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Raissa M. Hill, DO is a board-certified family medicine doctor with 25+ years of experience. As the founder of HT Family Physicians, a leading family medicine practice with locations in the cities of Stockton and Lodi, California, Dr. Hill provides a complete menu of primary care services to patients from the greater San Joaquin area.

Dr. Hill believes that listening — both to what patients say and what they don’t say — is an integral part of providing first-rate, personalized care. “Learning about patients, their lives, and offering advice, both clinical and personal, is what doctoring is for me,” she says.

Born in New York City and raised in Stockton, California, Dr. Hill obtained her undergraduate degree at the University of California at San Diego. Following a short stint as a molecular biologist with the Veteran’s Administration, she received her medical degree from the College of Osteopathic Medicine of the Pacific-Western University of Health Sciences in Pomona, California.

Dr. Hill went on to complete both her internship and her residency training at the University of California Davis San Joaquin General Hospital in Stockton, where she served as chief resident. After finishing her residency in 2000, she founded the family medicine practice that has since become HT Family Physicians.

Dr. Hill is a past President of the San Joaquin Medical Society. For her ongoing contribution to family medicine, the UC Davis Department of Family and Community Medicine selected Dr. Hill as its 2012 alumni of the year.

She is affiliated with Dameron Hospital / Advestist Health and  St. Joseph’s Medical Center / Dignity Health, both in Stockton, and Lodi Memorial Hospital / Adventist Health in Lodi.

Dr. Hill loves to travel with her husband and two adult children; she’s also an avid cook, enjoys jazzercise, and training her Cairn Terrier Ziggy.  She is also fluent in Spanish.

Dylia Pereira-Narvaez, MD is a board-certified family medicine specialist with 30+ years of experience. At HT Family Physicians, a first-rate family practice with locations in the cities of Stockton and Lodi, California, she provides comprehensive primary care services, including disease prevention, to patients in the greater San Joaquin area.

Dr. Pereira- Narvaez has a special interest in preventive medicine and is dedicated to giving her patients the tools they need to adopt and successfully maintain healthy lifestyle habits. Seeing her patients improve their overall health and avoid chronic disease gives her great satisfaction.

Dr. Pereira-Narvaez was born and raised in South Africa. After completing medical school in 1992 at the internationally acclaimed University of the Witwatersrand, she practiced medicine for several years in South Africa, England, and Canada.

After meeting her husband, then an active duty ophthalmologist with the US Air Force, Dr. Pereira-Narvaez moved to the United States and pursued her residency training at the University of California Davis family practice residency program at San Joaquin General Hospital, where she was chief resident.

Dr. Pereira-Narvaez went on to practice in Southern California for 10 years before her husband joined Delta Eye and her family relocated back to the Central Valley.

She is affiliated with Dameron Hospital / Adventist Health, and is also fluent in Spanish.

Together with their three children, Dr. Pereira-Narvaez and her husband enjoy hiking, camping in the great outdoors, and traveling.

Clyde Y. Wong, MD is a board-certified family medicine physician with over 40 years of experience. At HT Family Physicians, a renowned family practice with two locations in the cities of Stockton and Lodi, California, he offers a complete spectrum of health care services, including adolescent care and gynecology, to patients in the greater San Joaquin area.

As a doctor who emphasizes preventive care, Dr. Wong believes that regular checkups and health screenings, along with a collaborative relationship between doctor and patient, are the keys to obtaining and maintaining good health. He’s committed to providing high-quality medicine with compassion.

After growing up in the Central Valley of California, Dr. Wong attended the University of the Pacific in Stockton, where he graduated at the top of his class. He subsequently attended Stanford University School of Medicine, earning his medical degree in 1983.

He went on to complete his internship training at Cedars-Sinai Medical Center in Los Angeles, and his residency training in family medicine at Harbor-UCLA Medical Center in Torrance, California, where he served as a resident scholar.

Dr. Wong belongs to the American Academy of Family Physicians, California Academy of Family Physicians, American Medical Association, California Medical Association, San Joaquin Medical Society, Stanford Medical Alumni Association, and the Christian Medical Dental Association.

He’s affiliated with Doctor’s Medical Center of Modesto, Memorial Medical Center, and St. Joseph’s Medical Center / Dignity Health of Stockton.

Dr. Wong enjoys spending time with his wife and two adult children. He also enjoys playing basketball, fishing, and gardening, and is fluent in Cantonese.

Richelle G. Marasigan, DO is a board-certified family medicine doctor who has 10+ years of experience. She provides a full range of primary care services to patients from the greater San Joaquin area at HT Family Physicians, a long-serving family practice with two locations in the cities of Stockton and Lodi, California.

Dr. Marasigan understands that overall health depends on a combination of factors, and believes that patients who nurture the various aspects of their well-being are more likely to lead long, healthy lives. She strives to offer patients the support, expertise, and guidance they need to take an active role in their own health care.

