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Meet The Faculty

Group photo of Infectious Diseases faculty at Mayo Clinic in Arizona

The Division of Infectious Diseases at Mayo Clinic's campus in Arizona is staffed by specialists dedicated to patient care, research, and education in their daily practices.

From the program director

Sandhya Nagarakanti, M.B.B.S., M.D.Mayo Clinic training programs foster a diverse and inclusive culture of lifelong learning, create a conducive environment to deliver outstanding patient care in multidisciplinary teams, and provide unparalleled opportunities for research and education.

Mayo Clinic School of Graduate Medical Education (MCSGME) is home to more than 270 individual training programs that cover every medical and surgical specialty across the three Mayo Clinic campuses. MCSGME oversees the largest number of ACGME-accredited programs in the United States. Learn more about why residents and fellows choose Mayo Clinic.

Mayo Clinic's Arizona campus was established in 1987. Since our inception, we have grown into a tertiary care institution with more than 500 physicians, along with more than 220 residents and fellows.

Our fellowship has been designed to provide an exceptional learning experience in all aspects of clinical infectious diseases. Our faculty members have years of experience training students, residents, and fellows. Several are world-renowned for their research and expertise and have many active and ongoing clinical trials. You have the opportunity to participate in the three-site case conferences in which faculty and fellows from the three Mayo Clinic campuses present and discuss challenging cases. Weekly infectious diseases core curriculum lectures are delivered by renowned faculty from all three Mayo Clinic sites.

Other valuable offsite rotations include an HIV continuity clinic at Valleywise Healthcare Center, pediatric infectious diseases at Phoenix Children's Hospital, and Maricopa County sexually transmitted infections and TB clinics. You have access to patient medical records across Mayo Clinic's campuses to facilitate coordinated patient care and collaborative clinical research. Opportunities for elective rotations and ample time for research will result in a well-rounded educational experience.

At the end of your fellowship, I'm confident that you will be fully equipped to pursue your chosen career path in infectious diseases. We look forward to hearing from you soon.

Sandhya R. Nagarakanti, M.B.B.S., M.D.
Infectious Diseases Fellowship Program Director

From the associate program director

Christopher Saling, M.D.The Infectious Diseases Fellowship program at Mayo Clinic in Phoenix, Arizona, is a true embodiment of Mayo Clinic's three shields: clinical practice, research, and education.

During the fellowship, you're exposed to a rich array of infectious disease pathology by caring for patients that come from all over the world. Furthermore, as a leading transplant center, our program offers a robust experience into transplant infectious diseases.

Through committed mentorship, our expert faculty cultivate an environment of collaboration, teaching, and innovation to help you reach your fullest potential as an infectious disease specialist.

Upon graduation, you will be fully prepared to make a lasting impact on the field of infectious diseases and patients as they embark on their careers.

We thank you for your interest in our program and we look forward to hearing from you soon.

Christopher Saling, M.D.
Infectious Diseases Fellowship Associate Program Director

Faculty

Our faculty members have extensive experience in training medical students, residents, and fellows. They have been actively involved in clinical research in diverse areas of infectious diseases, resulting in numerous seminal publications over the years. Residents, students, and fellows have vastly benefited from ongoing research collaborations, publications, and mentorship by our faculty. 

The division also includes an infectious diseases (ID) pharmacist, two nurse practitioners, and two nurses.

  • Antimicrobial Stewardship Program. The Mayo Clinic campus in Phoenix, Arizona, has a robust ASP that is accomplished in conjunction with ID faculty and two ID pharmacists. You have the opportunity to assist, enforce, and participate in research and quality improvement endeavors.
  • Mayo Clinic Outpatient Parenteral Antimicrobial Therapy (MOPAT) program. Mark Burns, C.N.P., D.N.P., N.P., M.S., and Amy Kole, P.A.-C., are primarily responsible for our award-winning MOPAT Program, which has been a key component of our practice for careful monitoring and follow-up of patients on parenteral antimicrobial therapy. As a fellow, you play a key role in this process for their inpatient consultations when discharged on such antimicrobials.
Holenarasipur (Vik) R. Vikram, M.D.

Holenarasipur Vikram, M.D.

Medical Director, Transplant Infectious Diseases & Professor of Medicine in the Division of Infectious Diseases

Medical school: Bangalore Medical College, Bangalore University
Residency: 
University of Connecticut Health Center
Fellowship: Yale University School of Medicine

Dr. Vikram’s PubMed Citations

Robert Orenstein, D.O., FIDSA, FACP, AAHIVS

Robert Orenstein, D.O.

Chair, Division of Infectious Diseases
Professor of Medicine in the Division of Infectious Diseases

Medical School: College of Osteopathic Medicine, Des Moines University
Residency: Geisinger Medical Center
Fellowship: Medical College of Virginia, Virginia Commonwealth University

Dr. Orenstein's PubMed citations

Janis Blair, M.D.

Janis Blair, M.D.

Professor of Medicine in the Division of Infectious Diseases

Medical school: University of Southern California School of Medicine
Residency: Harbor-UCLA Medical Center
Fellowship: Mayo Clinic School of Graduate Medical Education

Dr. Blair's PubMed citations

Erin Graf, Ph.D.

Erin Graf, Ph.D.

Co-Director, Microbiology Laboratory

Medical school: University of Maryland, BS, Cell Biology and Molecular Genetics
Residency: University of Pennsylvania, Ph.D., Cell and Molecular Biology
Fellowship: University of Utah School of Medicine, Fellow, CPEP Clinical Microbiology

Dr. Graf's PubMed citations

Thomas Grys, Ph.D.

