Choose Location

We provide care in three easily-accessible locations across the Rio Grande Valley.


1604 East 8th St., Suite A
Weslaco, TX
Phone: (956) 447-5557


5300 North McColl Rd., Suite 100
McAllen, TX
Phone: (956) 630-1000


1022 E. Griffin Pkwy.
Mission, TX 78572
Phone: (956) 833-6000

About Us

Juan P. Rey Mendoza, MD

Medical School: Universidad Peruana Cayetano Heredia, Lima, Peru.
Residency: Internal Medicine at John Stroger Hospital of Cook County, Chicago Illinois.
Masters: In Science in Clinical Research at Rush University, Chicago Illinois.
Fellowship: Pulmonary and Critical Care at the University of Wisconsin, Madison Wisconsin.

Dr Rey Mendoza focuses on a personalized, patient – physician partnership with the goal to provide the highest quality of care for the patients seeking pulmonary (lung) care in the Valley. Dr. Rey – Mendoza, is fluent in English and Spanish.

Dr. Rey Mendoza’s is triple board certified in Internal Medicine, Pulmonary Medicine and Critical Care Medicine. His area of interest and expertise consists of: Advanced lung diseases such as interstitial lung disease – pulmonary fibrosis, COPD, pulmonary hypertension, lung nodule, lung cancer screening, lung transplant evaluations, and coordinating referrals to transplant centers across Texas. He also treats patients with asthma, chronic cough, pleural diseases, pulmonary infections such as tuberculosis or fungus, and obstructive sleep apnea (OSA).

Dr. Rey Mendoza offers an array of pulmonary procedures for diagnostic and treatment in the clinic and various hospitals across the Rio Grande Valley. At the hospital bedside, he is skilled in performing point of care ultrasonography (POCUS), in evaluation and multispecialty care of complex patients with multiorgan failure and in using extracorporeal membrane oxygenation (ECMO) for heart or lung failure as a life saving measure in the intensive care unit (ICU).

Dr. Rey Mendoza has published several peer review articles in medical journals of Pulmonary and Critical Care Medicine, and actively teaches residents in Internal Medicine Residency at the University of Texas Rio Grande Valley.

Our Staff

Employing state-of-the-art technology and updated diagnostic and treatment algorithms, our highly trained staff is dedicated
to provide accurate diagnoses and optimally-effective treatments for the full range of pulmonary and sleep disorders.
Their decades of combined expertise and commitment to personalized treatment ensure that each
of our clients receives the care they need to maximize their pulmonary and sleep health.