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Summary
Dr. Ronald Spier sees patients at Loma Linda University Children's Hospital, where he practices internal medicine. He treats hypertensive emergency, hypertension, and type 2 diabetes mellitus, and performs comprehensive metabolic panel testing and diabetic nephropathy screening. He completed his residency at Loma Linda University Medical Center and sees patients in Fontana, California.
Overview based on verified provider data
Quick Facts
- 17 years of experience
- 46 insurance plans accepted
- Loma Linda University Medical Center
- 1 specialty
- 6 areas of expertise
- 1 hospital affiliation
- 1 office location
- Male
Office Location
Compare with Similar Doctors
 |  |  |  |
| Dr. Ronald A Spier, DO | Karthikeyan Viswanathan, DO | Dr. Adama Diarra, DO | Dr. Argenis Curiel, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 17 Years of Experience | 12 Years of Experience | 14 Years of Experience | 8 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Tamil | Speaks English, French, Bambara | Speaks English, Spanish | |
| Fontana , CA | Palo Alto , CA | Tigard , OR | Fresno , CA |
| Med School: Western Univ Health Sci College Of Osteopathic Medicine Of The Pacific | Med School: Bassett Medical Center - Cooperstown, New York | Med School: Arizona College of Osteopathic Medicine | Med School: Universidad Autonoma De Guadalajara Facultad De Medicina |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Ronald A Spier
Medical Specialties
Dr. Ronald A Spier has the following specialty
Specialty Expertise
Dr. Ronald A Spier has the following 6 areas of expertise
Certifications, License, & Education
17 Years Experience
Dr. Ronald A Spier holds an active medical license in the state of California.
Medical License
Doctor Of Osteopathy with an active medical license in the state of California that expired in 2026.
Education & Training
Residency
Completed their residency at Loma Linda University Medical Center.
Medical School
Graduated from Western Univ Health Sci College Of Osteopathic Medicine Of The Pacific in 2009.
NPI Number
Dr. Spier's NPI number is 1124261631.
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Frequently Asked Questions
- Does Dr. Ronald Spier accept virtual/telehealth appointments?
- Dr. Ronald Spier has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Dr. Ronald Spier affiliated with?
- Dr. Ronald Spier is affiliated with Loma Linda University Childrens Hospital.
- Does Dr. Ronald Spier accept my insurance?
- You can see the insurance plans that Dr. Ronald Spier accepts on their Vitals profile.
- Is Dr. Ronald Spier accepting new patients?
- Dr. Ronald Spier has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Where is Dr. Ronald Spier's office located?
- Dr. Ronald Spier's office is located at 9961 Sierra Ave, Fontana, CA, 92335.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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