Physicians educated and trained in Infectious Diseases at the Mayo Clinic and other world-renowned multi-specialty medical centers.

Apex Physicians Infectious Diseases Specialists

APEX is a group of consulting physicians and scientists, educated and trained at Mayo Clinic and other world-renowned, multi-specialty academic medical centers in the United States, that integrates clinical and hospital care with research and education.  They specialize in the diagnosis and treatment of infectious and tropical diseases. Our staff is committed to providing the highest quality of care from the management of simple infections to the treatment of most complex and unusual tropical diseases. We also assist in the management of primary and secondary immunodeficiencies and offer infectious disease screening for individuals undergoing immune-targeted biologic therapy. Apex physicians are available twenty-four hours a day, to provide care for the community. Our priority is to provide comprehensive, confidential, and compassionate care for all our patients.  It is our honor to care for you.  




What is an ID Specialist?

Infectious Diseases Specialists have extensive training and knowledge of how viruses, bacteria, parasites, and fungi affect the body. Much like medical detectives, they investigate difficult cases, parsing through the evidence, looking for clues to identify the culprit and solve the problem. Infectious Diseases Specialists review your medical data, including X-rays and laboratory reports such as blood work, cultures, and pathology data to help determine the cause of the problem. 

Infectious Diseases Specialists typically undergo 9-10 years of specialized education and training: 4 years of medical school, 3 years training as a doctor of internal medicine, and 2-3 years of specialized training in Infectious Diseases. Many common infections can be treated by your personal physician or an internist. In cases where an infection is difficult to diagnose or does not respond to treatment, your doctor might refer you to an Infectious Diseases Specialist.

Neema Mafi MD, AAHIVM
Dr. Kara Ashbury
Ryan W. Penrod MS, PA-C


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Great care begins with seeing your whole picture, understanding all aspects of you and your life.  It requires more than world-class clinical care – it requires care that addresses every aspect of a patient’s encounter with Apex Physicians, including the patient’s physical comfort, as well as their educational, emotional, and spiritual needs. Apex Physicians start by understanding you, your health, and your life to deliver care that’s right for you. From the moment you meet with our specialists or walk through our doors, you will meet minds that cure and hearts that care.


Our patients expect good technical outcomes. We combine and provide resources and data analytics; regarding patient outcomes and medical cost data in meaningful, and actionable ways, ensuring the consistent delivery of improved health services and patient-centered care. In addition, to improve patient experiences, we couple our excellent technical capacity with a team-based and value-based patient-centered culture. 

At the heart of this cultural evolution is effective, compassionate, patient-centered communication. We nurture the communication skills necessary to create respect, empathy, compassion, and an authentic sense of truly caring about the people we are privileged to treat. 

Apex is focused on providing care that is respectful of, and responsive to, individual patient preferences, needs and values, and ensuring that patient values guide all clinical decisions. With our focus on safe care, high-value care, high-quality care, and patient satisfaction, we are honored to provide the care you need and the compassion you deserve. 

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“Passionate about medicine, compassionate about people” 

- Apex Physicians 


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480.454.4185               480.745.2420           7312 E. Deer Valley Rd. Ste. 100 Scottsdale, AZ 85255
Ryan W. Penrod MS, PA-C

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