
Highlights
Age Groups Seen
- Pediatrics
- Teenagers
- Adults
- Geriatrics
Languages
- English
Provider Gender
MaleAbout James Warneke and Banner Safety Practices
Care Philosophy
I seek to bring accessible, expert care to each of my patients.
Specializing In
Surgical treatment of malignancies including, melanoma, lymphoma and sarcoma.
Interests & Activities
I enjoy bike riding, hiking and visiting national parks.
Research and Publications
Hospital Affiliations
Banner - University Medical Center South
Banner - University Medical Center Tucson
Preferred Phone Number
520-694-2873
Expertise
Education
- Fellowship: Roswell Park Cancer Institute, Surgical Oncology, 1989
- Residency: University of Arizona Health Sciences Center-Neonatology, General Surgery, 1987
- Internship: University of Arizona Health Sciences Center-Neonatology, Vascular Surgery, 1983
- Medical School: David Geffen School of Medicine at UCLA, 1982
Board Certifications
- Surgery (General Surgery): American Board of Surgery, 2024
Video
Locations
- University of Arizona Cancer Center
- 3838 North Campbell Avenue, Building 1, Tucson, AZ 85719
Testimonials
4.9 out of 5.0
348 ratingsAll patient experience ratings and testimonials are submitted by actual patients and verified by a leading independent customer experience company. Patient identities are withheld to ensure confidentiality and privacy.
- 5 out of 5 starsReviewed on 11/21/2025
He is professional and personable plus very experienced.
- 5 out of 5 starsReviewed on 11/2/2025
Dr Warneke was compassionate, respectful, down to earth, and totally present to me and my husband. By that I mean he looked me in the eye and heard what I was saying. He took his time as if he hadn't a care in the world or any other patient waiting in the wings. I have the utmost confidence in him being my oncology specialist.
- 5 out of 5 starsReviewed on 11/2/2025
Seems to be well informed
- 5 out of 5 starsReviewed on 10/15/2025
Very knowledgeable and down to earth talk to me in a way that I understood
- 5 out of 5 starsReviewed on 10/15/2025
Dr Warnecke listens to all my concerns and explains everything in detail.
- 5 out of 5 starsReviewed on 10/5/2025
Care received by Dr. Warneke and Banner was top-notch!
- 5 out of 5 starsReviewed on 10/5/2025
Kind caring, explained things in simple terms.
- 5 out of 5 starsReviewed on 9/25/2025
Great man to talk to, explained everything clearly and showed his respect to me and my parents.
- 5 out of 5 starsReviewed on 9/11/2025
He is compassionate, extremely knowledgeable and did a terrific job with my surgery.
- 5 out of 5 starsReviewed on 9/7/2025
He's very experienced and knowledgeable. He was also very personable and put me at ease while explaining everything clearly. I felt very confident in his skills.
- 5 out of 5 starsReviewed on 9/1/2025
Again, very responsive to my current Melanoma issues and did an excellent job in explaining my options. Dr. Warneke was also very understanding of my past History of Melanoma.
- 5 out of 5 starsReviewed on 8/27/2025
He is very thorough and very nice man
- 5 out of 5 starsReviewed on 8/24/2025
Excellent MD and surgeon
- 5 out of 5 starsReviewed on 8/21/2025
Personable, knowledge, no BS, I'm one of the family
- 5 out of 5 starsReviewed on 8/20/2025
He seems extremely knowledgeable. Has a calm demeanor and explained medical terms very well.
- 5 out of 5 starsReviewed on 8/13/2025
He was compassionate, professional and explained everything that was going to happen and put me at ease.
- 5 out of 5 starsReviewed on 8/13/2025
Incredible doctor who has treated me for 5 years
- 5 out of 5 starsReviewed on 8/11/2025
Excellent Doctor
- 5 out of 5 starsReviewed on 8/10/2025
Very helpful and personable doctor
- 5 out of 5 starsReviewed on 8/6/2025
No nonsense, skilled, explains procedures
- 5 out of 5 starsReviewed on 8/2/2025
Very friendly doctor and explained everything he was doing and made me feel comfortable about what I was going through
- 5 out of 5 starsReviewed on 7/27/2025
Great doctor. Very comfortable to work with
- 5 out of 5 starsReviewed on 7/27/2025
Best skin cancer surgeon in AZ.
- 5 out of 5 starsReviewed on 7/24/2025
He was very good to me and informative.
- 5 out of 5 starsReviewed on 7/13/2025
He is a super nice doctor who explained everything super well.
