Our Primary Care Physicians and Nurse Practitioners
Caren Gould, M.D., brings over 33 years of experience practicing medicine and has been a physician with On Lok for over 28 years.
Before joining On Lok, Dr. Gould provided care at Kaiser Foundation Hospital in South San Francisco, and McGuire VA Medical Center in Richmond, Virginia.
She obtained her B.A. in Biology at the State University of New York in Buffalo, in 1975. Following this, she attended the Medical College of Virginia, where she earned a Doctor of Medicine degree. She continued attending Medical College of Virginia to complete her residency.
Dr. Gould is specialized in Internal Medicine, Geriatrics, Hospice and Palliative Medicine.
ElanaShpall, M.D., M.S., is an Internal Medicine Board certified Geriatrician at On Lok Lifeways.
She attended the University of California, Berkeley for undergraduate education from which she obtained a B.A. in English Literature in 2007. Upon completion of her undergraduate studies, she worked as a staff research assistant at Children’s Hospital Oakland Research Institute, where she investigated inhibitors of the hedgehog signaling pathway.
She attended graduate school at the University of California, Berkeley – University of California, San Francisco Joint Medical Program, during which she earned her Master of Science from the University of California, Berkeley in 2011 and a Medical Doctorate from the University of California, San Francisco in 2013.
She completed an Internal Medicine residency at Yale University from 2013 to 2016 before returning to the University of California, San Francisco for a fellowship in Geriatrics. Upon completion of her fellowship in 2017, she joined the On Lok team, where she serves as a bilingual primary care physician in Spanish and English.
Qingping Wang, M.D., is board certified Internal Medicine and Geriatric Medicine.
She earned her Ph.D. in Biochemistry in 1989, and graduated with a Doctor of Medicine degree at the University of New Mexico in 1997. Her studies were followed by three years of residency in Internal Medicine at the Thomas Jefferson University Hospital, from 1997 to 2000. In 2001, she completed a Fellowship Program inGeriatric Medicine at the Hospital of the University of Pennsylvania.
Dr. Wang practiced medicine for 16 years in her own private practice, first in Lansdale, PA, and later in Lansing, before joining On Lok. She is passionate about serving a diverse population with different cultural backgrounds and enjoys guiding people through complicated medical problems.
Throughout her training she participated in global health and other volunteer work in Chile, El Salvador, Ghana, Colombia, and Mexico.
Nurse Practitioner Silvia Estrada Murillo is Adult Gerontology Primacy Care Board Certified and is Public Health Nurse Certified.
Upon completion of her B.A. in Gender & Women studies at the University of California, Berkeley, she joined Planned Parenthood. This gave her the opportunity to help a diverse array of patients receive and gain access to reproductive services. She continued providing care at Planned Parenthood Community Health Centers until she began her graduate program at the University of California, San Francisco in 2014. There she obtained her Registered Nurse License and continued attending until she completed her Master of Science in Nursing, with a specialization in the Adult-Gerontology Primary Care.
During her graduate school residencies, she transitioned through community health centers that served a large portions of Spanish speaking populations. Other rotations she completed were primary care in community college health centers, hospice care at the San Francisco VA Medical Center, and orthopedics in California Pacific Medical Center, St. Luke’s in San Francisco. These experiences gave her vast exposure of providing care throughout the lifespan of a patient.
In 2017, shortly after graduating from the University of California, San Francisco, she joined On Lok, where she enjoys interacting with all her participants and the On Lok community.
In her free time, she volunteers and enjoys learning more about palliative and hospice care, gaining more experience and education on how to provide the best and most culturally sensitive care at the end of life, and how to better serve special populations.
Nurse Practitioner Arlene Lamayo, brings 23 years ofnursing experience and 3 years of nurse practitioner experience, specializing in Adult and Geriatric patients.
After graduating from Riverside College in 1994, with a B.S. in Nursing, she began her medical career. As a Traveling Nurse, her work has brought her around the United States and Canada, where she has provided care for patients in hospitals, medical centers, and clinics.
