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About us

Pulmonary Medicine involves the study, diagnosis and treatment of the lungs and respiratory system, their function and roles in health and wellness.  Common complaints we see involve shortness of breath, cough, asthma, copd, abnormal lung testing, lung cancer, and other diseases of the chest and it’s anatomy. We do lung function, exercise, and oxygen testing in the office.  We manage the medical treatment of a wide variety of pulmonary problems.


John Flesher


Dr Flesher was born in Topeka and raised in Wichita.  He graduated from Wichita State University in 1993, and then graduated from the University of Kansas School of Medicine in 1998.  He completed residency in Internal Medicine, then Fellowships in Pulmonary and Critical Care Medicine.  He started practicing pulmonary and critical care medicine in 2004.

Erica Schumacher


She was born and raised in Wichita, Ks and attended Newman University where she received her Bachelors of Science in Nursing in 2004. She practiced as an RN at Via Christi where she worked on the Ortho/Neuro floor and eventually in the Cardiothoracic ICU. While working as a RN she attended Wichita State University and received her Masters of Nursing in Acute Care in 2011. Since becoming a Nurse Practitioner she has worked in the Acute Care and Pulmonary settings. She has three kids and during her off time she enjoys watching her kids play sports and spending time with Family.