Our Faculty2020-08-27T15:41:41+00:00

 

Our Faculty

PROGRAM DIRECTOR

James McMillan, MD

James McMillan, MD earned his medical degree at Loma Linda University where he also completed his Internal Medicine Residency, staying on as chief medical resident at the Jerry L. Pettis Memorial VA Hospital. Subsequently he completed his Nephrology Fellowship at the University of California, San Francisco. He served as chief of nephrology at the Loma Linda VA from 2003 to 2016. He is now the Nephrology Fellowship Program Director for Loma Linda University and is an associate professor of medicine. His interests include prevention of progression of chronic kidney disease, fluids and electrolytes, and lifestyle influences on kidney disease. He enjoys inviting trainees home for a meal of homegrown fruits and vegetables.

Our Nephrology Division at Loma Linda University Medical Center

Amir Abdipour, MD is a graduate of Shahid Beheshti Medical University from Iran. He completed his Internal Medicine Residency and Nephrology Fellowship at Loma Linda University. He is currently Chief of Nephrology Division and Medical Director of Therapeutic Apheresis Services at Loma Linda University Medical Center. His clinical interests include Acute Kidney Injury, ICU Nephrology, CRRT, Kidney stones, and Apheresis Modalities. He is fluent in English and Farsi. He is an Assistant Professor of Medicine at Loma Linda University.

Amir Abdi Pour, MD, Division Head

Sergio Infante, MD is a graduate of El Bosque University, School of Medicine and has a Diplomate in Business Administration from the Pontifical Javeriana University in Bogotá, Colombia. His training in Internal Medicine was at Fundación Santa Fé de Bogotá, Colombia and Charles Drew University, Los Angeles, CA where he was named Chief Resident. He subsequently completed his Nephrology Fellowship at the University of California, Davis. He also completed an Educational Leadership Fellowship at the University of Southern California. His clinical interests include Critical Care Medicine, Renal Replacement Therapies and Underserved Community Healthcare. Dr. Infante is the recipient of Volunteerism and Community Service Award by the ACP in 2015. He is currently the Medical Director for Dialysis Services at LLU Medical Center and LLU Kidney Center and the Associate Program Director for the Nephrology Fellowship at Loma Linda University and serves as the chair of the Program Evaluation Committee. His research interest includes Kidney Transplant in Hispanic population and drug dosing in patients undergoing dialysis. He is an Assistant Professor of Medicine at LLU and UC Riverside. He enjoys teaching, cooking, high altitude hiking, and traveling.

Sergio  Infante, MD

Associate Program Director & Director of Dialysis Services

Siegmund Teichman, MD received his Medical Degree from Loma Linda University School of Medicine and also completed his Internal Medicine Residency at Loma Linda University. Dr. Teichman subsequently completed a Fellowship in Nephrology at Walter Reed General Hospital. He has key interests in transplantation and dialysis. He is a Professor of Medicine at Loma Linda University.

Siegmund Teichman, MD

Gulnara Rackauskas, MD received her Medical Degree from Kaunas University of Medicine, Kaunas, Lithuania. She completed her Internal Medicine Residency at Loma Linda University Medical Center and also completed her Nephrology Fellowship at Loma Linda Medical Center.  Dr. Rackauskas is fluent in English, Russian and Lithuanian. She is an Assistant Professor of Medicine at Loma Linda University.

Gulnara Rackauskas, MD

Alfred Cottrell, Jr. MD is a graduate of Drexel University School of Medicine. He completed his Internal Medicine Residency at The Naval Hospital, San Diego and Fellowship at UC San Diego Affiliated Hospitals. His medical specialty is Nephrology. His clinical interests include Chronic Kidney Disease and Dialysis. Dr. Cottrell is chair of the fellowship Clinical Competency Committee. He is an Assistant Professor of Medicine at Loma Linda University.

Alfred Cottrell Jr., MD

Matthew Kaptein, MD earned his medical degree from the Keck School of Medicine of USC. He completed Internal Medicine Residency and Nephrology Fellowship at Los Angeles County + USC Medical Center. He is an Assistant Professor of Medicine at LLU. His clinical and research interests include critical care medicine, assessment of intravascular volume, bedside ultrasound, and management of disorders of sodium and water balance.