From 2012 to 2014, she attended Walden University in Minneapolis, Minnesota, where she completed her Master of Science in Nursing. Throughout her career, she hasbecome very knowledgeable and experienced in Endoscopy, ER, CCU, ICU, Medsurg, PCU, Public Health, Psychiatry, Sedation and Pain Management, and Telemetry.
N.P.Lamayo currently practices medicine at the San Jose Regional Medical Center, the Bay Area Hospitalists, and On Lok. She assists patients whose primary languages are Tagalog, Mandarin, and English.
Janette Lin, M.D., brings eight years of prior experience practicing medicine. She spent the first five years of her career at DotHouse Health in Dorchester, Massachusetts, before moving to Atlanta, Georgia, where she provided care for two years at Kaiser Permanente. She spent one year at Loyola University Medical Center, near Chicago, Illinois before joining On Lok in 2017.
Lin graduated from The Warren Alpert Medical School of Brown University in 2005. This was followed by the completion of her residency at the Internal Medicine Residency at the Boston Medical Center in 2008.
As a skilled physician, she is specialized in Internal Medicine, and board certified bythe American Board of Medical Specialties.
Dr. Lin works with patients at On Lok whose primary language is English.
Mary Tang, is board certified by the American Nurses Credentialing Center (ANCC) and is a licensed Nurse Practitioner in the state of California and New York.
Before coming on board the On Lok team, she worked as an Adult-Geriatric Nurse Practitioner at the Prominis Medical Services in Brooklyn, New York. Prior to this, she was a Registered Nurse at Lutheran Medical Center in the post-op unit, in Brooklyn, New York. In addition to this, she has Home Aide experience.
After obtaining her B.A. in Psychology at the University of California, Berkeley, she attended Columbia University School of Nursing in New York, New York, where she earned a B.S. in Nursing. She went on to earn a Master of Science, Adult-Geriatric Primary Care Nurse Practitioner degree, also at Columbia University.
Nurse Practitioner Tang provides care to Mandarin and English speaking On Lok participants.
Andrea Kung, M.D., has been practicing medicine at On Lok Lifeways for 22 years. She is board certified by the American Board of Internal Medicine (ABIM). She completed her studies in medicine at the Medical College in Mandalay Myanmar, before joining On Lok in 1996.
Driven by her passion for helping others, she enjoys interacting with and treating On Lok participants.
Elisha Jang, Gerontological Nurse Practitioner, is board-certified by the American Nurses Credentialing Center (ANCC).
She completed her B.A. at Wellesley College, in Wellesley, Massachusetts, before continuing her studies at the University of California, San Francisco where she earned her Master of Science in Nursing.
Before she began providing care as a Nurse Practitioner at On Lok, she worked in clinical research for Alzheimer’s disease at Brigham and Women’s Hospital in Boston, Massachusetts. Following this, she worked as a Registered Nurse at the University of California, Davis Medical Center, in the orthopedics andtrauma unit. Additionally, she cared for patients at vaccination and wellness clinics around the San Francisco Bay Area.
She assists On Lok participants in English, Spanish and Mandarin.
Nurse Practitioner Carol Lim is a board certified Geriatric Nurse Practitioner from the American Nurse Credentialing Center (ANCC). She joined On Lok in 1991, first as a Clinic Registered Nurse for 6 years, then as a Geriatric Nurse Practitioner in 1997.
Outside from On Lok, she has worked as an instructor at the Public Health Department, since 1991, and City College of San Francisco since 2006, where she teaches Preventive Health and Safety, CPR, and First Aid.
Lim attended the University of Berkeley, California, where she earned a B.A. in Biological Science, followed by her studies at San Francisco State University, where she earned her B.S. in Nursing. In 1997, she graduated from the University of California, San Francisco with a Master of Science in Geriatric Nursing.
ChanatipSuksang, M.D., is board certified by the American Board of Family Medicine (ABFM), and is licensed to practice medicine in California and Illinois. He has worked as a Primary Care Physician, specialized in Geriatric and Urgent Care, since 1999. Dr. Suksang has practiced medicine in several healthcare centers around the San Francisco Bay Area.
