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Jeff E. Borenstein, MD, MPH | Watch Video
Internal Medicine
Dr. Jeff E. Borenstein graduated from the Mount Sinai Medical School, completed internal medicine residency and fellowships in general internal medicine and health services research at the Cedars-Sinai Medical Center, and obtained a Master's degree in Public Health from UCLA. He is board-certified in both Internal Medicine and Medical Informatics and is a Fellow of the American College of Physicians. His primary interests are in team-based, interdisciplinary care, primary and secondary prevention through the application of evidence-based medicine, and quality improvement facilitated by electronic health records. More >
Allison E. Guimera, MD | Watch Video
Pediatrics
Dr. Guimera received her medical degree from West Virginia University School of Medicine. She completed her training in pediatrics at UCLA Mattel Children's Hospital and served as a Pediatric Hospitalist for three years at UCLA Mattel Children's Hospital and UCLA Santa Monica Medical Center. She is currently an Assistant Clinical Professor in Pediatrics at the David Geffen School of Medicine at UCLA. She is a board certified pediatrician and a fellow of the American Academy of Pediatrics. She has been involved in teaching nurses, medical students, and residents and she serves as a mentor for medical students at David Geffen School of Medicine at UCLA. Dr. Guimera is a skilled, caring pediatrician who seeks to provide the highest quality primary care to children in her local community of Porter Ranch. She provides preventative well care and sick care to her patients from birth through adolescence using the most up-to-date evidence based medicine. As a pediatrician and mother herself, she understands the challenges of being a parent and raising healthy and happy children. Her interests outside of medicine include running, yoga, hiking, cooking and spending time with her husband and daughter. More >
Alina Katsman, MD | Watch Video
Family Medicine
Dr. Alina Katsman was raised in Los Angeles. She studied microbiology, immunology, and molecular genetics and earned her Bachelor of Science degree from UCLA. She went on to earn her medical degree from the David Geffen School of Medicine at UCLA followed by an internship and residency in Family Medicine at UCLA. Dr. Katsman's interests include pediatrics, adolescent health, and women's health. More >
Nicole K. Militello, MD | Watch Video
Pediatrics
Dr. Militello received her undergraduate degree from Stanford University. She attended medical school at the David Geffen School of Medicine at UCLA and was elected into the Alpha Omega Alpha medical honor society. She completed her residency in pediatrics at UCLA Mattel Children's Hospital and was a Pediatric Hospitalist for three years at UCLA Mattel Children's Hospital and UCLA Santa Monica. She is passionate about providing comprehensive pediatric care to the Porter Ranch community. Dr. Militello is an Assistant Clinical Professor and enjoys contributing to medical education by teaching residents and mentoring medical students. She is board certified in Pediatrics and a fellow of the American Academy of Pediatrics. In her free time, she enjoys running and has completed several marathons. She also loves the beach and spending time with her family and friends. More >
Kritika Reddy, MD
Family Medicine
Dr. Kritika Reddy is a primary care physician who practices in Porter Ranch. She looks forward to working with each patient and getting to know their stories and backgrounds, and enjoys collaborating with their other specialists. She believes that the key to a strong doctor-patient relationship is partnership, and encourages open communication with all her patients. Her clinical interests include preventive health and managing chronic diseases, such as diabetes, hypertension and kidney disease. She is board certified in Family Medicine and sees patients who are 5 years and older. More >
Jyotsna Sharma, MD
Internal Medicine
Dr. Jyotsna Sharma is a board-certified general internal medicine physician who practices in Porter Ranch. She prefers to develop long-term relationships with her patients, and to educate them on their medical conditions so that they can make informed decisions about their health. Her clinical interests include preventive care as well as chronic disease management. She is fluent in Hindi, Punjabi and Urdu. More >
Renata Selak Stankovic, MD
Internal Medicine
Dr. Renata Stankovic is a primary care physician who practices in Porter Ranch. Her clinical interests include preventive medicine and managing chronic medical conditions through effective physician-patient collaboration and shared decision making. She is board certified in internal medicine. More >
Biayna Zelimkhanian, DO
Family Medicine
Dr. Biayna Zelimkhanian is a board-certified family medicine physician who practices in Porter Ranch. Her clinical interests include preventive care, women’s health and chronic disease management. She enjoys seeing patients of all ages. More >
Juan M. Alcantar, MD
Hematology & Oncology