Dr. Marasigan was born and raised in Stockton and obtained her undergraduate degree from Emory University in Atlanta. For all of her four years at Emory, she played on the women’s tennis team, leading the team to three Division III NCAA National Championships.

After receiving her medical degree from the College of Osteopathic Medicine-Touro University of Nevada in Henderson, Nevada, Dr. Marasigan returned to California to complete her internship and residency training at the University of California Irvine Regional Hospital and Medical Center. During her residency, she served as chief resident of the Family Medicine Program.

Dr. Marasigan is currently affiliated with Dameron Hospital / Adventist Health and St. Joseph’s Medical Center / Dignity Health both in Stockton.

In addition to spending as much time as possible with her two young sons, Dr. Marasigan continues to play tennis, enjoys jazzercise, cooking and baking, bread especially, and travels whenever she can.

San Tso, DO is a board-certified family medicine doctor with 25+ years of experience. At HT Family Physicians, a top-rated family medicine practice with two locations in the cities of Stockton and Lodi, California, Dr. Tso provides a full scope of primary care services to patients from the greater San Joaquin area.

As a preventive care specialist, Dr. Tso enjoys educating, motivating, and empowering her patients to make the kind of healthy lifestyle choices that promote long-term wellness. “I work with patients to achieve their best health, no matter their stage in life,” she says. “I believe all patients should have an expectation of health, and I enjoy partnering with them to achieve it.”

Born in New York, Dr. Tso grew up in Fremont, California. She received her undergraduate degree from San Jose State University, in San Jose, California. After a short stint working as a biologist at a biotech company in Silicon Valley, she enrolled in medical school at Western University of Health Sciences, College of Osteopathic Medicine of the Pacific, in Pomona, California; she received her medical degree in 1997.

Dr. Tso went on to complete her internship and family medicine residency training in Stockton, California as part of the University of California Davis family practice residency program at San Joaquin General Hospital, where she served as chief resident.

After practicing as a family physician in Eureka, California for several years, Dr. Tso joined HT Family Physicians in 2004. She’s affiliated with Dameron Hospital / Adventist Health and St. Joseph’s Medical Center / Dignity Health both in Stockton, and Lodi Memorial Hospital / Adventist Health in Lodi.  Dr. Tso is fluent in Mandarin.

Dr. Tso loves spending time, especially outdoors, with her husband and two adult children. She’s fluent in Mandarin and enjoys running, working out on the Stairmaster, and all things Hollywood.

Raissa M. Hill, DO is a board-certified family medicine doctor with 25+ years of experience. As the founder of HT Family Physicians, a leading family medicine practice with locations in the cities of Stockton and Lodi, California, Dr. Hill provides a complete menu of primary care services to patients from the greater San Joaquin area.

Dr. Hill believes that listening — both to what patients say and what they don’t say — is an integral part of providing first-rate, personalized care. “Learning about patients, their lives, and offering advice, both clinical and personal, is what doctoring is for me,” she says.

Born in New York City and raised in Stockton, California, Dr. Hill obtained her undergraduate degree at the University of California at San Diego. Following a short stint as a molecular biologist with the Veteran’s Administration, she received her medical degree from the College of Osteopathic Medicine of the Pacific-Western University of Health Sciences in Pomona, California.

Dr. Hill went on to complete both her internship and her residency training at the University of California Davis San Joaquin General Hospital in Stockton, where she served as chief resident. After finishing her residency in 2000, she founded the family medicine practice that has since become HT Family Physicians.

Dr. Hill is a past President of the San Joaquin Medical Society. For her ongoing contribution to family medicine, the UC Davis Department of Family and Community Medicine selected Dr. Hill as its 2012 alumni of the year.

She is affiliated with Dameron Hospital / Advestist Health and  St. Joseph’s Medical Center / Dignity Health, both in Stockton, and Lodi Memorial Hospital / Adventist Health in Lodi.

Dr. Hill loves to travel with her husband and two adult children; she’s also an avid cook, enjoys jazzercise, and training her Cairn Terrier Ziggy.  She is also fluent in Spanish.

San Tso, DO is a board-certified family medicine doctor with 25+ years of experience. At HT Family Physicians, a top-rated family medicine practice with two locations in the cities of Stockton and Lodi, California, Dr. Tso provides a full scope of primary care services to patients from the greater San Joaquin area.

As a preventive care specialist, Dr. Tso enjoys educating, motivating, and empowering her patients to make the kind of healthy lifestyle choices that promote long-term wellness. “I work with patients to achieve their best health, no matter their stage in life,” she says. “I believe all patients should have an expectation of health, and I enjoy partnering with them to achieve it.”