He graduated from University of Iowa with a B.A. in Biochemistry in 1986. He went on to complete a Master of Science in Physiology and Biophysics at the same university, from 1990 to 1992. During this time, he worked as a Research Assistant in the laboratories of the College of Medicine of the University of Iowa. He graduated with his Doctor of Medicine degree in 1996 from the University of Iowa. From 1996 to 1999, he underwent his residency in Family Medicine at the University of Illinois in Chicago.
He is the illustrator and author of several publications, the author of several abstracts on the subject of medicine, he precepted medical students from University of California Berkeley, and precepted residents and nurse practitioners from Kaiser in Oakland, CA.
Demi Lu, Nurse Practitioner, is specialized in Adult Gerontology.
Prior to joining On Lok, she worked for over 10 years in nursing, providing care primarily to the elderly. She worked in a variety of settings around the San Francisco Bay Area, including hospitals, skilled nursing facilities, and home health agencies. During those years, she developed an interest in the aging population, due to their being vulnerable, underserved and having complex, challenging healthcare needs.
In 2013, she continued her education at the University of California, San Francisco, with a concentration in Primary Care. Throughout the course of her program, she completed a year-long clinical rotation at a Sutter Health, primary care clinic in San Francisco, as well as some specialty rotations in Women’s Health, Palliative Care, Neurology, Urgent Care, and Kidney Transplant. Upon completion of her program, she became a Board certified Adult Gerontology Nurse Practitioner.
She joined On Lok in 2017, where she works with participants in English and Chinese.
Fusheng Wang, M.D., board certified since 1996, by the American Board of Internal Medicine (ABIM), has been with On Lok since 1998. He is a member of the American College of Physicians (ACP) and the American Academy of Medical Acupuncture (AAMA). He is an associated professor of the Department of Medicine at the University of California, San Francisco.
While living in China, he attended Qingdao Medical College, from 1978 to 1983; there he earned his Doctor of Medicine degree. He then attended the First Medical University of People’s Liberation Army in Canton, from 1983 to 1986, where he earned a Master of Science, specializing in Cell Biology. Following this, he attended Beijing University, where he did research related to gut hormones.
Dr. Wang came to the United States in 1988 and did research work regarding tumor suppressor genes’ role in colon cancer, then finished his internal medicine training in SUNY Downstate Medical Center in Brooklyn, New York, from 1993 to 1996.
He is the author of a dozen reputable publications on scientific research related to his field. In addition to this, he has a strong interest in Chinese medicine, and has written an abstract on the integration of East-West medicine for pain management in frail elderly. This work was presented during a renowned health conference, held in San Francisco in 2000.
Though he is a physician among the Rose team at On Lok, he gives acupuncture services to both Rose and Jade team participants. He works primarily with those who speak English and Chinese.
Nurse Practitioner Leslie Lin, board certified by the American Nurses Credentialing College (ANCC), is specialized in Gerontology.
She completed her undergrad studies in Health Education at San Francisco State University, followed by her studies in nursing at the University of California, San Francisco, where she graduated in 2007. Before becoming a Nurse Practitioner, she formed a dynamic background in health care, working as a medical interpreter, health educator, QA and staff trainer at San Francisco General Hospital, and finally as an acute care nurse at San Francisco General Hospital.
Lin underwent residency through home based Primary Care with Kaiser, hospice with the U.S. Department of Veterans Affairs, and at On Lok Lifeways PACE Center in San Francisco.
She works with On Lok participants whose primary languages are English, Mandarin, and Cantonese.
Caitlin Burchfield is an Adult Gerontology Nurse Practitioner with 7 years of patient care experience.
She earned her Bachelors of Science in Nursing at the University of Virginia. Following this, she completed a Master of Science Nurse Practitioner program at the University of California San Francisco, where she also earned a specialized minor in Diabetes Care. Her Master’s Thesis focused on staffing patterns among transitional care programs from hospital discharge to home. Upon graduation, she completed a Nurse Practitioner Residency at the San Francisco Veteran’s Administration Medical Center.
