Quick answers
- Which hospitals does Bryan H. Lassner work at?
- Medicare's official clinician data lists Bryan H. Lassner at 1 hospital: Marshfield Medical Center - Beaver Dam (MMC-BD). This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Bryan H. Lassner see patients?
- Medicare's clinician data lists 1 practice location in Beaver Dam, WI. Call before your visit to confirm the address.
- What is Bryan H. Lassner's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Bryan H. Lassner accept Medicare assignment?
- Yes. Medicare's clinician data says Bryan H. Lassner 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 Bryan H. Lassner?
- (954) 939-5000, as listed in official Medicare / NPI Registry data.
- What is Bryan H. Lassner's NPI number?
- 1871859884. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Bryan H. Lassner works
Medicare's Facility Affiliation Data lists Bryan H. Lassner 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
Practice locations
Addresses where Bryan H. Lassner is enrolled with Medicare (CMS data updated 2026-10-02).
- 707 S University AveBeaver Dam, WI 53916 (954) 939‑5000
Group practices
Medicare enrollment lists Bryan H. Lassner as a member of this group (CMS data updated 2026-10-02).
- Ihc Beaver Dam Emergency Physicians, LLC22 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Beaver Dam
Clinicians with the same Medicare primary specialty in Beaver Dam, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871859884 |
| 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