Born in New York, Dr. Tso grew up in Fremont, California. She received her undergraduate degree from San Jose State University, in San Jose, California. After a short stint working as a biologist at a biotech company in Silicon Valley, she enrolled in medical school at Western University of Health Sciences, College of Osteopathic Medicine of the Pacific, in Pomona, California; she received her medical degree in 1997.

Dr. Tso went on to complete her internship and family medicine residency training in Stockton, California as part of the University of California Davis family practice residency program at San Joaquin General Hospital, where she served as chief resident.

After practicing as a family physician in Eureka, California for several years, Dr. Tso joined HT Family Physicians in 2004. She’s affiliated with Dameron Hospital / Adventist Health and St. Joseph’s Medical Center / Dignity Health both in Stockton, and Lodi Memorial Hospital / Adventist Health in Lodi.  Dr. Tso is fluent in Mandarin.

Dr. Tso loves spending time, especially outdoors, with her husband and two adult children. She’s fluent in Mandarin and enjoys running, working out on the Stairmaster, and all things Hollywood.

Richelle G. Marasigan, DO is a board-certified family medicine doctor who has 10+ years of experience. She provides a full range of primary care services to patients from the greater San Joaquin area at HT Family Physicians, a long-serving family practice with two locations in the cities of Stockton and Lodi, California.

Dr. Marasigan understands that overall health depends on a combination of factors, and believes that patients who nurture the various aspects of their well-being are more likely to lead long, healthy lives. She strives to offer patients the support, expertise, and guidance they need to take an active role in their own health care.

Dr. Marasigan was born and raised in Stockton and obtained her undergraduate degree from Emory University in Atlanta. For all of her four years at Emory, she played on the women’s tennis team, leading the team to three Division III NCAA National Championships.

After receiving her medical degree from the College of Osteopathic Medicine-Touro University of Nevada in Henderson, Nevada, Dr. Marasigan returned to California to complete her internship and residency training at the University of California Irvine Regional Hospital and Medical Center. During her residency, she served as chief resident of the Family Medicine Program.

Dr. Marasigan is currently affiliated with Dameron Hospital / Adventist Health and St. Joseph’s Medical Center / Dignity Health both in Stockton.

In addition to spending as much time as possible with her two young sons, Dr. Marasigan continues to play tennis, enjoys jazzercise, cooking and baking, bread especially, and travels whenever she can.

Shiva Mohtashami, MD, is a board-certified family practitioner who welcomes patients of all ages to her private practice in Morgan Hill, California. As a primary care provider, Dr. Mohtashami welcomes individuals and families alike to receive consistent, up-to-date medical care. She prioritizes prevention while also offering sick visits, chronic illness management, and mental health care. 

Dr. Mohtashami attended the University of British Columbia in Vancouver, Canada, before attending medical school at the American University of the Caribbean School of Medicine in Simpson Bay, Sint Maarten. She then completed a family medicine residency at the Medical College of Wisconsin in Milwaukee, Wisconsin, earning an academic achievement award. 

At her private practice, Dr. Mohtashami emphasizes the importance of annual checkups, pediatric physicals, and geriatric medicine. She also provides women’s health care and treats acute and chronic diseases, including obesity, heart disease, stroke, arthritis, lung disease, and nutrient deficiencies. 

When she’s away from the office, Dr. Mohtashami enjoys swimming, hiking, and spending time with her family. 

Daisy Manuel-Arguelles, DO, is a family medicine specialist with a passion for improving health outcomes for patients of all ages. Through her private practice in Sonoma, California, Dr. Manuel-Arguelles is honored to play a role in helping families make the most of each and every day.

Dr. Manuel-Arguelles views education as a means of enhancing her own life while also enabling her to assist others. She completed her medical education at New York College of Osteopathic Medicine. Since that time, Dr. Manuel-Arguelles has pursued numerous opportunities to expand her skills and knowledge through continuing education and training events.

As a family medicine specialist, Dr. Manuel-Arguelles is trained to provide a wide range of medical services to patients of all ages. She brings more than two decades of experience to that role.

Dr. Manuel-Arguelles takes the time to build a trusting relationship with you and your family, and guides your care with an understanding of your family’s unique strengths and challenges. That approach helps deliver far better health outcomes than simply coming in only when there’s an illness or injury.

Dr. Manuel-Arguelles has also recruited an excellent support team. You’ll feel welcomed and supported during each interaction, whether it’s with nursing staff or administrative professionals.

Dr. Manuel-Arguelles believes that making time for routine wellness checks and preventive care is a critical part of keeping you and your loved ones happy and healthy. It’s also a great way to teach kids to prioritize their own health, and to view their doctor as a partner in helping them thrive. Those are lessons that can last a lifetime, and be handed down to future generations.

If you’re searching for a new family doctor, schedule an appointment to come in and sit down with Dr. Manuel-Arguelles to discuss your health needs and goals. Dr. Manuel-Arguelles is currently accepting new patients, and would love to welcome you as a new member of her practice family.