Dr. Juan M. Alcantar grew up in Oxnard. He attended the David Geffen School of Medicine at UCLA and completed an internal medicine residency at Olive View-UCLA Medical Center. His medical oncology and hematology fellowship was completed at Harbor-UCLA and City of Hope Medical Centers. Prior to completing his fellowship, Dr. Alcantar practiced ambulatory and hospital medicine in Sherman Oaks, California. He was in private practice in hematology/oncology from 2011-2015. Dr. Alcantar is board- certified in internal medicine as well as hematology and oncology. He regularly participates in multi-disciplinary tumor boards to provide optimal and up-to-date treatments for his patients. He is dedicated to providing comprehensive medical care with quality and compassion to his patients. Dr. Alcantar enjoys his spare time with his wife and two sons. He also enjoys soccer and reading on the history of medicine. More >
Peyman Azadani, MD
Cardiology
Dr. Peyman Azadani is a faculty member of the David Geffen School of Medicine as Assistant Professor of Cardiovascular Medicine at UCLA. More >
Chidinma Chima-Melton, MD
Pulmonary & Critical Care Medicine
Dr. Chidinma Chima-Melton received her medical degree from Stony Brook University School of Medicine, New York. She completed her training in Internal Medicine at Yale University in New Haven, Connecticut. She then made the move to the west coast for fellowship in Pulmonary and Critical Care Medicine at Cedars-Sinai Medical Center in Los Angeles. Following her fellowship, she joined UCLA Health. Dr. Chima-Melton's interests include Interstitial Lung Disease (ILD), Occupational and Environmental lung diseases. More >
Fukai L. Chuang, MD
Hematology & Oncology
Dr. Fukai L. Chuang earned his medical degree at Rosalind Franklin University of Medicine and Science/Chicago Medical School. He completed his residency in internal medicine at Cedars-Sinai Medical Center. Dr. Chuang then completed a fellowship in Hematology and Medical Oncology at Harbor-UCLA Medical Center. He treats a variety of conditions from benign hematology disorders to different types of cancer. He strives to deliver compassionate and excellent care to his patients and their families. Dr. Chuang puts great emphasis on providing the best treatment options and improving the quality of lives of his patients. More >
Melissa J. Cohen, MD
Hematology & Oncology
Dr. Melissa J. Cohen is assistant clinical professor of medicine at the David Geffen School of Medicine at UCLA and a board certified medical oncologist practicing at UCLA Hematology/Oncology in Westlake Village and Porter Ranch. She began her medical training at George Washington University in Washington D.C., and then moved to Denver where she completed her internal medicine residency training at the University of Colorado. In 2008, she relocated to Southern California to complete her fellowship training in both geriatrics and medical oncology at UCLA. More >
Tamara Dahhan, DO
Rheumatology
Sheldon J. Davidson, MD
Hematology & Oncology
Dr. Sheldon J. Davidson is a graduate of ALBERT Einstein College of Medicine in New York, training at Mount Sinai Medical Center in NY and LACounty/USC MedCenter in Los Angeles. He has been in the private practice of Hematology/Oncology for 43 years and a member of the UCLA clinical faculty since 1972, participating in teaching, mentoring, and clinical research. More >
Monica El-Masry, MD
Hematology & Oncology
Dr. Monica El-Masry is a hematologist and medical oncologist who practices in Porter Ranch, where she enrolls patients in UCLA Health's full scope of clinical trials. She has a particular interest in benign and malignant hematology, genitourinary malignancies, and cancer prevention. More >
John A. Glaspy, MD
Hematology & Oncology
Dr. Glaspy is a member of the American Society of Clinical Oncology, Southwest Oncology Group, American Federation for Clinical Research, International Society of Interferon Research, and American Society of Nuclear Medicine, among others. He is also a fellow of the American College of Physicians. During the course of his career, Dr. Glaspy has authored more than 270 articles, abstracts, and book chapters. He has received numerous awards and honors, including being named one of the "Best Doctors in America." Currently, Dr. Glaspy is involved in basic research in tumor immunology and the effects of fatty acids on carcinogenesis. His clinical interests also include chemotherapy-induced anemia, the role of hematopoietic growth factors in cancer management, and new approaches to the treatment of breast cancer and malignant melanoma. More >
Brandon S. Grimes, MD, MS
Pulmonary & Critical Care Medicine
Dr. Brandon S. Grimes is a pulmonologist and critical care physician who practices in Beverly Hills, Burbank, Westwood and Porter Ranch. He also provides consultations and critical care services to patients hospitalized in Ronald Reagan UCLA Medical Center, UCLA Santa Monica Medical Center, and Providence Little Company of Mary Medical Center Torrance. He is board certified in internal medicine, pulmonary disease and critical care medicine, and has expertise in COPD/emphysema, bronchiectasis, lung nodules and lung cancer. More >
Helen Huang, MD
Cardiology
Sam A. Kashani, MD
Sleep Medicine
