Mark Landis, MSN, RN, FNP has been a practicing Registered Nurse since 1997. He achieved his Masters of Science in Nursing and became a Board Certified Family Nurse Practitioner in 2005. He has extensive experience in Cardiology and has trained under Dr. Teixido to become a Migraine Specialist, and with our other physicians to become a support provider for general ears, nose, and throat disorders.
Mark Landis, MSN, RN, FNP has been a practicing Registered Nurse since 1997. He achieved his Masters of Science in Nursing and became a Board Certified Family Nurse Practitioner in 2005. He has extensive experience in Cardiology and has trained under Dr. Teixido to become a Migraine Specialist, and with our other physicians to become a support provider for general ears, nose, and throat disorders.
The reviews listed below were collected independently of ENT & Allergy of Delaware through rater8. Each review represents an authentic and verified patient experience.
He’s excellent at explaining things to you. He took the time to go over my medication and re-prescribe a better medication for my health issue. One that would work better for me to help with migraine and will not interfere with my lungs our heart condition.
(3 days ago)
Jun-2026
Helped me a lot with ear issue
(1 week ago)
Jun-2026
Very professional and easy to talk to and very thorough
(1 week ago)
Jun-2026
Mark is a thorough provider with open and clear communication. He and his team are responsive, kind, and professional in all interaction. He has helped me immensely and I highly recommend him if you need migraine assessment and management. Thank you Mark!
(1 week ago)
Jun-2026
Dr Mark is amazing! Friendly, detailed and provides realistic suggestions to improve the quality of my life
(2 weeks ago)
Jun-2026
Very good doctor
(2 weeks ago)
Jun-2026
He's patient, experienced and positive.
(2 weeks ago)
Jun-2026
All ways cordial and answers any questions I may have.
(2 weeks ago)
Jun-2026
Mark is very knowledgeable and encouraging, always willing to lend an ear with problems and concerns…
(2 weeks ago)
Jun-2026
Mark is exceptional when it comes to migraine treatment. I have been treated with Botox for over 20 years and his application is the most effective of all my doctors. I highly recommend him!
Mark Landis, MSN, RN, FNP has been a practicing Registered Nurse since 1997. He achieved his Masters of Science in Nursing and became a Board Certified Family Nurse Practitioner in 2005. He has extensive experience in Cardiology and has trained under Dr. Teixido to become a Migraine Specialist, and with our other physicians to become a support provider for general ears, nose, and throat disorders. He graduated with a Bachelor’s of Science in Nursing from Widener University in 1997 and went on to practice as a Registered Nurse in several clinical settings at Christiana Care Health Systems and eventually with Delaware Cardiovascular Associates. He has privileges at Christiana Care Health Systems and is a preceptor to Nurse Practitioner and Physician Assistant students. He is also a member of the American Headache Society and annually attends migraine conferences to best support his patients.
He’s excellent at explaining things to you. He took the time to go over my medication and re-prescribe a better medication for my health issue. One that would work better for me to help with migraine and will not interfere with my lungs our heart condition.
Helped me a lot with ear issue
Very professional and easy to talk to and very thorough
Mark is a thorough provider with open and clear communication. He and his team are responsive, kind, and professional in all interaction. He has helped me immensely and I highly recommend him if you need migraine assessment and management. Thank you Mark!
Dr Mark is amazing! Friendly, detailed and provides realistic suggestions to improve the quality of my life
Very good doctor
He's patient, experienced and positive.
All ways cordial and answers any questions I may have.
Mark is very knowledgeable and encouraging, always willing to lend an ear with problems and concerns…
Mark is exceptional when it comes to migraine treatment. I have been treated with Botox for over 20 years and his application is the most effective of all my doctors. I highly recommend him!