Matthew Kaptein, MD

Mohammad Sharif, M.D. is a graduate of Jordan University of Science and Technology. He completed his Internal Medicine Residency at Hurley Medical Center, Michigan State University where he was a chief resident. He subsequently completed his Nephrology Fellowship at Loma Linda University Medical Center. His clinical interests include acute kidney injury and dialysis. He is an assistant professor of Medicine at Loma Linda University.

Mohammad Sharif, M.D.

Melin Narayan, MD received his Medical Degree from Kasturba Medical College, Manipal, India. He completed his Internal Medicine Residency at Prince George's Hospital Center in Cheverly, Maryland. He subsequently completed his Nephrology Fellowship at the Saint Louis University, St. Louis, Missouri. His clinical interests include prevention of chronic kidney disease and dialysis. He is an Assistant Professor of Medicine at Loma Linda University. He enjoys reading, listening to music, and spending time with his family.

Melin Narayan, M.D. 

Jonelle Myren is a Nurse Practitioner in Division of Nephrology, Loma Linda. She received her graduate training at Wayne State University College of Nursing.

Jonelle Myren, N.P.

Our Transplant Nephrology Division at Loma Linda University Medical Center

Rafael Villicana MD is a Transplant Nephrologist who earned his medical degree from Michigan State University. He completed his Internal Medicine Residency at Mayo Clinic Rochester. He subsequently completed Nephrology and Transplant Nephrology Fellowships from UCSF. He then spent nearly a decade on staff at Cedars Sinai Medical Center. His interests include kidney and pancreas transplantation, living kidney donation and ABO /HLA incompatible kidney transplantation. He is fluent in Spanish. He is an associate professor of Medicine at Loma Linda University.

Rafael Villicana, MD

Thanh Xuan Hoang, MD is a graduate of St. George University School of Medicine. His Internal Medicine Residency was at Drexel University School of Medicine where he also did his Nephrology Fellowship and Transplant Fellowship. His key interest is in transplantation. He speaks English and Vietnamese. He is an Assistant Professor of Medicine at Loma Linda University.

Thanh Xuan Hoang, M.D.

Rungwasee Rattanavich, M.D. is a Transplant Nephrologist and an Assistant Professor of Medicine at Loma Linda University. She is a graduate Faculty of Medicine, Prince of Songkla University in Thailand. She completed her Internal Medicine Residency at Framingham Union Hospital, and Nephrology fellowship at Barnes-Jewish Hospital. She subsequently completed a Nephrology Transplant Fellowship at University of Wisconsin Hospital and Clinics.

Rungwasee Rattanavich, M.D.

Our Nephrology Division at the VA Loma Linda Healthcare System

Enrica Fung, MD, MPH is the Chief of Nephrology Section at Loma Linda VA Healthcare System and Associate Program Director for research. She graduated from the University of California Berkeley and University of California Davis School of Medicine. She also holds a MPH degree in Epidemiology from the UC Berkeley School of Public Health. She completed her internship, residency, and chief residency in Internal Medicine at Santa Clara Valley Medical Center, affiliated with Stanford University School of Medicine. She completed Nephrology Fellowship at Stanford University where she was also a Clinical Instructor of Medicine. Since appointed as Chief of Nephrology in 2018, she has increased telemedicine capability in the nephrology section and collaborated with the dialysis director on expansion of home dialysis services as well as continuous renal replacement therapy. In addition to clinical care, she is passionate about teaching and medical education. Her research interests include healthcare delivery and longitudinal chronic kidney disease care.  Her long term projects include improvement of early chronic kidney disease management, blood pressure management and referral process at the VA. Outside of work, she enjoys yoga and hiking.

Enrica Fung, MD, MPH,

Section Chief

Dr. Jaipaul is the Chief of Medicine at VA Loma Linda Healthcare System. He is Professor of Medicine at Loma Linda University School of Medicine. He is a graduate of Cornell University and the University of Iowa College of Medicine. He completed his internship and residency in Internal Medicine at the University of Virginia, followed by a clinical and research fellowship in Nephrology at Johns Hopkins Hospital. During his fellowship, he was the recipient of a NIH T32 training grant in Clinical Epidemiology from the Johns Hopkins Bloomberg School of Public Health. He has been a mentor to students, residents, and fellows interested in chronic kidney disease clinical outcomes research. He has also been recognized for developing one of the most successful kidney transplant programs in the VA.