Dr. Sam Kashani is a board-certified sleep specialist who practices in Santa Monica, Porter Ranch and Santa Clarita. Dr. Kashani completed his residency at Arrowhead Regional Medical Center in Southern California, where he worked with the medically underserved population of San Bernardino County with plans of becoming a primary care physician. Upon completing his residency and becoming board-certified, he decided to pursue his interest in sleep medicine and completed his fellowship in sleep medicine at the UCLA David Geffen School of Medicine and West Los Angeles VA Medical Center. His clinical interests include insomnia, pediatric sleep disorders, narcolepsy, sleep apnea, cataplexy, restless legs syndrome, parasomnias, and the associations between sleep, obesity, and metabolic health. Dr. Kashani also has an interest in medical education and is clinical instructor of medicine at David Geffen School of Medicine at UCLA. Prior to pursuing a career in medicine, Dr. Kashani worked in film production and wrote, directed, and produced independent documentary films that have been shown in film festivals worldwide. Dr. Kashani was born and raised in Los Angeles, California and is fluent in English, Spanish, and Persian. Outside of medicine, his interests include classic films, travel, biking, and cooking. More >
David D. Kim, MD
Hematology & Oncology
Dr. David D. Kim is a Southern California native, who graduated summa cum laude from UCLA with a bachelor's degree in Biology. He earned his medical degree at USC Keck School of Medicine and completed his internship and residency in Internal Medicine at UCLA Medical Center. Dr. Kim continued on to complete his Hematology/Oncology fellowship training at UCLA Medical Center. Dr. Kim is a board certified hematologist and medical oncologist who practiced his specialty for 6 years at the award-winning Leavey Cancer Center in Northridge prior to joining UCLA Health in Porter Ranch. More >
Raghu Konanur, MD
Nephrology
Robert Lin Li, MD, PhD
Endocrinology
Dr. Li grew up in Long Island, NY. After moving to California, he attended the California Institute of Technology where he graduated with honors as a double major in biology and computer science. He then moved to Dallas to start the NIH Medical Scientist Training Program at The University of Texas Southwestern Medical Center. In addition to studying medicine, Dr. Li performed research on the hormone causes of obesity in the lab of Drs. Michael Brown and Joseph Goldstein, joint recipients of the Nobel Prize in Physiology or Medicine in 1985. After graduating with both MD and PhD degrees, Dr. Li moved to Chicago where he completed his internship and residency in Internal Medicine at Northwestern Memorial Hospital. In 2016, Dr. Li moved back to LA to start Endocrinology fellowship at UCLA. More >
Lisa M. Little, MD
OB/GYN
Dr. Lisa Little is a native of Southern California, practicing in the San Fernando Valley since 2007. Dr. Little earned her medical degree at Ross University School of Medicine in New York and completed her internship at Geisinger Health System in Pennsylvania. She completed her residency in Ob/Gyn at Southern Illinois School of Medicine in Springfield where she served as Chief Resident and received numerous honors for her ovarian cancer research. More >
Masha J. Livhits, MD
Endocrine Surgery
Dr. Masha J. Livhits is an Endocrine Surgeon and Assistant Professor of Surgery at UCLA. An exceptional achiever since childhood, she attended college at the age of 12 through the highly competitive Early Entrance Program at California State University, Los Angeles. She then received her medical degree at Washington University School of Medicine in St. Louis and was awarded the prestigious Sarnoff Foundation genetics research grant. More >
Jelena Maletkovic, MD
Endocrinology
Dr. Jelena Maletkovic earned her medical degree at the University of Belgrade. She completed her internship, residency and served as Chief Resident in internal medicine at Interfaith Medical Center in Brooklyn, New York. Dr. Maletkovic completed fellowship training in endocrinology, diabetes and metabolism at the David Geffen School of Medicine at UCLA. Dr. Maletkovic's clinical interests and research publications include thyroid, parathyroid and pituitary disorders as well as diabetes mellitus, adrenal disorders and reproductive endocrinology. In her free time she enjoys classical piano playing and traveling with her family. More >
Masoom M. Modi, MD
Rheumatology
Dr. Masoom M. Modi completed her rheumatology training at Cedars-Sinai Medical Center. Originally from Northern California, she obtained her bachelor's degree at the University of California at Berkeley. She attended medical school at St. George's University School of Medicine, and completed internal medicine training at Maricopa Medical Center. Dr. Modi is an active member of the American College of Rheumatology. She enjoys participating in teaching activities with first year medical students at the David Geffen School of Medicine at UCLA. Outside of work, she enjoys spending time with her husband and dog. More >
Ami Philipp, MD
Allergy/Immunology
