About Us

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(520) 626-0962 (520) 694-8888

Petersen Clinics is part of the Department of Medicine’s division of Infectious Diseases and collaborates with Banner Health Network to provide clinical care for people with or at risk for HIV. Our program was ranked 3rd in the nation out of 142 academic hospitals for excellence in care.  Our program provides outpatient and inpatient care at an afforadable price for all HIV-infected adults, plus testing, education and couseling services to patients and their families. 

The Petersen Clinics use a multi-disciplinary team approach to provide patients with comprehensive HIV specialty care. Our team is comprised of Infectious Disease specialists, pharmacists specializing in HIV medicine and highly experienced health professionals serving as clinical coordinators, medical case managers, and early interventionists.

Meet our Team


PrEP Management

Desiree Golden, NP

Clinical Pharmacists

Connie Chan, PharmD, BCPS
Alexander Cyganowski, PharmD, BCPS, BCIDP, AAHIVP
Kristen Ellis, PharmD, BCPS
Lawrence York, PharmD, BCPS, AAHIVP

Early Interventionists

Patricia Durazo, BA
Krystal Fimbres
Anahí Morgan, BA,BS

Medical Case Managers

Michael Castaneda
Itzayana Duron, BS
Sheila M. Flores, MPH 
Kerry M. Murphy, BA

Clinical Coordinators

Sascha Bianchi
Alyssa K. Campbell, BA
Sharon Halvorsen, MSW
Shivangi J. Jariwala, BA
Melissa R. Pettorsson, CPhT


Alyssa Guido, MPH
Andrea Verdin, LMSW
Joanne Wolf

Data Management

Sarah H. Yates, BA

Use these links to learn more about Department of Medicine's Division of Infectious Disease and Pediatric Infectious Disease or about the Banner Infectious Diseases Department