John Leong, DO
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I speak: English
My gender: Male
Where I practice
- Emergency service
- Urgent care services
- After-hours services
- Pharmacy services
- No emergency services
- No urgent care services
- No after-hours services
- No pharmacy services
About me
Hello! Welcome to my Web page. My name is Dr. John Leong, and I am an internal medicine doctor and a geriatrician working for Kaiser Permanente. It is a great opportunity to introduce myself. I grew up in Macau, a city known as the gambling hub and Las Vegas of Asia. Being a former colony of Portugal, it is also a place that embraces both Chinese and Portuguese cultures. Growing up in the care of my grandparents, I have always had a special bond with seniors. To me, they represent wisdom, yet they are also a vulnerable population. Becoming a geriatrician was a way for me to pay back the population that taught me so much with their experience and wisdom.
Biography
I completed my bachelor’s degree of biological science at UC Irvine and went to medical school at Midwestern University in Arizona. I then joined the Kaiser Permanente family as a resident and completed my internal medicine training at Fontana Medical Center. After residency, I went back to UC Irvine, where I completed my fellowship in geriatric medicine, I am proud to be back at Fontana Medical Center, which I consider my home facility, as an attending geriatrician.
About my practice
During and throughout my medical education, training, and practice, I developed interest and skills in various fields including the diagnosis and care for memory disorders, long-term care patient management, and comprehensive health assessment programs. As a geriatrician, I would like to focus on these areas while exploring other new fields of geriatrics.
How I thrive
During my free time, I enjoy various activities for my physical wellness: hiking, day camping, badminton, and tennis. When at home, I like to cook and sometimes attempt new recipes. I enjoy herb gardening with my hydroponic system and caring for my young bonsai trees such as a jacaranda, Yoshino cherry blossom, and blue moon wisteria.
My office
Languages spoken by medical staff
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My provider type
Physicians and SurgeonsMedical groups, plans, and locations
Southern California Permanente Medical Group
Plans accepted
- Exclusive Provider Organization (EPO)
- HMO
- Medi-Cal Managed Care
- Point-of-Service Plan (POS)
- Senior Advantage
Fontana Medical Center
Contact information
- Appointments/information
- 1-833-574-2273 (toll free)
- Information
- 1-866-735-2922 (toll-free TTY for the hearing/speech impaired)
My training, certifications and licensing
Medical school
Midwestern University College of Osteopathic MedicineBoard certification
Geriatric Medicine
American Board of Internal MedicineInternal Medicine
American Board of Internal MedicineMedical training
Fellowship
Geriatric Medicine
University of California Irvine, Dept. of Family MedicineInternship
Internal Medicine
Kaiser Foundation HospitalResidency
Internal Medicine
Kaiser Foundation HospitalJoined Permanente Medical Group
2022Active license information
License number
20A18354License type
Osteopathic Physician and SurgeonLicense issuing state
CALIFORNIANational Provider Identifier (NPI)
1851896773Cultural Competency Training (CCT)
CompletedMy hospitals
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This page was last updated on: 02/23/2025