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171 providers
Availability last updated 06/22/2026
Dr. Ricardo La Grotta, MD is a primary care physician. He serves patients at HealthyU Clinics at our Chandler, Arizona clinic.
With over two decades of medical experience, Dr. La Grotta brings his passion and commitment to HealthyU Clinics. Motivated by the organization's dedication to prioritizing patients, he joins with enthusiasm and a belief that the clinic is truly upholding the oath in primary care by putting people first.
Having spent his formative years in diverse regions such as South America, the Caribbean, and the Pacific Northwest, Dr. La Grotta has cultivated a unique perspective. His focus on Primary Care and Urgent Care stems from a seamless blend of practical experience and scientific knowledge.
Although his family has been in the Pacific Northwest for four decades, Dr. La Grotta eagerly embraces Arizona as his new home. He looks forward to immersing himself in the beauty of the state, connecting with its vibrant communities, and indulging in the rich gastronomy that Arizona has to offer.
Dr. Ricardo La Grotta, MD
Family Physician
1010 West La Veta Ave
Suite 615
Orange, CA 92868
Joanna Ayala, MD, is a board-certified physician with over a decade of experience in family medicine. She proudly leads the team at Murrieta Primary Care Clinic in Murrieta, California.
Dr. Ayala earned her medical degree from the University of Guadalajara School of Medicine in Jalisco’s capital city of Guadalajara in Mexico. She served the community of Guadalajara for four years before completing a three-year residency in family medicine at the University of Texas Health Science Center in Houston.
After completing her residency in 2011, Dr. Ayala gained experience practicing in Texas and New Mexico. She moved to Southern California in 2017 and established Murrieta Primary Care Clinic.
Dr. Ayala is proud to offer comprehensive health care services to adults and children over the age of 5. The team takes an open, personalized approach to wellness. Dr. Ayala specializes in primary care and managing chronic conditions, while also offering skin treatments and the latest cosmetic services.
To better serve the Murrieta, California, community, Dr. Ayala is fluent in Spanish and English. She is affiliated with Temecula Valley Hospital in California and prioritizes patient comfort at every stage of the health care journey.
Schedule a consultation online or on the phone to meet Dr. Ayala and the team at Murrieta Primary Care Clinic.
Dr. Joanna Ayala, MD
Family Physician
29995 Technology Drive
Suite 200
Murrieta, CA 92563
Ariana Lundquist, MD
Family Physician
8 Hughes
Suite 125
Irvine, CA 92618
Dr. Kiet Ton, MD
Family Physician
15120 Kensington Park Dr
Tustin, CA 92782
Dr. Gardner Tarlow is a board certified family physician, who has provided advanced health care and prevention to patients in his native Orange County, California for over a decade. Located in Anaheim, Dr. Tarlow offers a wide range of services to patients of every age, from adolescents to seniors.
In addition to routine physicals and wellness exams for children, men, women, seniors, and athletes, Dr Tarlow is an avid athlete and an expert in sports medicine. In the past, Dr. Tarlow has served as team physician and sports consultant for the Savanna High School Football team in Anaheim. Dr. Tarlow has also served as a sports consultant and periodic columnist for Dirt Rider Magazine. In treating elite athletes and weekend warriors alike, Dr. Tarlow offers traditional and advanced alternative care treatment options. Dr. Tarlow has extensive knowledge and medical resources to help optimize each patient's recovery from injury, be it age-related or sports trauma.
Dr. Tarlow grew up in Orange County, earned his undergraduate degree in business from Chapman University and worked in Orange County as a financial consultant before returning to school to earn his medical degree from Ross University School of Medicine, New York. Following medical school, Dr. Tarlow completed an internship and residency in family medicine at Sparrow Hospital/Michigan State University. He has been in private practice in Orange County since 2000 after joining his father and General Surgeon, Herbet Tarlow, MD. Tarlow Medical has been in the same Anaheim location since 1966 and remains committed to serving Anaheim residents and surrounding cities.
Dr. Tarlow’s affiliations include St. Jude Medical Center, American Board of Family Medicine, American Academy of Family Practice, American College of Sports Medicine and American College of Sclerotherapeutic Pain Management.
When not treating patients, Dr. Tarlow enjoys motocross, surfing, skiing, mountain biking, and spending time with his wife and children.
Dr. Gardner Tarlow, MD
Family Physician
1781 West Romneya Drive
Suite C
Anaheim, CA 92801
Elain Tong, DO
Family Physician
18 Endeavor Suite 304
Irvine, CA 92618
David Zebrack, DO, is a conscientious and friendly primary care physician and founder of Temecula Valley Primary Care Physicians. He has been in practice for more than 20 years and has cared for patients in Temecula, California, since 2004.
Dr. Zebrack began his education at UCLA where he earned his bachelor’s degree in psychobiology. He then went on to complete his medical education at the College of Osteopathic Medicine of the Pacific in Pomona, California. After earning his doctorate, Dr. Zebrack completed a one-year rotating internship at Rio Hondo Hospital in Downey, California, and a three-year family practice residency at San Bernardino County Medical Center in San Bernardino, California.
During his postgraduate training, Dr. Zebrack served as the president of his residency program. He has held various leadership positions over the years and has enjoyed mentoring medical students. Upon earning his board certification in family medicine, Dr. Zebrack joined a multispecialty medical group in Torrance, California.
