5
2 Ratings

![]() | ![]() | ![]() | ![]() |
| Dr. Bryan Hartland Lassner, MD | Christopher Carleo, MD | Dr. Thanh Quoc Andreakos, MD | Dr. Benjamin Alan Feinzimer, DO |
| Emergency Medicine | Emergency Medicine | Emergency Medicine | Emergency Medicine |
| Accepts New Patients | |||
| 14 Years of Experience | 28 Years of Experience | 32 Years of Experience | 18 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | |||
| Beaver Dam , WI | East Setauket , NY | Beaver Dam , WI | Waterford , WI |
| Med School: Chicago Medical School At Rosalind Franklin University-Medicine & Sciences | Med School: Suny Stony Brookhealth | Med School: Mcgovern Medical School At The Univ Of Texas Health Science Ctr At Houston | Med School: Midwestern University-Chicago College Of Osteopathic Medicine |
Current Profile | View Profile | View Profile | View Profile |
Dr. Bryan Hartland Lassner holds active and expired medical licenses in the states of Illinois and Wisconsin.
Medical Doctor with an active medical license in the state of Illinois that expires in 2026 and an expired medical license in the state of Wisconsin that expired in 2025.
Completed their residency at Metrohealth Medical Center.
Graduated from Chicago Medical School At Rosalind Franklin University-Medicine & Sciences in 2012.
Dr. Lassner's NPI number is 1871859884.










Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.