in the group
- Sharp Rees-Stealy Medical Group Inc884 clinicians in the group
- Ihc Beaver Dam Emergency Physicians, LLC22 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Rowan University School Of Osteopathic Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487626032 |
| 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