Highlights
Age Groups Seen
- Adult 21-65
- Older Adult >65
Languages
- English
Gender
MaleAbout
Care Philosophy
I provide the best medical care I can by integrating cardiothoracic care and general surgery expertise with an individualized approach, treating each patient as though they were a part of my own family.
Personal Statement
In my free time, I enjoy water sports, many outdoor activities and spending any time I can with my wife, daughter and our dogs.
Clinical Interests
- Coronary revascularization
- Esophageal cancer
- Laser-lead extraction for pacemaker and defibrillator
- Lung cancer
- Thoracic aortic surgery
- Transcutaneous aortic valve replacement (TAVR)
- Valvular heart disease
Locations
- 720 South Van Buren Street, Suite 303, Green Bay, WI 54301
- Get Directions
- Phone: 866-433-9621
- Fax: 920-433-0565
Expertise
Education
- Certificate: University of Arizona College of Medicine, 2025
- Fellowship: University of Arizona Hlth Sci Ctr - Thoracic Surg, Cardiothoracic Surgery, 2025
- Certificate: Mayo Clinic School of Medicine, 2023
- Fellowship: Mayo Clinic - Rochester Methodist Hospital, Surgery, Trauma Critical Care, 2023
- Certificate: Columbia University College of Physicians and Surgeons, 2022
- Residency: Bassett Medical Center, Surgery, General, 2022
- Doctor of Medicine: Michigan State University College of Human Medicine, 2017
- Bachelor of Science: University of Wisconsin School of Medicine and Public Health, 2011
Board Certifications
- Surgical Critical Care: American Board of Surgery, 2024
- Surgery (General Surgery): American Board of Surgery, 2023
Insurance
- Aetna-Medicare Advantage
- Allstate Benefits f/k/a Allied Beneifts
- Anthem Blue Cross/Blue Shield - HMO, PPO, Blue Priority, Medicare Advantage and Medicaid
- Aspirus Health Plan
- BCBS MI (Upper Peninsula clinics only)
- Care Wisconsin
- Children's Community Health Plan Medicaid and Marketplace
- Cigna
- CommonGround Healthcare
- Community Care Inc.
- Evernorth Behavioral Health
- Exceedent
- First Health
- Galaxy Health Network
- Health Partners - Robin
- Health Payment Systems
- Health Smart
- HealthEOS
- Humana/Choicecare - HMO, PPO and Medicare Advantage
- Inclusa
- Independent Care (ICare)-Medicare Advantage
- Lakeland Care
- Managed Health Services-Medicaid
- Medicare
- MI Medicaid (Upper Michigan and clinics in Wisconsin counties adjoining MI border)
- Molina Healthcare-Medicaid only
- Multiplan
- My Choice Wisconsin
- Network Health Plan - Commercial and Medicare Advantage
- Optum Behavioral Health
- Preferred One
- Security Health Plan - Medicaid
- Three Rivers Provider Network
- Tricare
- Trilogy - Commercial
- United Healthcare - HMO, PPO, UMR, Medicare Advantage, and Medicaid
- UPHP-Commercial, Medicaid (Upper Michigan and select Northern WI clinics)
- WEA Trust Preferred
- WI Medicaid
- WPS Health Insurance
- WPS Health Plan
- Zelis
Reviews
4.9 of 5 stars
49 Ratings, 17 ReviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 7/17/2026
Dr. Damroth has all the qualities you would hope for in a doctor. He took time to review test results from several years ago, answered all my questions, and gave me a greater sense of confidence going into cancer treatment.
- 5 out of 5 starsReviewed on 7/1/2026
Excellent!
- 5 out of 5 starsReviewed on 6/15/2026
Very satisfied
- 5 out of 5 starsReviewed on 6/2/2026
I wish I had access to the CT scan imaging and I still have a concern about what is safe for me to be doing at work as a full time housekeeper with no work limitations and the fact that sometimes like during the summer I extract carpets in residence halls and have to slide furniture back and beds.... Even though I am not lifting it.... It is still strenous work. At graduation time there are stacks of chairs that need to be moved with a dolly and I forgot to mention this as well to the physician assistant. Im still concerned and have high anxiety over my diagnosis of a 4.4 cm x 4.4 cm mid aorta dilation and the risk my job poses at causing a dissection or rupture.
- 3 out of 5 starsReviewed on 5/1/2026
took almost an hour for 15 minute chat
- 5 out of 5 starsReviewed on 3/9/2026
Very confident in the ability of the people that will provide the care I will receive.
- 5 out of 5 starsReviewed on 2/25/2026
I was extremely satisfied with the care I received; all was clearly explained in detail with full understanding.
- 5 out of 5 starsReviewed on 2/9/2026
This dr is the best we have ever met. He treated the family as well as the patient every step of the way. We need more providers like him.
- 5 out of 5 starsReviewed on 2/9/2026
I left feeling confident that I was being cared for by a knowledgeable and competent physician.
- 5 out of 5 starsReviewed on 2/2/2026
It was so nice having everything explained to me in terms I could easily understand. A very pleasant experience that relieved much worry and concern. Trust for sure.
- 5 out of 5 starsReviewed on 1/26/2026
Great
- 5 out of 5 starsReviewed on 1/7/2026
I was very impressed with Dr. Karl. He explained himself very well and clear, showed us pictures and diagrams, and was very fluent. I would recommend him to everyone I know.
- 5 out of 5 starsReviewed on 1/5/2026
I appreciated being shown the images of my CT scan and the explanation Dr. Damroth gave. I also really appreciated the clear information NP Chris provided.
- 5 out of 5 starsReviewed on 12/29/2025
From the check in process, to our nurse, nurse practitioner and Dr Karl made me feel at ease with my upcoming surgery!! Answered all of my questions, explained the procedure (before and after) weren't in a hurry!!! Great TEAM
- 5 out of 5 starsReviewed on 12/15/2025
Everything was fine
- 5 out of 5 starsReviewed on 12/1/2025
It was the best. Everyone was so kind and helpful. It didn't matter where I went I got smiles and help. I really appreciated it. It was such a nice feeling to be treated like you were a person and not just a number.
- 5 out of 5 starsReviewed on 11/10/2025
Everyone was very helpful