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.
Very professional and honest. Answer all questions you may have. Will not go to any one else.
(3 days ago)
May-2026
Mark is an excellent and proficient professional, personable and a great guy to chat with as he does his thing.
(1 week ago)
May-2026
I’ve gotten perfect advise and medication from Mr Landis.
(1 week ago)
May-2026
Always excellent care
(1 week ago)
May-2026
Wealth of information provided. Dr Landis was very patient & thorough with explaining information on migraines, symptoms, possible triggers, studies being done, & a treatment plan. I am happy I was referred to him and look forward to feeling better soon.
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.
Very professional and honest. Answer all questions you may have. Will not go to any one else.
Mark is an excellent and proficient professional, personable and a great guy to chat with as he does his thing.
I’ve gotten perfect advise and medication from Mr Landis.
Always excellent care
Wealth of information provided. Dr Landis was very patient & thorough with explaining information on migraines, symptoms, possible triggers, studies being done, & a treatment plan. I am happy I was referred to him and look forward to feeling better soon.
Excellent provider
Mark is awesome
Mark is always professional&answers questions.
Listened to my problem and treated it.
Got in and out quick