Navin Jaipaul, MD, MHS

Chief of Medicine 

James McMillan, MD earned his medical degree at Loma Linda University where he also completed his Internal Medicine Residency, staying on as chief medical resident at the Jerry L. Pettis Memorial VA Hospital. Subsequently he completed his Nephrology Fellowship at the University of California, San Francisco. He served as chief of nephrology at the Loma Linda VA from 2003 to 2016. He is now the Nephrology Fellowship Program Director for Loma Linda University and is an associate professor of medicine. His interests include prevention of progression of chronic kidney disease, fluids and electrolytes, and lifestyle influences on kidney disease. He enjoys inviting trainees home for a meal of homegrown fruits and vegetables.

James McMillan, MD, Program Director

Seyed-Ali Sadjadi, MD, graduated from the University of Tehran School of Medicine in 1972; completed an Internal Medicine Residency and a Nephrology Fellowship at Mount Sinai School of Medicine affiliated hospitals in New York City, and a transplant medicine fellowship at the University of Wisconsin Hospital and Clinics in 1993. His main areas of interest are dialysis, fluid and electrolytes. He is an Associate Professor of Medicine at Loma Linda University School of Medicine and previously served as director of the dialysis unit at Jerry L. Pettis Memorial Veterans Medical Center.

Seyed-Ale Sadjadi, M.D.

Robert E. Soderblom, MD, FACP is a graduate of LLU School of Medicine. He took his residency in Internal Medicine at LLUMC and subsequently took his Nephrology Fellowship at Parkland Hospital, University of Texas, Southwestern in Dallas, Texas, mentored by Dr. Donald Seldin. From 1979 to 1992 he was Chief of Nephrology and Director of dialysis services at LLUMC. He was the nephrology fellowship Program Director from 2008 through 2016. He is an Associate Professor of Medicine at LLU and is based at the VA Loma Linda Healthcare System. His main interest is in clinical nephrology and teaching students, residents, and fellows.

Robert E. Soderblom, M.D.

Zhiwei Zhang, MD is an associate professor of Medicine and Basic Sciences at Loma Linda University and staff nephrologist at the VA Loma Linda Healthcare System. After earning his medical degree from Sun Yat-Sen University of Medical Sciences in China, he completed his Internal Medicine residency training in China as well as in the United States, followed by a combined clinical and research fellowship in Nephrology at Massachusetts General Hospital and Brigham & Women’s Hospital. He has been on staff at Harvard University and St. Louis University prior to current position. His research interests are focused on the mechanism of renal epithelial cell injury and repair as well as tumorigenesis of renal cell carcinoma (RCC). Clinically he is interested in the diagnosis and management of acute kidney injury and hepatorenal syndrome (HRS). He had received the Joseph E. Murray Award from National Kidney Foundation of MA/RI/NH/VT, and an individual National Research Service Award from NIH/NIDDK. His work has been published in high impact peer-reviewed journals, including Journal of Biological Chemistry, Journal of American Society of Nephrology, and Kidney International.

Zhiwei Zhang, MD

Annie Hong, MD is a staff nephrologist at the VA Loma Linda Healthcare System and an assistant professor of Medicine at Loma Linda University. She is a graduate of Loma Linda University School of Medicine. She completed her Internal Medicine Residency at Cedars Sinai Medical Center in Los Angeles and Nephrology fellowship at University of California, San Diego. Her clinical interests include home dialysis therapies, patient-centered CKD education, and disorders of fluids/electrolytes. She speaks English and Vietnamese.

Annie Hong, M.D.

Mansoor Azim, MD is a staff nephrologist and director of the dialysis unit at Jerry L. Pettis Memorial Veterans Medical Center. After graduating from David Geffen School of Medicine at University of California, Los Angeles, he completed his Internal Medicine Residency and Nephrology Fellowship at Cedar Sinai Medical Center in Los Angeles. His clinical interests include chronic kidney disease, renal replacement therapies, and kidney transplant. He is fluent in English and Urdu/Hindi. He is an assistant professor of Medicine at Loma Linda University.

Mansoor Azim, M.D.

