
John Twelker, OD
Pediatric OphthalmologyPediatric OptometryOptometry
Highlights
Age Groups Seen
- Pediatrics
- Teenagers
- Adults
Languages
- English
Provider Gender
MaleAbout John Twelker and Banner Safety Practices
Care Philosophy
My practice has a team philosophy that strives to deliver comprehensive, expert care.
Specializing In
Optometry
Ophthalmology
Vision Science
Public Health
Interests & Activities
I enjoy riding my bike and listening to music, especially live music!
Research and Publications
Hospital Affiliations
Banner - University Medical Center South
Preferred Phone Number
520-694-1460
Expertise
Education
- Medical Education: UC Berkeley School of Optometry, 1992
Video
Locations
- Banner - University Medicine Ophthalmology Clinic
- 707 North Alvernon Way, Suite 301, Tucson, AZ 85711
- Banner - University Medicine Multispecialty Services Clinic
- 7165 North Pima Canyon Drive, Tucson, AZ 85718
Testimonials
4.9 out of 5.0
298 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 12/8/2025
Dr. Twelker is very proficient and caring. Always provides the best service and care for my eyes.
- 5 out of 5 starsReviewed on 11/17/2025
Very professional
- 5 out of 5 starsReviewed on 11/10/2025
Dr. Twelker took my concerns seriously and helped me with my issue.
- 5 out of 5 starsReviewed on 11/3/2025
Very professional but very easy to talk to. He listened to all my concerns regarding my eyes and took the time examining them to prescribe two new refractions
- 5 out of 5 starsReviewed on 10/3/2025
Dr. Twelker is always pleasant, answered all my questions and addressed my concerns.
- 5 out of 5 starsReviewed on 9/22/2025
Listens, explains issues well, friendly, clearly knowledgeable
- 5 out of 5 starsReviewed on 7/4/2025
He provided clear explanation of medical problem and treatment options.
- 5 out of 5 starsReviewed on 5/16/2025
Caring friendly expert
- 5 out of 5 starsReviewed on 11/4/2024
He was very friendly and seemed to be genuinely concerned about my vision issues. I have faith in his care and expertise.
- 5 out of 5 starsReviewed on 9/14/2024
Dr Twelker treated me professionally. He explained my tests thoroughly and listened to my concerns regarding my tests.
- 5 out of 5 starsReviewed on 8/29/2024
Thorough eye examination and discussion of results
- 5 out of 5 starsReviewed on 6/27/2024
Good interaction. He was very easy to speak with and very professional.
- 5 out of 5 starsReviewed on 5/22/2024
Dr. Twelker is very knowledgeable and explains everything very thorough.
- 5 out of 5 starsReviewed on 5/20/2024
He is not trying to upsell a new prescription. He is genuine, honest, and had a good bedside manner. His staff thinks highly of him. He seems to take care of all those around him. My kid's pediatrician recommended him, the whole family sees Doctor Twelker now.
- 5 out of 5 starsReviewed on 5/6/2024
Excellent doctor!
- 5 out of 5 starsReviewed on 4/8/2024
Dr Twelker was FANTASTIC! He addressed all my concerns and questions and although I know he was busy, did not rush to make sure I understood everything. He is excellent with his patient communication and made sure I understood everything in a very compassionate and caring way!
- 5 out of 5 starsReviewed on 4/1/2024
He explained things clearly. He listened to my input and took it seriously. He diagnosed a potentially serious condition and reassured me it was treatable. He was positive and encouraging. He seems to really know his stuff.
- 5 out of 5 starsReviewed on 2/20/2024
He is excellent at answering my questions and giving me options for optimal eye health
- 5 out of 5 starsReviewed on 2/19/2024
Dr Twelker is awesome always very caring and always meeting and serving our needs
- 5 out of 5 starsReviewed on 2/12/2024
Dr Twelker is very thorough and listens.
- 5 out of 5 starsReviewed on 2/3/2024
I have had appointments with Dr. Twelker for a few years now, and I find him to be very friendly and caring.
- 5 out of 5 starsReviewed on 1/22/2024
He is knowledgeable, friendly, and professional.
- 5 out of 5 starsReviewed on 1/18/2024
Interacting with Dr. Twelker is always pleasant. He is very knowledgeable and takes time to talk with me about my eye health and answers all of my questions.
- 5 out of 5 starsReviewed on 12/14/2023
Dr. Twelker was knowledgeable, informative, friendly.
- 5 out of 5 starsReviewed on 12/14/2023
Excellent ophthalmologist.
- 5 out of 5 starsReviewed on 10/23/2023
Easy going and friendly.
- 5 out of 5 starsReviewed on 9/7/2023
Dr. Twelker was very explanatory about my vision and future care. He took the time to discuss my current health issue that was affecting my vision.
