Alfred Koos

Alfred Koos, PA-C, MSPAS

Physician Assistant

Alfred (“Al”) Koos, PA-C, is a certified physician assistant at Oasis ENT in Surprise, Arizona. He is now proud to bring his skills into otolaryngology and ENT surgery, supporting patients across the Phoenix Valley.

Al earned his Bachelor of Science in Education from Hofstra University, followed by a Master’s in Exercise Physiology from Arizona State University. He then completed his Master of Physician Assistant Studies at A.T. Still University in 2015.

Over the past nine years, he has practiced as a physician assistant in neurosurgery, orthopedic surgery, pain management, and urgent care. He also holds advanced certifications in strength and conditioning and corrective exercise, which complement his medical and surgical training.

Al takes a patient-first approach to otolaryngology and ENT surgery, drawing on his broad surgical experience and training in exercise physiology to support recovery and long-term health. He values collaboration with physicians and patients, and when possible, emphasizes minimally invasive treatments that help patients return to daily life with greater comfort and confidence.

As part of the Oasis ENT team in Surprise, Arizona, Al supports the evaluation and treatment of a wide range of ear, nose, and throat conditions, including:

• Allergy testing and treatment (injections and sublingual drops)
• Ear conditions such as infections, hearing concerns, and balance issues
• Nasal and sinus conditions (rhinology)
• Voice and throat disorders
• Obstructive sleep apnea and snoring
• Medical support and follow-up care for sinus and nasal procedures, including balloon sinuplasty and rhinoplasty, in coordination with Oasis ENT surgeons

Outside of the clinic, Al enjoys weight training, hiking, cooking, and traveling. He also enjoys quality time with his wife, Maritza, and their two daughters, Chloe and Ava.