Prior to working at On Lok, she was a Registered Cardiology Nurse for 3 years at the University of Virginia Hospital, and 1 year at Stanford Hospital.
Nurse Practitioner Burchfield is specialized in Geriatrics and Diabetes. She has participated in quality improvement efforts aimed at reducing polypharmacy and improving dual anti-platelet prescribing safety.
She works with English and Spanish speaking participants.
Diana Teng, a Board Certified Adult-Geriatrics and Occupational-Environmental Health Nurse Practitioner, with six years of previous health care related experience, has been a part of the On Lok team since 2016. She has worked as a Home Hospice Care Giver, Neurosurgery Stanford Health Care Clinic Observership, Emergency Medical Technician, and continues acting as Health Coach for the University of California San Francisco Geriatric Surgery Clinic. She has also completed her residency as a Registered Nurse. At On Lok, Teng works with participants in Mandarin and in English.
After graduating with a B.A. from the University of California, Davis, in 2013, she continued her studies at the University of California, San Francisco, where she earned a Master of Science in Nursing, in 2016.
When not practicing medicine, Teng teaches subjects related to her field, and has taught at several schools in the San Francisco Bay Area, including the University of California, Davis, and the University of California, San Francisco.
As someone who values quality care, she believes in close follow ups, emphasizes evidence based treatments, advocates for her patients, and takes a team-based care approach.
Hong Wu, M.D., specialized in Internal Medicine, has 11 years of experience practicing medicine. She is board certified by the American Board of Internal Medicine (ABIM).
After graduating from Beijing Medical University, she completed her residency at a program affiliated with University of California, San Francisco in Fresno, CA. Before joining On Lok, she worked as a Neurologist and as a Researcher, first at Beijing from 1988 to 1997, then at the University of California, San Francisco from 1997 to 2000.
Dr. Wu works with patients in English and Mandarin.
Kati Murray, M.D., with over 20 years of experience, is board certified in Internal Medicine, Geriatric Medicine and Hospice and Palliative Care.
She studied Biology at Washington University in St Louis, from 1978 to 1982. She went on to attend her studies in medicine at Albany Medical College from 1982 to 1986, and completed her residency in Internal Medicine from 1986 to 1989 at California Pacific Medical Center, in San Francisco. After a short time in private practice, she returned to training and completed a fellowship in Geriatrics at the University of California, San Francisco.
Dr. Murray’s dedication and passion for her work reflects through her past experiences. Since 1996, she has worked in nursing homes, at On Lok as a Primary Care Physician, in retirement communities as a Medical Director and for the Medicare QIO (Quality Improvement Organizations), where she performed quality of care reviews.
Dr. Murray is a Fellow of the American College of Physicians.
Uma Tadepalli, M.D., is board certified in Internal Medicine by the American Board of Internal Medicine (ABIM).
She completed a B.A. at Princeton University before continuing on to obtain her Doctor of Medicine at Icahn School of Medicine at Mount Sinai. During her studies in medicine, she earned a distinction in research.
Dr. Tadepalli went on to complete 3 years of Internal Medicine residency at Cambridge Health Alliance, followed by the completion of her Geriatrics Fellowship at the University of California, San Francisco.
In 2015, she won the University of California, San Francisco Tideswell Geriatrics Award, and in 2016, she was presented with the Woolhandler and Himmelstein Award for Research Excellence.
Dr. Tadepalli is a Geriatrician at On Lok and treats patients at in both English and Spanish.
ChangQing An is Family Nurse Practitioner certified by the American Association of Nurse Practitioners (AANP), and Adult Nurse Practitioner certified by the American Nurses Credentialing Center (ANCC).
She earned a B.S. in Nursing at Shandong Medical University, in Ji’nan, China, before continuing her education at the State University of New York, in Buffalo, New York. She earned her Masters of Science in Nursing, Adult-Nurse Practitioner degree in 2001. Later, she underwent and completed a Family Nurse Practitioner program at the George Washington University, Washington, D.C.