- 5 out of 5 starsReviewed on 6/29/2025
Dr. Warneke is AWESOME!!
- 5 out of 5 starsReviewed on 6/24/2025
He is an awesome doctor. We loved the personal interactions with him. What nice person!
- 5 out of 5 starsReviewed on 6/19/2025
He got the job done. Removed my cancer and explained it to me
- 5 out of 5 starsReviewed on 6/12/2025
Instilled confidence and competence
- 5 out of 5 starsReviewed on 6/12/2025
Excellence
- 5 out of 5 starsReviewed on 6/8/2025
He engages right away, listens, and responds with the information I want plus more information I didn't know I needed.
- 5 out of 5 starsReviewed on 5/18/2025
He is very experienced, competent and takes the time to explain his opinions and recommendations. In addition, he's very reassuring and personable.
- 5 out of 5 starsReviewed on 5/14/2025
He's a very skilled surgeon and a compassionate person who really cares.
- 5 out of 5 starsReviewed on 5/8/2025
Our conversation was a neighbor to neighbor level to level. I left knowing my direction
- 5 out of 5 starsReviewed on 4/20/2025
Dr. Warneke is personable, friendly and so quick. He gets right to the point, anticipating my next question and explaining what to expect as healing progresses.
- 5 out of 5 starsReviewed on 4/17/2025
I appreciated his knowledge, kindly manner and the interest he showed for my problem.
- 5 out of 5 starsReviewed on 4/17/2025
I thought he was great. So thankful he went ahead and did my surgery then.
- 5 out of 5 starsReviewed on 4/9/2025
Excellent Dr and so personable
- 5 out of 5 starsReviewed on 4/7/2025
He was very knowledgeable and friendly.
- 5 out of 5 starsReviewed on 4/6/2025
His strong reputation and previous patient comments as well as his positive and straightforward doctoring.
- 5 out of 5 starsReviewed on 4/3/2025
Polite, kept me informed, friendly
- 5 out of 5 starsReviewed on 3/16/2025
He was extremely attentive to my needs and very supportive
- 5 out of 5 starsReviewed on 3/13/2025
Great surgeon and very personable
- 5 out of 5 starsReviewed on 3/12/2025
This doctor is good. Very personal and easy to talk to. Very confident. I like him very much.
- 5 out of 5 starsReviewed on 3/11/2025
He took excellent care of my problem.
- 5 out of 5 starsReviewed on 2/24/2025
He really knows what he's doing.
- 5 out of 5 starsReviewed on 2/14/2025
Dr. Warneke was very professional, kind and caring. He is a happy person that enjoys his job and when you enjoy your job you succeed.
- 5 out of 5 starsReviewed on 2/12/2025
Personable, Extremely knowledgeable very professional.
- 5 out of 5 starsReviewed on 2/8/2025
Dr. Warneke has great interpersonal skills that put me at ease during my visit. He also showed he is extremely knowledgeable in dealing with my issue.
- 5 out of 5 starsReviewed on 1/29/2025
Great doctor!! Compassionate and hands on person.
- 5 out of 5 starsReviewed on 1/26/2025
What a wonderful doctor. I appreciated how he talked and listened to me. He did his job well.
- 5 out of 5 starsReviewed on 1/17/2025
He is personable and caring! Excellent reputation!
- 5 out of 5 starsReviewed on 1/16/2025
He was very friendly, interested in my issue, treated me that day and spent time with me . He also had a wonderful staff and Resident with him. He was very kind
- 5 out of 5 starsReviewed on 1/16/2025
Doctor Warneke is very personable, competent and compassionate.
- 5 out of 5 starsReviewed on 1/10/2025
Dr. Warneke has a very pleasurable bedside manner - he should be cloned!!
- 5 out of 5 starsReviewed on 11/14/2024
He listened
- 5 out of 5 starsReviewed on 11/7/2024
Professional, thorough and informative
- 5 out of 5 starsReviewed on 10/20/2024
He's a great surgeon and doctor and a caring man.
- 5 out of 5 starsReviewed on 10/19/2024
Very kind, courteous, informative and humorous doctor
- 5 out of 5 starsReviewed on 10/7/2024
He has always been kind, compassionate and explains everything in detail.
- 5 out of 5 starsReviewed on 10/6/2024
I think he is one of the best in his field.
- 5 out of 5 starsReviewed on 9/30/2024
Dr Warneke is very knowledgeable and very patient and explained everything.
- 5 out of 5 starsReviewed on 9/15/2024
A professional. Got me in quickly and resolved quickly
- 5 out of 5 starsReviewed on 9/13/2024
Informative and compassionate.
