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Norr Santz, MD is a board-certified physician in physical medicine and rehabilitation who provides quality care to patients at the West Los Angeles office of Health Atlast. Dr. Santz completed her undergraduate studies at the University of California Los Angeles then earned her medical degree from Ross University School of Medicine. She went on to complete her residency in Physical Medicine & Rehabilitation at SUNY Downstate Medical Center in Brooklyn, NY. Dr. Santz provides comprehensive care to her patients and strives to empower and support them with patient education.
She values a multidisciplinary approach to maximize her patients’ physical function.

Dr. Keyvan Shirazi is a board-certified Internal Medicine physician and the founder of Shiraz Medical Group, where he has been providing comprehensive adult primary care to the community for more than two decades. Known for his compassionate bedside manner, thorough approach, and dedication to personalized care, Dr. Shirazi is committed to helping patients achieve long-term health and wellness through preventive medicine, chronic disease management, and evidence-based treatment.

Dr. Shirazi completed his Internal Medicine residency training at MCP Hahnemann University and earned his medical degree from St. George’s University School of Medicine. He also studied Health Science at the University of Nevada, Reno. He has been board certified in Internal Medicine since 2002 and holds certifications including DEA and ECFMG credentials.

Since opening Shiraz Medical Group in 2003, Dr. Shirazi has built a reputation for delivering attentive, patient-centered care while managing a wide range of acute and chronic medical conditions. In addition to his private practice, he has served in numerous leadership and medical director roles throughout Southern California, including Medical Director positions at Providence Cedars-Sinai Tarzana Medical Center, Lake Balboa Care Center, and The Center at Park West. He has also been actively involved with peer review, case management, hospital medicine, hospice care, and skilled nursing facility care throughout his career.

Dr. Shirazi also provides medical care and physician services at several skilled nursing and rehabilitation facilities, including Los Angeles Jewish Health, Lake Balboa Care Center, and Tarzana Health and Rehabilitation Center, where he remains dedicated to improving the health, comfort, and quality of life of his patients.

He is fluent in English, Farsi, and Hebrew, allowing him to connect with and care for patients from diverse cultural backgrounds. Patients value Dr. Shirazi for his clinical expertise, thoughtful communication, and genuine commitment to providing high-quality medical care. His philosophy centers on treating every patient with compassion, respect, and individualized attention while fostering strong, long-term physician-patient relationships.

Ashkan Lashkari, MD, is a physician at Wellness Oncology and Hematology. Dr. Lashkari offers personalized oncology and hematology care to patients at the practice’s offices in West Hills and Tarzana, California.

Born and raised in Santa Monica, California, by parents who were both dedicated educators, Dr. Lashkari knew at a young age that he wanted a career that would allow him to help others. He stayed close to home for his education, earning bachelor’s degrees in art history and molecular biology from the University of California at Los Angeles, and then remained at UCLA to complete his Doctor of Medicine degree.

During medical school, Dr. Lashkari developed a keen interest in cancer care, inspired by the discoveries of new treatments and the possibility of helping people with challenging conditions.

After an internal medicine residency at UCLA, Dr. Lashkari completed a fellowship in hematology and medical oncology at the City of Hope Comprehensive Cancer Center in Duarte, California. He focused his time on learning how to design clinical trials and researching familial cancer syndromes. His vast experience allows him to provide high-quality, compassionate care to his patients.

Dr. Lashkari is certified by the American Board of Internal Medicine, the American Board of Medical Oncology, and the American Board of Hematology. Because of his ongoing dedication to knowing about the latest oncology treatments and advances, he retains active membership in the Medical Oncology Association of Southern California, the American Society of Hematology, and the American Society of Clinical Oncology. He is also an assistant clinical faculty member at Olive View–UCLA Medical Center in Sylmar, California.

Dr. Lashkari enjoying spending time with his wife and two daughters, traveling, running, visiting museums, playing tennis, and cooking. He speaks English and Farsi.

Omid S. Shaye, MD, is an oncologist and hematologist at Wellness Oncology and Hematology. Dr. Shaye treats patients at the practice’s medical offices in West Hills and Tarzana, California.

Dr. Shaye is a native of the San Fernando Valley. He earned his undergraduate degree from the University of Southern California in Los Angeles, then remained at USC to complete his Doctor of Medicine.

During his residency and fellowship in hematology and oncology at the USC Norris Cancer Center, Dr. Shaye was chosen as chief fellow of medical oncology. He then established Wellness Oncology and Hematology in order to share the newest, most cutting-edge therapeutic options with cancer and hematology patients in the San Fernando Valley.