She began her career as a Registered Nurse at the Pacific Alliance Medical Center in Los Angeles, then at Saint John’s Health Care Center in Santa Monica, California, followed by San Gabriel Valley Medical Center in San Gabriel, California. In 2007, she began practicing medicine as a Nurse Practitioner, in Monterey Park, California and Riverside, California, before moving to San Antonio, Texas, where she continued providing patient care until 2016.
An’s strong interest and curiosity in medical science brings her joy to her work day after day.
Christine Chelladurai, DO., is Board Certified in Geriatric Medicine and Internal Medicine.
After completing her B.S. in Biology at the University of Michigan in Flint, Michigan, she obtained her Doctor of Medicine degree at Michigan State University College of Osteopathic Medicine in East Lansing, Michigan. This was followed by residency at Internal Medicine Residency at Genesys Regional Medical Center in Grand Blanc, Michigan, where she served as the Chief Resident for Internal Medicine Residency for 2 years. She also served as an Internal Medicine Resident representative for LEAN Project at Genesys Regional Medical Center for 2 years. Following her residency, she completed a Geriatric Medicine Fellowship at William Beaumont Hospital in Royal Oak, Michigan.
In 2011, she was awarded Intern of the Year at Genesys Regional Medical Center and in 2012, she won the ACOI (American College of Osteopathic Internists) Excellence in Humanism and Teaching Award.
Before coming to On Lok, Dr. Chelladurai was a Geriatrician for Beaumont Health and worked for this health system in Wayne, Macomb, and Oakland counties in Michigan. She worked as clinical faculty for Beaumont Academic Geriatric Group and served as the Medical Director for Shorepointe Nursing Center for 2 years. While working at Beaumont, she served as a Physician Advisor for multiple committees including Beaumont Grosse Pointe Geriatric Trauma Program Initiative, Beaumont Health Chronic Pain Consortium, Beaumont Grosse Pointe Readmissions Committee, and the NICHE Initiative (Nurses Improving Care for Healthcare Elders) at Beaumont Grosse Pointe and Royal Oak.
Dr. Chelladurai brings 7 years of experience to On Lok, and works with patients whose primary languages are English and Tamil.
Deborah Dang, M.D., has practiced medicine at On Lok for over 25 years. She is a member of the American College of Physicians and the American Medical Association.
Prior to working at On Lok, she practiced medicine at Kaiser Permanente, South San Francisco, and for a locum tenens company, Comprehensive Health Systems, in Salt Lake City, Utah.
Upon graduating from Creighton University, Omaha, Nebraska, with a B.S. in Biology, she went on to obtain her Doctor of Medicine at Creighton University School of Medicine, Omaha, Nebraska.She completed an internship, with a specialization in Internal Medicine at the Good Samaritan Hospital in Phoenix Arizona. This was followed by her Internal Medicine residency at the Creighton University Affiliated Hospitals, Omaha, Nebraska.
Dr. Dang is licensed to practice medicine in the states of California and Hawaii.
Michelle Ong, M.D., with 17 years of experience, is board certified by the American Board of Internal Medicine (ABIM).
After obtaining a B.S. at the University of California, Davis in 1991, she attended Albert Einstein College of Medicine in Bronx, NY, where she earned her Doctor of Medicine degree in 1995. Following her studies, she underwent and completed her Internal Medicine Residency at Loma Linda University School of Medicine, from 1997 to 2000.
She began practicing medicine at Kaiser Permanente in South Sacramento, where she stayed from 2000 to 2008, before moving to Mercy San Juan Medical Center in Carmichael, CA, from 2008 to 2011. She then practiced medicine at John Muir Medical Center in Orinda, CA for one year before joining On Lok in 2012.
Qiu Na Zheng, is a Nurse Practitioner specialized in Adult and Gerontology Primary Care.
She earned her B.S. in Food Microbiology at the University of California, Davis, and continued her studies at City College of San Francisco, where she obtained her Nursing Degree.
After working for seven years as a Registered Nurse at On Lok, she earned her Master of Science in Nursing at the University of California, San Francisco. Upon completion of her Master’s Degree, she began working for On Lok as a Nurse Practitioner.
She cares for participants who speak English, Cantonese and Mandarin.