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45 providers
Availability last updated 07/05/2025
MEET OUR PROVIDER - KATHRYN PAWELEK
Katie Pawelek, MSN, APRN, FNP-C, is a dedicated Family Nurse Practitioner with a passion for delivering patient-centered care at Temecula Medical Group. With over a decade of experience in nursing, Katie brings a wealth of expertise from her work in cardiology, emergency services, and surgical care across prestigious institutions like Scripps Green Hospital and Houston Methodist Willowbrook Hospital. Holding advanced certifications including FNP-C, CEN, and ACLS, she excels in managing acute and chronic conditions with a focus on empowering patients through education and compassionate care.
Katie’s approach to healthcare is rooted in her commitment to timely, individualized treatment plans that enable patients to understand and manage their health effectively. Her extensive background in high-acuity settings, such as Level I Trauma and STEMI Receiving Centers, has honed her ability to make critical decisions and collaborate seamlessly with interdisciplinary teams. At Temecula Medical Group, she provides comprehensive care, from ordering and interpreting diagnostics to performing procedures and furnishing medications.
Outside of her professional life, Katie is an active mother who can often be found cheering on her children at volleyball games or baseball fields. A lover of the outdoors, she enjoys music, dancing, art, and home decorating, bringing the same warmth and creativity to her patient interactions. Katie’s blend of clinical excellence and genuine care makes her a trusted provider for families in the Temecula community.
Kathryn Pawelek, FNP-C
Nurse Practitioner
27555 Ynez Road
Ste 102
Temecula, CA 92591
MEET OUR PROVIDER - RYAN ROWAN
Ryan D. Rowan, PA-C, is a skilled Board Certified Physician Associate specializing in primary care. At Temecula Medical Group in Temecula, California, he takes pleasure in connecting with patients, learning about their lives, and helping them achieve their health goals. He enjoys working with people from all walks of life, especially those of different cultures.
Ryan was born and raised in Dana Point and Mission Viejo, California. After earning his BA from Brigham Young University, he worked as a medical interpreter for Spanish-speaking patients and loved what he saw. He observed many clinicians and nurses compassionately caring for their patients and found such purpose in their daily efforts and satisfaction in their conversations.
Ryan then completed Drexel University’s Hahnemann Physician Assistant Program with a Master of Health Science in 2007. He scored in the 95% on the National Board Exam. Aside from all primary care skills and duties, Ryan is trained in Osteopathic Manipulation Technique of the spine.
Ryan has provided health care to underserved populations in two different Federally Qualified Health Centers. He spent a year and a half in Central California and five years in Idaho, four of which he served as lead clinician for a rural health clinic. Currently, Ryan is participating in a pilot test program to improve the recertification process for all Physician Assistants in the US by the National Commission for Certification of Physician Assistants.
He has been described as a true caregiver; his patients often leave appointments feeling lifted. In addition to English, Ryan also speaks fluent Spanish and Portuguese.
Outside of work, Ryan loves participating in sports with his four children, including football, soccer, basketball, and any sport with a board. He also enjoys the musical benefits of four accomplished musicians (his kids) in his home.
Mr. Ryan Rowan, PA-C
Physician Assistant
27555 Ynez Road
Ste 102
Temecula, CA 92591
MEET OUR PROVIDER - DR. “RICH” RAWSON
Richard Rawson, DO, is a board-certified Osteopathic Physician. Surgeon and a concierge primary care physician who sees patients at Temecula Medical Group in Temecula, California. Dr. Rawson is a native of Southern California. He grew up in Mission Viejo, graduating from Mission Viejo High School. Dr. Rawson attended Brigham Young University in Provo, Utah, where he received his Bachelor’s degree in Exercise Physiology. He received his medical degree from the Des Moines University College of Osteopathic Medicine in Iowa.
Dr. Rawson completed his residency training at Madigan Army Medical Center in Tacoma, Washington — part of the University of Washington Family Medicine Residency Network. The University of Washington School of Medicine has been identified as the nation’s top primary-care school in each of the last 18 years by US News & World Report and the top medical school in the country in family medicine and rural medicine training for the past 20 years.
Dr. Rawson was deployed to Afghanistan in 2012-2013, supporting Operation Enduring Freedom as the Squadron Surgeon for the 1st Squadron of the 4th Cavalry Regiment of the US Army. He is a fellow of the American Academy of Family Physicians, and Temecula Medical Group is one of the first direct care practices in the nation. He speaks both English and Spanish.
Dr. Rawson loves the Lakers, Cowboys, Angels, and Dodgers. He loves spending time with family and is driven not to waste a minute. He is forever grateful for the sacrifice of our men and women in uniform whose lives ended too soon and thankful for their gift of freedom. Dr. Rawson was honored with a Bronze Star for service while deployed with the 1st Squadron, 4th Cavalry Regiment to support Operation Enduring Freedom in Afghanistan. Causes he cares about include Wounded Marine and Operation Underground.
Dr. Richard Rawson, DO
Family Physician
27555 Ynez Road
Ste 102
Temecula, CA 92591
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
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.
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Dr. Douglas Wise, DO
Family Physician
40285 Winchester Road
Suite 103
Temecula, CA 92591
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
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
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