Susan Hall, MD, PhD, MPH serves as Research Advisor in the Nephrology Fellowship Program. She completed undergraduate work at the University of Michigan, and subsequently entered the NIH-funded Medical Scientist Training Program, earning a PhD in Biochemistry and MD degree at Loma Linda University. She completed her residency in Preventive Medicine at Loma Linda University with a focus on research study design, earning an MPH degree in Biostatistics and Epidemiology. She is an expert in the field of bone biology and osteoporosis research focusing on the development of bone marrow transplantation and gene therapy strategies to safely and effectively deliver bone-forming treatments directly to bone. She is an Associate Professor in the Departments of Medicine and Basic Sciences, and an Assistant Professor in the Department of Biostatistics and Epidemiology at Loma Linda University. She previously served as Chair of the Institutional Review Board for the ethical conduct of human research at the Jerry L. Pettis VA Medical Center, and continues to provides mentorship to the Internal Medicine Residency Program in the design and implementation of Patient Safety and Quality Improvement projects

Susan Hall, MD, PhD, MPH

Internal Medicine Department Leadership

Department Chair

Douglas Hegstad, MD, MACP

Department Chair since 2009, Dr Hegstad embraces the trust our trainees place in us and the obligation and joy for faculty members to “pay forward” their own opportunities. He has overseen renewal and growth of the faculty, more than doubling the faculty employment at the University.

A graduate of the Loma Linda University School of Medicine, Dr. Hegstad did his Internal Medicine Residency training at Loma Linda University and served as Chief Medical Resident at its Riverside General Hospital (now Riverside University Medical Center) affiliate. For nearly a decade, he served as Chair of its Department of Medicine.

He has served as Governor of the Southern California Region II Chapter of the American College of Physicians and President of the American College of Physicians California Chapters. For more than a decade, he was a member of the College Health and Public Policy Committee. He served as Public Relations spokesman for the College, doing radio and television appearances. In 2011, he was awarded Mastership in the American College of Physicians.

He has had a long-standing engagement in education. He has served as the Department of Medicine Student Education Director and has been recipient of the University’s “Teacher of the Year Award.”

He and his wife Alane live in Loma Linda. In off hours, you will find Dr. Hegstad riding his mountain bike, trapping gophers, or doing home-improvement projects.

Education Vice Chair

Lawrence Loo, MD

Dr. Loo received his M.D. degree from the University of California, San Diego (UCSD) and subsequently completed his Internal Medicine Residency and Chief Resident year at Loma Linda University and affiliated hospitals.  This was followed by a postdoctoral fellowship in Primary Care and Faculty Development from Michigan State University. He is currently board certified by the American Board of Internal Medicine and a Master in the American College of Physicians.  He maintains staff privileges at all three of the major hospital affiliates of the IM residency program including Loma Linda University Medical Center (LLUMC), Loma Linda VA Healthcare System (LLVAH), and Riverside University Health System (RUHS).  He currently serves as the Vice-Chair for Education and Faculty Development within the Department of Medicine, helping to coordinate the continuum of professional development from medical student education, graduate medical training including the IM residency and fellowships, and continuing medical education. He currently is Professor of Medicine in the both the Departments of Medicine and Medical Education.  Dr. Loo’s professional career has been as a clinician-educator and his current scholarly activities have focused on the teaching and evaluation of Evidence-based Medicine, Professionalism, and Professional Identity Formation.  He immensely enjoys working with students, residents, fellows, and faculty who wish to pursue an academic career in medical education.

Vice Chair of Research

Bryant Nguyen, MD

Dr. Nguyen is Vice-Chair of Research and Professor of Medicine, Emergency Medicine and Basic Sciences. He is also Head of the Division of Pulmonary and Critical Care Medicine, as well as Director for the Medical Intensive Care Unit.  He received M.D. degree from the University of California, Irvine. He completed his residency in Internal Medicine and Emergency Medicine at Henry Ford Hospital in Detroit, MI, and went on to complete a fellowship in Critical Care Medicine at Loma Linda University.

Dr. Nguyen joined the faculty of Loma Linda University in 2003.   His research includes multi-disciplinary critical care delivery, early intervention and novel therapies in severe sepsis, lactate clearance and biomarkers discovery. Having co-authored Early Goal-Directed Therapy (EGDT), Nguyen led LLUMC as one of the earliest adopters of the sepsis resuscitation bundle. His list of over 100 publications and dedication to bridging the gap between research and clinical practice has taken him across the country and around the globe. More recently, Dr. Nguyen has developed special interest in clinical informatics and partners with Information Services at LLUMC to develop predictive analytics in order to better patient care and increase research productivity in the Department.

OUR
LEADERS

are committed to LLUMC's Mission of Whole Person Care, we take a holistic approach to our residents training them to be well-rounded, compassionate and caring physicians.