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Summary
Dr. John Leong treats Alzheimer's disease, cognitive impairment, and dementia as part of his geriatric medicine practice. He is affiliated with Kaiser Foundation Hospital in Fontana, California.
Overview based on verified provider data
Quick Facts
- 1 specialty
- 1 area of expertise
- 1 hospital affiliation
- 1 office location
- Male
Office Location
Compare with Similar Doctors
 |  | |  |
| Dr. John Leong, DO | Dr. Dr. Karanbir Brar | Dr. Juanito Medrano Garlitos, MD | Dr. Ecler Ercole Jaqua, MD |
| Geriatric Medicine | Geriatric Medicine | Geriatric Medicine | Geriatric Medicine |
| Accepts New Patients | Accepts New Patients | ||
| 16 Years of Experience | 48 Years of Experience | 20 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English, Punjabi, Spanish | Speaks English | ||
| Fontana , CA | Oceanside , CA | Fontana , CA | Loma Linda , CA |
| Med School: Ross University School Of Medicine | Med School: University Of Santo Tomas Faculty Of Medicine And Surgery | Med School: Universidade Luterana Do Brasil (Ulbra) Faculdade De Medicina | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. John Leong
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. John Leong has the following specialty
Specialty Expertise
Dr. John Leong has the following area of expertise
Certifications, License, & Education
Dr. John Leong holds an expired medical license in the state of California.
Medical License
Doctor Of Osteopathy with an expired medical license in the state of California that expired in 2026.
NPI Number
Dr. Leong's NPI number is 1851896773.
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Frequently Asked Questions
- Where is Dr. John Leong's office located?
- Dr. John Leong's office is located at 9961 Sierra Ave, Fontana, CA, 92335.
- Which hospitals is Dr. John Leong affiliated with?
- Dr. John Leong is affiliated with Kaiser Foundation Hospital.
- Is Dr. John Leong accepting new patients?
- Dr. John Leong has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. John Leong accept my insurance?
- You can see the insurance plans that Dr. John Leong accepts on their Vitals profile.
- Does Dr. John Leong accept virtual/telehealth appointments?
- Dr. John Leong has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- Healthcare system and provider network data
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