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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.

Through active listening and thoughtful questioning, I am to deliver a high-quality care that utilizes the most recent advancements in medicine. I am especially interested in stress-related health issues and wellbeing including elderly care, women's health, and sports medicine and offer over years of experience. I earned my medical degree at Western University of Health Sciences and residency training at Pomona Valley Hospital Medical Center where I completed family medicine/geriatrics/women's health/sports medicine/hospital medicine/comfort care training. Later, I went on to inpatient/outpatient care at Pomona Valley Hospital and San Antonio Regional Hospital.

With an extensive and diverse background across multiple fields of nursing, Zohra Damawand, brings a wealth of clinical expertise and a multifaceted perspective to patient care. Currently serving as a Certified Nurse Practitioner, Zohra, leverages years of hands-on experience to deliver high-quality, evidence-based interventions tailored to the unique needs of every patient.

With a commitment to care excellence, she applies a comprehensive approach to diagnosis and treatment, and delivers informed care, tailored to patients’ needs and preferences. She is driven by a patient-centered philosophy of medical care. Her goal is to improve patient outcomes, advance primary care access, foster patient education, and personalize care plans, by combining technical proficiency with a compassionate, patient-centered philosophy.

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.

Paul Moya, DO, is a board-certified family medicine physician who has been proudly serving Glendora, California, and the surrounding communities for more than 13 years. As part of United Family Physicians, Dr. Moya provides comprehensive care across all stages of life, with special expertise in preventive medicine, geriatric care, and the management of both acute and chronic medical conditions.

After earning his medical degree from Western University of Health Sciences in Pomona, California, Dr. Moya completed his internship and residency at Pomona Valley Hospital, a UCLA-affiliated program. Today, he partners with Emanate Health, Regal Medical Group and Lakeside Community Healthcare, giving his patients access to a vast network of specialists, leading hospitals, labs, and support services designed to make quality care accessible and seamless.

Dr. Moya believes in building lasting relationships with patients and their families through personalized education, preventive care, and individualized treatment plans. His approach is compassionate, approachable, and rooted in a dedication to long-term wellness. He is fluent in Spanish and is affiliated with Foothill Presbyterian Hospital, extending his reach in providing trusted medical care.

Outside of medicine, Dr. Moya enjoys gardening, hiking, and cooking. Patients appreciate his commitment to listening, understanding, and guiding them through every stage of their health journey. By combining clinical excellence with a caring bedside manner, Dr. Moya continues to make a meaningful difference in the lives of those he serves.

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.

Excellence is at the heart of the care that Marcella Bonnici, MD provides for each of her patients at her aesthetics and family medicine practice serving Wildomar, Murrieta, Temecula, CA, and the surrounding areas. 

From her days as an undergraduate student to the moment she chose to return to her California roots, Dr. Bonnici has demonstrated a commitment to learning more about preventive care and family medicine, using that knowledge to improve her patient’s quality of life.   

After earning her Bachelor of Science in biological sciences at the University of California, Irvine, Dr. Bonnici completed her medical studies at the historic Ross University School of Medicine. She later trained at several hospitals throughout the boroughs of New York City. She went on to receive the Outstanding Second Year Resident Award and was nominated for the Arizona Academy of Family Physicians Brazie Award while she was a resident at Scottsdale Healthcare.  

Dr. Bonnici’s love of family medicine and her interest in preventive care inspired her to open her first practice in Scottsdale, Arizona. Motivated by her love of her native California, she returned to her home state to help her fellow Californians lead healthy lives.