Dr. Shaye sees his role as the “quarterback of a patient’s care,” offering individualized treatments that can include options like targeted therapies, clinical trials, immunotherapies, chemotherapy, radiation, and surgery. He spends time getting to know his patients and their families as he helps them along the road to wellness.

Dr. Shaye is certified by the American Board of Internal Medicine and the American Board of Medical Oncology. He is a member of the Medical Oncology Association of Southern California, the Community Oncology Alliance, and the American Society of Clinical Oncology. He speaks English, Spanish, and Farsi.

Christopher Ho, MD, is a physician at Wellness Oncology and Hematology. Dr. Ho treats cancer and hematology patients in West Hills and Tarzana, California, as part of the Wellness Oncology and Hematology medical team.

Dr. Ho was born and raised in Philadelphia. He earned his undergraduate degree from Johns Hopkins University in Baltimore, where he lettered in lacrosse, then returned to Philadelphia to earn his Doctor of Medicine from Temple University. While in medical school, he clerked at the Fox Chase Cancer Center in Philadelphia, an experience that ignited his interest in medical oncology research.

After a residency in internal medicine at the University of California, Davis, Dr. Ho received subspecialty training in medical oncology and hematology at the University of Southern California’s Keck School of Medicine in Los Angeles. He served as chief fellow of medical oncology.

Dr. Ho is certified by the American Board of Internal Medicine, the American Board of Medical Oncology, and the American Board of Hematology. To keep up with the latest advancements in his specialties, he retains active membership in the Medical Oncology Association of Southern California, the American Society of Hematology, and the American Society of Clinical Oncology.

Dr. Ho has dedicated himself to the belief that the health of every one of his patients depends on a comprehensive, personalized approach to care that includes a combination of the latest treatment techniques and the personal touch of a physician who truly cares.

Because of his wide range of interests, including music, nutrition, calisthenics, Philadelphia Eagles football, and gourmet food, Dr. Ho is able to connect easily with his patients and share insightful conversations. He is a devoted family man, spending as much time as possible with his wife and two young sons. He speaks English, Spanish, and Chinese.

Dr. Yelyzaveta Prysyazhnyuk is a compassionate and highly trained physician with a strong commitment to advancing mental health care. She brings a rich background in internal medicine and a deep interest in the intersection of physical and mental well-being to her role at Vital Psych MD LLC. Dr. Prysyazhnyuk completed her undergraduate studies at Barnard College of Columbia University before earning her medical degree from SUNY Downstate College of Medicine. She went on to complete her residency in Internal Medicine at the Zucker School of Medicine at Hofstra/Northwell NS/LIJ, where she also obtained certifications as a clinician educator and in lifestyle medicine. At Vital Psych MD, Dr. Prysyazhnyuk is excited to focus her practice on supporting individuals through evidence-based care that bridges the gap between physical and mental health. Her clinical experience and academic foundation have shaped her integrative approach, helping achieving overall well-being and a lasting change.

Grace Moussa, M.D., completed her medical degree at Kuwait University School of Medicine. She took her training at St. Mary's Hospital, University of Connecticut, Yale University, and Columbia University. Dr. Moussa has been practicing since 1994 as a physician. She speaks English, Arabic, French, and medical Spanish languages.

Bao Khanh Thai, DO, is a board-certified family medicine physician with more than 13 years of experience. She serves patients at United Family Physicians in Glendora, California, providing comprehensive care for patients of all ages, with a special focus on preventive medicine, chronic disease management, and senior care. Known for her compassionate and approachable style, Dr. Thai is dedicated to building long-term partnerships with her patients and their families.

Dr. Thai earned her medical degree from Western University of Health Sciences in Pomona, California, and completed her internship and residency training at Pomona Valley Hospital, a UCLA-affiliated program. She is fluent in Vietnamese, allowing her to serve a diverse patient population and make quality healthcare more accessible to the community.

Through her affiliation with Emanate Health, Regal Medical Group, and Lakeside Community Healthcare, Dr. Thai’s patients benefit from access to leading hospitals, specialists, labs, imaging facilities, and chronic care support programs. She also maintains hospital privileges at Foothill Presbyterian Hospital, ensuring continuity of care when patients need it most.

In addition to her clinical expertise, Dr. Thai emphasizes patient education and preventive care, empowering individuals to make informed decisions about their health.

In her free time, she enjoys gardening, hiking, and traveling, bringing the same curiosity and care to her personal life as she does to her practice. Patients trust Dr. Thai for her dedication to personalized, high-quality care that supports overall well-being at every stage of life.