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MD Acute
Chart & Stethoscope


MD Acute was established as a multi-specialty practice in Tucson, Arizona to provide not only rapid assessment and treatment for all patients, but to safely and effectively return all to the workforce. We are now happy to offer primary care medicine as well.

Image by Frankie Lopez

Rapid Treatment
When You Need It Most

In many circumstances, a visit to MD Acute can save you time and money compared to the ER. A physician is always available, and we maintain the highest standards for patient care.

Our Team

Dr. David J. Orringer is an urgent care physician in Tucson, Arizona, licensed to practice in Arizona and California. Dr. Orringer grew up in Connecticut, and graduated from Dartmouth College. He completed a masters degree in marine biology in Rhode Island before attending medical school through the United States Air Force. Dr. Orringer trained in surgery before his assignment as Medical Director for Combat Search and Rescue in Tucson. Dr. Orringer completed a Masters of Public Health at the University of North Carolina at Chapel Hill, and has extensive experience in urgent care, preventive medicine and occupational medicine.

Kelly Green, PA-C, PharmD, CDCES is a Certified Physician Assistant in Tucson, Arizona. Kelly is an Arizona native and graduated from The University of Arizona with a Doctor of Pharmacy degree. After practicing pharmacy for over 20 years, she completed a Masters in Medical Science at Yale University. Kelly has extensive medication management experience with special interest in diabetes treatment and prevention. She has other notable experience in sports medicine and toxicology, including workplace exposures.    

Heather L. Kinder, FNP-C, IBCLC is a Lactation Consultant and Nurse Practitioner in Arizona. A Tucson native, she began her nursing career in 1996 after graduating from Northern Arizona University. She gained her experience in a community hospital caring for underserved medical and post operative patients before finding her passion in women’s health and postpartum care. She became Internationally Board Certified as a lactation consultant in 2016 before deciding to further her education and become a family nurse practitioner. 

A dedicated healthcare provider for over 25 years, Heather looks forward to delivering compassionate primary care to patients of all ages and backgrounds. 

David Orringer
Kelly Boesen
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