Come be part of our family!

Forget the cold corporate conglomerate health institutions where you are just a number! Come to Cornerstone Health & Family Practice..."where old time service meets cutting edge medicine."

About Our Office

Located on the outskirts of downtown Tucson, our practice see patients of all ages - newborns to senior citizens. Our goal is personalized medical treatment for all of our patients, and convenient access to healthcare.  We also provide female chaperones and Spanish speaking technicians if needed.  


Why See Us?

Cornerstone Health and Family Practice offers a wide spectrum of medical services, yet still maintains that small town feel. At our practice, we get to know our patients personally, while striving to ensure that they feel confident that our providers are familiar with their medical history and personal needs.



Dr. Platt is a native of Tucson, Arizona, and University of Arizona graduate! As an Osteopathic physician, he has training in the musculoskeletal system and manipulation. He completed a military residency in Family Practice, and then finished his military commitment at Davis-Monthan AFB. Having been a missionary for his church in Ecuador, and later marrying his wife, Leticcia (who is from Brazil!), Dr. Platt is fluent in Spanish and Portugues. He enjoys art, music, spending time with his family, and is an Arizona Wildcat Basketball fanatic.



Ernie Fox, PA-C, is a board certified physician assistant who graduated from the US Air Force Physician Assistant program in 1997. He obtained his Master's degree in PA studies from the University of Nebraska in 1998.  During his military career, he was a decorated officer, with many accolades, including Physician Assistant of the Year for the entire Air Combat Command in 1999. He was stationed at Davis Monthan AFB, where he worked with Dr. Platt for several years. After his miltary retirement, he returned to Tucson to team up again with Dr. Platt. He originally hails from Boston, MA, and met and married his wife Vilina (from Texas, and who also served in the Air Force as a surgical technician).


What is a Physician Assistant (PA)?

Physician assistants (PAs) are health care professionals licensed to practice medicine with physician supervision. As part of their comprehensive responsibilities, PAs conduct physical exams, diagnose and treat illnesses, order and interpret tests, counsel patients on preventive health care, assist in surgery, and write prescriptions. Within the physician-PA relationship, PAs exercise autonomy in medical decision making and provide a broad range of diagnostic and therapeutic services. A PA's practice may also include education, research, and administrative services.

PAs are educated in the medical model designed to complement physician training. Upon graduation, physician assistants take a national certification examination developed by the National Commission on Certification of PAs in conjunction with the National Board of Medical Examiners.

To maintain their national certification, PAs must log 100 hours of continuing medical education every two years and test for recertification every six years. Graduation from an accredited physician assistant program and passage of the national certifying exam are required for state licensure.