- 5 out of 5 starsReviewed on 8/21/2023
He is great!
- 5 out of 5 starsReviewed on 8/17/2023
Explains very well what he is doing.
- 5 out of 5 starsReviewed on 8/14/2023
Professional, skilled, pleasant. Rita, his assistant was excellent as well.
- 5 out of 5 starsReviewed on 8/11/2023
I have been with Dr Twelker for probably close to 20 years and I trust him. He takes the time to listen and explains anything you're not sure of. I highly recommend him to everyone I speak with.
- 5 out of 5 starsReviewed on 7/24/2023
Dr. Twelker is wonderful. Knowledgeable, professional and I feel comfortable with his care.
- 5 out of 5 starsReviewed on 6/8/2023
Knowledge, efficiency, caring.
- 5 out of 5 starsReviewed on 5/17/2023
He not only is a very competent doctor but he has personality & listens to your concerns.
- 5 out of 5 starsReviewed on 4/24/2023
Always kind, professional, and takes the time to educate.
- 5 out of 5 starsReviewed on 4/13/2023
Dr. Twelker was fantastic! He took the time to explain my condition to me along with options and suggestions. He is an incredible doctor!
- 5 out of 5 starsReviewed on 4/13/2023
He addresses my concerns very calmly and is thorough.
- 5 out of 5 starsReviewed on 4/11/2023
Great medical service.
- 5 out of 5 starsReviewed on 3/30/2023
Competent. Great communication skills. Caring.
- 5 out of 5 starsReviewed on 3/20/2023
Dr. Twelker is very detailed with his exams. Gives his undivided attention to our concerns in a comfortable atmosphere.
- 5 out of 5 starsReviewed on 3/2/2023
I got the care I needed and he remembered things from our previous meeting that would not be in the chart.
- 5 out of 5 starsReviewed on 2/6/2023
Caring provider.
- 5 out of 5 starsReviewed on 7/28/2022
Kathryn in scheduling and Dr Twelker in opthamology were both outstanding
- 5 out of 5 starsReviewed on 3/17/2022
Parking is close, there is a center to purchase your lenses, and Dr.Twelker is super pleasant.
- 5 out of 5 starsReviewed on 9/24/2021
Dr. Twelker is professional and very capable. I would highly recommend him.
- 5 out of 5 starsReviewed on 9/19/2021
I would recommend Dr. Twelker for an optometrist.
- 5 out of 5 starsReviewed on 9/5/2021
Very comfortable with Dr Twelker
- 5 out of 5 starsReviewed on 9/2/2021
Dr. Twelker was very competent and professional. His staff performed their jobs well. I felt well taken care of.
- 5 out of 5 starsReviewed on 8/8/2021
Dr. Twelker was pleasant, informative, and very helpful regarding my questions.
- 5 out of 5 starsReviewed on 8/2/2021
Knowledge, expertise, and focus from Dr. Twelker who is also kind and caring. He provides information in a clear, precise format that is easy to understand. The support staff are also bright, caring, and attentive.
- 5 out of 5 starsReviewed on 7/31/2021
Dr. Twelker is an excellent optometrist as well as thoughtful and patient in manner. I would recommend him.
- 5 out of 5 starsReviewed on 7/17/2021
Appointment was on time. All of the staff was pleasant and professional. Dr. Twelker was professional and explained his recommendations completely.
- 5 out of 5 starsReviewed on 6/25/2021
Dr. Twelker was great. He took the time to explain my eye health to me and make a recommendation of next steps.
- 5 out of 5 starsReviewed on 4/15/2021
The staff was polite and Dr Twelker is very knowledgeable.
- 5 out of 5 starsReviewed on 1/25/2021
All personnel very professional. Called back to the room on time. Everyone introduced themselves. Dr. Twelker very thorough in his exam. Answered all questions.
- 5 out of 5 starsReviewed on 9/15/2020
Dr. Welker is amazing with kids. Very friendly staff and was comfortable and felt safe during our visit.
- 5 out of 5 starsReviewed on 7/22/2020
Dr. Twelker is great!
- 5 out of 5 starsReviewed on 10/22/2025
Easy to communicate with, felt he cared, listened to me.
- 5 out of 5 starsReviewed on 12/19/2024
He knows what he's doing.
- 5 out of 5 starsReviewed on 9/11/2021
Dr. Twelker is friendly and very informative.
Similar Providers
Banner - University Medicine Ophthalmology Clinic
707 North Alvernon Way, Suite 301, Tucson, AZ 85711
Banner - University Medicine Ophthalmology Clinic
707 North Alvernon Way, Suite 301, Tucson, AZ 85711

