Skip to main content
Life-threatening emergency? Call 911
Member Services: (951) 791-1111
Enrollment Information: (951) 390-2840
John Schoonmaker, DO

John Schoonmaker, DO

Family Medicine

Geriatric Medicine · Women's Health

Accepting New Patients Physician (MD/DO)
(951) 679-7022
Sun City, CA, 92586

Office Location

29826 Haun Road, Suite 300
Sun City, CA, 92586
Valley Medical Center, Sun City, CA →

At a Glance

Provider Type Physician (MD/DO)
Primary Specialty Family Medicine
Additional Specialties Geriatric Medicine, Women's Health
Languages English, Spanish
Gender Male

About

Dr. John Schoonmaker, DO, is a board-certified Family Medicine physician specializing in Family Medicine, Geriatric Medicine, and Women's Health. He practices at his clinic in Menifee, California, where he has been providing comprehensive medical care to patients and families for over 25 years.

Dr. Schoonmaker earned his Doctor of Osteopathic Medicine degree from Western University of Health Sciences College of Osteopathic Medicine of the Pacific in 1996. He completed his transitional year internship at Arrowhead Regional Medical Center from 1996-1997, followed by his Family Medicine residency at the same institution from 1998-2000. His medical training has equipped him with expertise in osteopathic principles and whole-person healthcare.

As a board-certified physician with the American Osteopathic Board of Family Physicians, Dr. Schoonmaker maintains active memberships with the American College of Osteopathic Family Physicians and holds certifications in Advanced Cardiovascular Life Support (ACLS) and Pediatric Advanced Life Support (PALS). He is affiliated with Southwest Healthcare System and Rancho Springs Medical Center, providing his patients with access to comprehensive hospital services when needed.

Dr. Schoonmaker's practice philosophy centers on whole-person healthcare, considering his patients' mental, physical, emotional, spiritual, and social needs. He specializes in treating conditions such as diabetes, hypertension, bronchitis, and chronic conditions common in geriatric and women's health populations. His approach emphasizes preventive care and building strong patient relationships through active listening and clear communication. Dr. Schoonmaker is currently accepting new patients and is fluent in both English and Spanish.

Conditions Treated

Bronchitis Chronic Hypertension Diabetes Diabetes Type 2 in Children and Teens High blood pressure High Blood Sugar Emergency High Blood Sugar in Children Hypertension Joint Pain Obesity Obesity and Overweight

Procedures Performed

Manual Therapy Physical Therapy Strength Training Thyroid Hormone Tests Thyroxine (T4) Test White Blood Cell Differential

Affiliated Organization

Valley Medical Center — Primary

Where John Schoonmaker, DO Practices

Other Providers You Might See