4.3
44 Ratings with 21 written Reviews

Overview based on verified provider data
![]() | ![]() | ![]() | ![]() |
| Dr. Jack Peter Kotlarz, MD | Dr. Jerome Sanford Weiskopf, MD | Dr. Bradley Nathanael Lemke, MD | Dr. Cathy Nguyen Burkat, MD |
| Otolaryngology-Head & Neck Surgery | Hand Surgery | Plastic Surgery | Ophthalmology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 39 Years of Experience | 57 Years of Experience | 51 Years of Experience | 27 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks Spanish, Polish | Speaks English | Speaks English | Speaks Spanish, Chinese |
| Rockford , IL | Rockford , IL | Mequon , WI | Madison , WI |
| Med School: University Of Illinois At Chicago College Of Medicine | Med School: University Of Michigan Medical School | Med School: Case Western Reserve University School Of Medicine | Med School: University Of Rochester School Of Medicine & Dentistry |
Current Profile | View Profile | View Profile | View Profile |
Dr. Jack Peter Kotlarz holds expired and active medical licenses in the states of Nevada, Illinois, Georgia, and Missouri.
Medical Doctor with an expired medical license in the state of Nevada that expired in 2025, an active medical license in the state of Illinois that expires in 2026, an active medical license in the state of Georgia that expires in 2027, and an expired medical license in the state of Missouri that expired in 2026.
Completed their residency at University Of Alabama Hospital.
Graduated from University Of Illinois At Chicago College Of Medicine in 1987.
Dr. Kotlarz's NPI number is 1922090646.










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.