In 2004, Dr. Zebrack relocated with his family to Temecula, California, where he joined Dr. Douglas Wise and eventually founded Temecula Valley Primary Care Physicians. In addition to his primary care practice, Dr. Zebrack has acted as a preceptor to train medical students, participated in research and clinical trials, and served as the department chief of family medicine at Southwest Healthcare System in Wildomar, California.
When he is out of the office, Dr. Zebrack has been a fundraiser for the United Jewish Welfare Fund and served multiple terms on the board of his homeowners' association. Dr. Zebrack enjoys spending time time withife and three children. He stays active through tap dancing, golfing and traveling.
Dr. Zebrack is currently accepting new patients.
Board-Certified: Family Practice
Residency: San Bernadino Medical Center
DO: College of Osteopathic Medicine of the Pacific
BS: University of California, Los Angeles
Member: AMA, American Academy of Family Physicians, California Academy of Family Physicians
Dr. David Zebrack, DO
Family Physician
40285 Winchester Road
Suite 103
Temecula, CA 92591
Primary care physician Douglas Wise, DO, is dedicated to ensuring patients in Temecula, California, have access to high-quality health care. He provides a comprehensive range of general health services at Temecula Valley Primary Care Physicians.
Dr. Wise grew up in the suburbs of Philadelphia. After studying at the Philadelphia College of Osteopathic Medicine, he completed his residency in general practice at the Osteopathic Medical Center of Philadelphia.
In 1981, Dr. Wise started his own private practice in Swedesboro, New Jersey. He moved to the Temecula Valley area in 1987, where he has continued practicing medicine ever since. He has worked with Dr. Zebrack for 10 years and is proud to partner with him in providing care for the residents of Temecula.
Dr. Wise is an active member of his church and community. He volunteers annually for musical productions, and when he’s not in the office, he enjoys jogging and other fitness activities.
Dr. Douglas Wise, DO
Family Physician
40285 Winchester Road
Suite 103
Temecula, CA 92591
Dr. Alisa Farokhian, MD, specializes in internal medicine and is completing her fellowship in Advanced IBD GI.
Dr. Alisa Farokhian prides herself in her dedication to providing patients with exceptional care, respect, and support. She is completing her advanced IBD program at the prestigious Columbia University Hospital, while additionally working on her GI fellowship.
Additionally, Dr. Alisa Farokhian has received countless awards and recognition for her participation in research and publications. She continues her education by attending and speaking at numerous top GI conferences to learn the most technological advances in medicine.
Alisa Farokhian, MD
Gastroenterologist
23600 Rockfield Blvd
Suite 2N
Lake Forest, CA 92630
Dr. Ricardo La Grotta, MD is a primary care physician. He serves patients at HealthyU Clinics at our Chandler, Arizona clinic.
With over two decades of medical experience, Dr. La Grotta brings his passion and commitment to HealthyU Clinics. Motivated by the organization's dedication to prioritizing patients, he joins with enthusiasm and a belief that the clinic is truly upholding the oath in primary care by putting people first.
Having spent his formative years in diverse regions such as South America, the Caribbean, and the Pacific Northwest, Dr. La Grotta has cultivated a unique perspective. His focus on Primary Care and Urgent Care stems from a seamless blend of practical experience and scientific knowledge.
Although his family has been in the Pacific Northwest for four decades, Dr. La Grotta eagerly embraces Arizona as his new home. He looks forward to immersing himself in the beauty of the state, connecting with its vibrant communities, and indulging in the rich gastronomy that Arizona has to offer.
Dr. Ricardo La Grotta, MD
Family Physician
23141 Moulton Parkway
Suite 102
Laguna Hills, CA 92653
Born in the small rural ski resort town of Show Low, Arizona, Cristal Sumerlin is a dedicated Physician Assistant specializing in Internal Medicine. With a strong passion for patient care and a desire to play an active role in their treatment and well-being, she chose the professional career path of a Physician Assistant after working as an X-Ray Technician. Cristal fell in love with medicine and recognized the need to further her education to better serve her patients and the community.
Cristal takes great pride in both her personal and professional accomplishments. As a mother and military spouse, she has successfully balanced the demands of family life while pursuing her professional goals. Her commitment to her patients and dedication to her work make her a source of pride and inspiration.
In the field of Internal Medicine, Cristal's strengths lie in managing complex disease processes such as diabetes. Her previous experience as an orthopedic technician and x-ray tech in an orthopedic practice has also honed her skills in orthopedics. She finds fulfillment in working with patients facing orthopedic conditions and providing comprehensive care.
Beyond her career, Cristal enjoys spending time outdoors and engaging in activities such as camping, hiking, and traveling. She cherishes these moments with her friends and family, as they provide a source of rejuvenation and happiness outside of her job.
With her unwavering dedication, clinical expertise, and compassionate approach, Cristal Sumerlin is an invaluable asset to Dr. Richard Lam's office. She strives to make a positive impact on her patients' lives and is committed to providing comprehensive and personalized care to improve their overall well-being.
Cristal Sumerlin, PA-C
Physician Assistant
41900 Winchester Road
Suite 100
Temecula, CA 92590