- 5 out of 5 starsReviewed on 9/1/2024
You get the feeling he really cares about YOU.
- 5 out of 5 starsReviewed on 8/25/2024
James is naturally warm, friendly, knowledgeable and caring.
- 5 out of 5 starsReviewed on 8/25/2024
He took time with me and answered all of my questions.
- 5 out of 5 starsReviewed on 8/22/2024
He was personable, informative and caring, did great follow up and his support staff was great.
- 5 out of 5 starsReviewed on 8/19/2024
Great surgeon
- 5 out of 5 starsReviewed on 8/17/2024
Excellent care
- 5 out of 5 starsReviewed on 7/25/2024
I like him.
- 5 out of 5 starsReviewed on 7/15/2024
Professionalism
- 5 out of 5 starsReviewed on 7/3/2024
Dr. Warneke was calm, informative and reassuring. I arrived highly anxious and left feeling positive about my diagnosis.
- 5 out of 5 starsReviewed on 5/29/2024
So nice, great bedside manner.
- 5 out of 5 starsReviewed on 5/27/2024
In addition to his warm yet professional demeanor, he was very thorough and carefully explained how and why he would be proceeding with my care. He is a thoughtful listener, but also was very engaging and immediately put me at ease. I never felt rushed and he was attentive to my questions and concerns.
- 5 out of 5 starsReviewed on 5/23/2024
He has always kept informed of what the next steps would be and spent the time to answer all my questions related to the surgery and after care
- 5 out of 5 starsReviewed on 5/20/2024
He cares
- 5 out of 5 starsReviewed on 5/17/2024
He appeared very relaxed and listened to all I had to say and ask. He was even very receptive to answering my husbands questions.
- 5 out of 5 starsReviewed on 5/17/2024
James' social skills combined with his knowledge and dexterity skills make him truly a phenomenal practitioner
- 5 out of 5 starsReviewed on 4/28/2024
I liked how straight forward Dr Warneke was. He listened and responded to all my questions.
- 5 out of 5 starsReviewed on 2/11/2024
Great team— professional and reassuring. I have complete confidence in Drs Warneke and Nallagangula and their teams.
- 5 out of 5 starsReviewed on 1/5/2024
Dr. Warneke and staff were excellent. Dr. Warneke saw me right away with the problem I had encountered.
- 5 out of 5 starsReviewed on 10/22/2023
Dr. Warmeke has taken extraordinary care of me.
- 5 out of 5 starsReviewed on 10/9/2023
Dr. Warnecke treats me individually, not as a number. He is very kind, considerate and explains everything in detail.
- 5 out of 5 starsReviewed on 3/19/2023
Dr. Warneke is a warm, compassionate doctor. He always answers all my questions in a way I understand.
- 5 out of 5 starsReviewed on 9/1/2022
Dr. Warneke is a life saver and having his level of talented doctors and med students available is really important to me. I found AZ Cancer Center when no one else would help me.
- 5 out of 5 starsReviewed on 11/25/2025
Personable, highly recommended by VA staff.
- 5 out of 5 starsReviewed on 1/8/2025
Knowledgeable and caring
- 5 out of 5 starsReviewed on 11/18/2024
Extremely professional and took time to explain thoroughly what I had going on. It was clear he had previously looked at the records and copy of an earlier CT scan before meeting with me.
- 5 out of 5 starsReviewed on 11/13/2024
Good explanations, easy going personality, recommended by friends who are medical
- 5 out of 5 starsReviewed on 11/12/2024
Very knowable.
- 5 out of 5 starsReviewed on 11/3/2024
Answered questions and knowledgeable about the medical situation.
- 5 out of 5 starsReviewed on 7/19/2024
Very pleasant demeanor, respectful and clear with communication.
- 5 out of 5 starsReviewed on 4/14/2024
He's a great, caring doctor.
- 5 out of 5 starsReviewed on 1/14/2024
I like Dr. Warneke and his staff.
- 4 out of 5 starsReviewed on 11/14/2024
Dr, Warneke is not only a good surgeon but has a very nice bed side manner and his follow up is very good
- 4 out of 5 starsReviewed on 5/16/2024
Extremely knowledgeable and capable professional with a great deal of experience. Terrific personable manner.
- 4 out of 5 starsReviewed on 7/1/2023
Dr. Warneke is excellent as are many other doctors I have seen there.
- 4 out of 5 starsReviewed on 6/18/2025
My understanding was that I would not take as much time to heal from my surgery. Dr. Warneke was very skilled and friendly.
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