
Marcus A Crosby, MD
Radiation Oncology
Highlights
Age Groups Seen
- Adult 21-65
- Older Adult >65
Languages
- Portuguese
- English
Gender
MaleLocations
- Emplify Health La Crosse Radiation Oncology
- 724 Denton Street, La Crosse, WI 54601
- Get Directions
- Phone: 608-775-2385
- Emplify Health La Crosse Hematology & Oncology
- 724 Denton Street, La Crosse, WI 54601
- Get Directions
- Phone: 608-775-2385
- Emplify Health Tomah Cancer & Blood Disorder
- 505 Gopher Drive, Tomah, WI 54660
- Get Directions
- Phone: 608-567-2820
Expertise
Education
- Residency: Detroit Medical Center, Radiation Oncology, 2018
- Residency: Gundersen Medical Foundation, Internal Medicine, 2012
- Medical School: Medical College of Wisconsin, 2009
Board Certifications
- Radiation Oncology: American Board of Radiology, 2021
Insurance
- Aetna Health Management
- Amerigroup Iowa Inc
- Anthem BCBS WI
- Arise Health Plan/ WPS
- BCBS MN
- Benefit Plan Administrators
- Care Wisconsin
- CIGNA
- Community Link
- Group Health Cooperative of Eau Claire
- HealthEOS by Multiplan
- Healthpartners, Inc
- Independent Care Health Plan Medicaid
- Medica IFB
- Meritain Health
- MHS Health
- Midlands Choice
- Quartz
- The Alliance
- Tricare West
- Ucare Minnesota
- United Healthcare Inc.
- WCA Group Health Trust
- Wellmark BCBS IA
- Wisconsin Physician Services
Reviews
4.9 of 5 stars
77 Ratings, 18 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 9/23/2026
Great visit, very little wait time, everyone was very professional and friendly.
- 5 out of 5 starsReviewed on 9/19/2026
The staff in this department are amazing and so accommodating for appointment times. They are all kind and compassionate too.
- 5 out of 5 starsReviewed on 9/13/2026
I appreciate the efficiency and organization demonstrated by the whole department.
- 5 out of 5 starsReviewed on 9/11/2026
First time meeting Dr Crosby. He is well informed, a n excellent communicator , through, and personable.
- 5 out of 5 starsReviewed on 8/5/2026
Great staff in radiation department. They all made me feel very relaxed! Very friendly and kind!
- 5 out of 5 starsReviewed on 8/2/2026
Thanks to Dr Crosby for being who he is.
- 5 out of 5 starsReviewed on 8/2/2026
May they continue to be generous and treat the sick with love and kindness; that is how Jesus would do it.
- 5 out of 5 starsReviewed on 7/19/2026
Just like clockwork.
- 5 out of 5 starsReviewed on 7/17/2026
Great experience
- 5 out of 5 starsReviewed on 7/12/2026
I'm very impressed with Gunderson. Everyone is so kind, helpful, and very good Drs and staff. They all care alot about thier patients and do a fantastic job at caring for them. My experience has been wonderful.
- 5 out of 5 starsReviewed on 4/25/2026
The visit didn't accomplish too much because we didn't have the necessary scan pictures Dr Crosby needed. Not his fault. All should be well eventually.
- 5 out of 5 starsReviewed on 3/29/2026
An excellent experience, everyone was kind, fun, upbeat, supportive, informative.
- 5 out of 5 starsReviewed on 2/27/2026
Educational
- 5 out of 5 starsReviewed on 1/18/2026
Yes, I appreciate very much my treatment with your urology and so far the radiation, but I haven't had any radiation yet. I just had my memory foam position placed. But I've been very happy with all of the people and nurses that have treated me and I feel very safe and secure with your help and service and I hope it continues. Thank you very much.
- 5 out of 5 starsReviewed on 1/16/2026
Dr. Crosby took time with us and was very thorough!
- 5 out of 5 starsReviewed on 12/4/2025
Dr crosby answered all the questions that I ask him in a way that I could understand
- 5 out of 5 starsReviewed on 10/24/2025
Was a very detailed consultation that made me feel good with the recommendations that have been presented to me.
- 5 out of 5 starsReviewed on 10/11/2025
The girls in the Oncology department were so nice and explained everything they were going to do, cheerful manner which helped put you at ease. I have 20 radiation treatments to do and they have helped me feel less fearful. Good team, very great full.
- 5 out of 5 starsReviewed on 9/23/2026
Great visit, very little wait time, everyone was very professional and friendly.
- 5 out of 5 starsReviewed on 9/19/2026
The staff in this department are amazing and so accommodating for appointment times. They are all kind and compassionate too.
- 5 out of 5 starsReviewed on 9/13/2026
I appreciate the efficiency and organization demonstrated by the whole department.
- 5 out of 5 starsReviewed on 9/11/2026
First time meeting Dr Crosby. He is well informed, a n excellent communicator , through, and personable.
- 5 out of 5 starsReviewed on 8/5/2026
Great staff in radiation department. They all made me feel very relaxed! Very friendly and kind!
- 5 out of 5 starsReviewed on 8/2/2026
Thanks to Dr Crosby for being who he is.
- 5 out of 5 starsReviewed on 8/2/2026
May they continue to be generous and treat the sick with love and kindness; that is how Jesus would do it.
- 5 out of 5 starsReviewed on 7/19/2026
Just like clockwork.
- 5 out of 5 starsReviewed on 7/17/2026
Great experience
- 5 out of 5 starsReviewed on 7/12/2026
I'm very impressed with Gunderson. Everyone is so kind, helpful, and very good Drs and staff. They all care alot about thier patients and do a fantastic job at caring for them. My experience has been wonderful.
- 5 out of 5 starsReviewed on 4/25/2026
The visit didn't accomplish too much because we didn't have the necessary scan pictures Dr Crosby needed. Not his fault. All should be well eventually.
- 5 out of 5 starsReviewed on 3/29/2026
An excellent experience, everyone was kind, fun, upbeat, supportive, informative.
- 5 out of 5 starsReviewed on 2/27/2026
Educational
- 5 out of 5 starsReviewed on 1/18/2026
Yes, I appreciate very much my treatment with your urology and so far the radiation, but I haven't had any radiation yet. I just had my memory foam position placed. But I've been very happy with all of the people and nurses that have treated me and I feel very safe and secure with your help and service and I hope it continues. Thank you very much.
- 5 out of 5 starsReviewed on 1/16/2026
Dr. Crosby took time with us and was very thorough!
- 5 out of 5 starsReviewed on 12/4/2025
Dr crosby answered all the questions that I ask him in a way that I could understand
- 5 out of 5 starsReviewed on 10/24/2025
Was a very detailed consultation that made me feel good with the recommendations that have been presented to me.
- 5 out of 5 starsReviewed on 10/11/2025
The girls in the Oncology department were so nice and explained everything they were going to do, cheerful manner which helped put you at ease. I have 20 radiation treatments to do and they have helped me feel less fearful. Good team, very great full.