Thomas Grys, Ph.D.

Director, Arizona Microbiome Program
Co-Director of Microbiology
Associate Professor of Laboratory Medicine And Pathology

Medical school: Gustavus Adolphus College, BA, Biochemistry and Chemistry
Residency: University of Wisconsin-Madison, Ph.D., Microbiology
Fellowship: Mayo Clinic School of Graduate Medical Education, Fellow, CPEP Clinical Microbiology

Dr. Grys' PubMed citations

Sandhya Nagarakanti, M.B.B.S., M.D.

Sandhya Nagarakanti, M.B.B.S., M.D.

Program Director
Assistant Professor of Medicine

Medical school: Osmania Medical College
Residency: Mount Sinai Services
Fellowship: Newark Beth Israel Medical Center

Dr. Nagarakanti's PubMed Citations

Christopher Saling, M.D.

Christopher Saling, M.D.

Associate Program Director
Assistant Professor of Medicine

Medical school: Saint Vincent and Grenadines - Trinity School of Medicine
Residency: Saint Michael's Medical Center
Fellowship: Mayo Clinic School of Graduate Medical Education 

Dr. Saling's PubMed citations

Teresa Seville, M.D.

Teresa Seville, M.D.

Chair, Antimicrobial Stewardship Program
Associate Professor of Medicine

Medical school: College of Medicine, University of the Philippines
Residency:
 Saint Francis Hospital of Evanston, Loyola University & Stritch School of Medicine
Fellowship: Loyola University Medical Center

Dr. Seville's PubMed citations

Jamilah Shubeilat, M.B.B.S., M.D.

Jamilah Shubeilat, M.B.B.S., M.D.

Senior Associate Consultant & Co-Vice Chair for Infection Prevention & Control

Medical school: University of Jordan Medical School
Residency: University of Arizona
Fellowship: University of Massachusetts

Dr. Shubeilat's PubMed citations

Lisa Speiser, D.O.

Lisa Speiser, D.O.

Chair, Infection Prevention and Control Subcommittee
Assistant Professor of Medicine
Consultant of the Division of Infectious Diseases

Medical school: Arizona College of Osteopathic Medicine, Midwestern University
Residency: Banner University Medical Center, University of Arizona College of Medicine
Fellowship: University of California-Irvine

Dr. Speiser’s PubMed Citations

Meet more faculty

Pharmacy

Daniel Ilges, Pharm.D.

Daniel Ilges, Pharm.D., R.Ph., BCIDP

Assistant Professor of Pharmacy in the Division of Infectious Diseases
Infection Prevention and Control Subcommittee

Medical school: University of Health Sciences & Pharmacy in St. Louis, MO
Residency: SSM Health St. Louis University Hospital & Barnes-Jewish Hospital

Ahmed Zikri, Pharm.D.

Ahmed Zikri, Pharm.D., R.Ph., BCIDP

Clinical Specialist of Pharmacy in the Division of Infectious Diseases
Infection Prevention and Control Subcommittee

Medical school: University of Minnesota College of Pharmacy
Residency: Legacy Health in Portland, OR

Microbiology

Andrew Bryan, M.D.

Andrew Bryan, M.D., Ph.D.

Senior Associate Consultant & Associate Director of Clinical Microbiology

Medical school: University of Washington & University of Michigan Medical School

External faculty

Ann Khalsa, M.D., M.S., MSEd, AAHIVS

Valleywise Community Heath Center, HIV/AIDS Clinic

Medical school: Keck School of Medicine of the University of Southern California
Residency: Arrowhead Regional Medical Center

Renuka Khurana, M.D.

TB/STD Clinic at Maricopa County Department of Public Health Services

Medical school: Maharshi Dayanand University Rohtak/Maharaja Agrasen Institute of Medical Research and Education
Residency:
St Louis University Hospital

Rebecca Sunenshine, M.D.

Infectious Diseases at Maricopa County Department of Public Health

Medical school: Indiana University School of Medicine & Oregon Health Science University/School of Dentistry

Phoenix Children Hospital - Pediatrics Infectious Diseases

Wassim Ballan, M.D.

Division Chief of Infectious Diseases, Medical Director of the Antimicrobial Stewardship. & Associate Director of the Infection Prevention Program

Medical school: American University of Beirut, Lebanon
Residency: SUNY Upstate Medical University
Fellowship: University of California

Scott Ostdiek, M.D.

Medical Director of Infection Prevention Program

Medical school: University of Nebraska College of Medicine
Residency: Phoenix Children's Hospital/Maricopa Medical Center
Fellowship: St. Louis Children's Hospital/Washington University

Matthew Smith, M.D.

Division of Infectious Diseases

Medical school: University of Arkansas of Medical Sciences
Residency: Arkansas Children's Hospital
Fellowship: St.
Jude's Children’s Research Hospital, University of Tennessee Department of Pediatrics, & LeBonheur Children's Medical Center

Advisers and mentors

Faculty advisers are available to provide comprehensive educational advice and personal support. You meet with your adviser periodically throughout the program to review your progress and career goals and ensure that your educational needs are being met. Your adviser may serve as a contact point for introducing you and your family to the Phoenix metropolitan area and the Mayo Clinic system. 

Visiting professors

Many prominent professors visit Mayo Clinic each year. They present their work during lectures, participate in hospital rounds and have informal discussions with trainees. You are encouraged to take full advantage of these educational opportunities.