Dr. Philipp graduated Phi Beta Kappa from University of California San Diego and then completed medical school at the University Of Illinois College Of Medicine at Rockford where she was elected into the Alpha Omega Alpha medical honor society. Dr. Philipp completed residency in Internal Medicine at UCLA followed by Allergy/Immunology fellowship at the West Los Angeles VA that included pediatric training at CHLA. Her love of Allergy/Immunology developed in medical school when she worked with high-risk teens with asthma. Dr. Philipp sees patients of all ages and has a special interest in managing food and drug allergy as well as allergic rhinitis and asthma. More >
Jane Rhyu, MD
Endocrinology - Diabetes and Metabolism
Dr. Jane Rhyu is a general endocrinologist who practices in Porter Ranch. She sees patients with a variety of endocrine conditions, including diabetes, thyroid disease, osteoporosis, and parathyroid, adrenal, and pituitary disorders. Her clinical interests include medical education and quality improvement in medical care. More >
Brendan M. Riley, DPM
Podiatry
Dr. Brendan M. Riley is Board Certified by the American Board of Podiatric Surgery in foot and reconstructive rearfoot/ankle surgery. In 2005, he completed four years of surgical residency training at the West Los Angeles VA, Olive View/UCLA Medical Center and Century City Hospitals. He then joined the University Podiatry Group at UCLA and is currently seeing patients at both the Westwood and Santa Monica offices. He is also a part-time Consulting Physician at the UCLA Arthur Ashe Student Health and Wellness Center and at Olive View/UCLA Medical Center where he enjoys being involved in resident education. His training and professional interests are in foot and ankle trauma, reconstructive surgery and diabetic foot care. More >
Dolly Roy, MD, PhD
Neurology
Dr. Dolly Roy is a board-certified general neurologist and clinical specialist in treating Multiple Sclerosis. Growing up between the Midwest and California, she graduated summa cum laude with a major in Biochemistry and minor in Russian from Washington University in St. Louis where she was in the Scholars Program in Medicine. Dr. Roy continued in the Medical Scientist Training Program at Washington University School of Medicine earning her MD and PhD degrees and solidifying an interest in analytical and compassionate individualized medical care. She completed her Neurology residency at Stanford University School of Medicine where she developed her interests of trying to understand the intersection between coagulation and immunity with ongoing novel research. Dr. Roy has practiced in the San Fernando Valley for more than a decade, has served as the Stroke Director at Northridge Hospital, and is in the process of developing a set of blood tests to predict and track multiple sclerosis relapses and recovery. More >
Gregory Senofsky, MD
Surgical Oncology
Dr. Gregory Senofsky is a board-certified, fellowship-trained surgical oncologist with special expertise in breast and melanoma surgery. He sees patients for consultations in Santa Clarita, Porter Ranch and Encino, and performs surgery at nearby community hospitals and at Ronald Reagan UCLA Medical Center. More >
David Shin, MD, MS
Hematology-Oncology
Dr. David Shin attended medical school at Northwestern University in Chicago. He completed internal medicine residency at University of Massachusetts and fellowship in hematology and medical oncology at the David Geffen School of Medicine at UCLA. He is board-certified in internal medicine, hematology and medical oncology. He treats benign and malignant conditions of hematology as well as various cancers. He endeavors to provide compassionate care. More >
Simi Singh, MD
Digestive Diseases
Dr. Singh attended Drexel University where she completed a combined BS in biology/MD program. During her time in Philadelphia, she was actively involved in coordinating volunteer services for women's community clinics. She completed her residency in internal medicine as well as her fellowship in gastroenterology at Mount Sinai Beth Israel in New York. During her training, she developed a particular interest in women's gastrointestinal health and hepatology. More >
Anna Skay, MD
Digestive Diseases
Dr. Anna Skay is a gastroenterologist who practices in Porter Ranch & Santa Clarita. She is board certified in internal medicine and gastroenterology. She practices general gastroenterology and has clinical interest in gastroesophageal reflux disease (GERD), peptic ulcer disease, gastrointestinal tract bleeding, colon cancer screening, irritable bowel syndrome, chronic constipation and gastrointestinal endoscopy. More >
Matthew Snow, DPM
Podiatry
Dr. Snow is a native of Los Angeles and grew up in the San Fernando Valley. He received a bachelors of Science from Brigham Young University in Provo, Utah. In 2014, he obtained his doctorate degree from Midwestern University in Arizona. He completed a three year surgical residency at MedStar Washington Hospital Center and Georgetown University Hospital. His training placed strong emphasis on diabetic limb salvage, pediatric and adult rear-foot reconstruction, arthroscopic techniques, sports medicine and trauma. He is also fluent in Spanish. Dr. Snow prides himself in providing comprehensive foot and ankle care that is based in mutual patient trust and understanding. More >
Porter Ranch Hematology Oncology physicians are located in the same building in Suite 310 >
