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Summary
Dr. Jonathan Leff has practiced internal medicine, critical care medicine, and pediatrics for 42 years. He earned his medical degree from the Perelman School of Medicine at the University of Pennsylvania and sees patients in Simi Valley and Menlo Park, California.
Overview based on verified provider data
Quick Facts
- 42 years of experience
- University Of Pennsylvania School Of Medicine
- 4 specialties
- 3 areas of expertise
- 2 office locations
- Male
Office Locations
Dr. Jonathan Andrew Leff has 2 locationsCompare with Similar Doctors
 |  |  |  |
| Dr. Jonathan Andrew Leff, MD | Karthikeyan Viswanathan, DO | Dr. Adewumi Bakare DMSc, PA-C | Dr. Suma Oommen, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 42 Years of Experience | 12 Years of Experience | ||
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Tamil | Speaks English, Spanish, Yoruba, French, Russian, Arabic, Chinese, Chinese (Mandarin) | Speaks English | |
| Simi Valley , CA | Palo Alto , CA | Mesquite , TX | Lake Forest , CA |
| Med School: University Of Pennsylvania School Of Medicine | Med School: Bassett Medical Center - Cooperstown, New York | Med School: University of Lynchburg - DMSc | Med School: Christian Medical College, Vellore in India |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Jonathan Andrew Leff
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Jonathan Andrew Leff has the following 4 specialties
Specialty Expertise
Dr. Jonathan Andrew Leff has the following 3 areas of expertise
Certifications, License, & Education
42 Years Experience
Education & Training
Medical School
Graduated from University Of Pennsylvania School Of Medicine and Perelman School Of Medicine At University Of Pennsylvania in 1984.
NPI Number
Dr. Leff's NPI number is 1538407721.
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Frequently Asked Questions
- Where is Dr. Jonathan Leff's office located?
- Dr. Jonathan Leff's office is located at 678 Rustic Hills Dr, Simi Valley, CA, 93065.
- Does Dr. Jonathan Leff accept virtual/telehealth appointments?
- Dr. Jonathan Leff has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Is Dr. Jonathan Leff accepting new patients?
- Dr. Jonathan Leff has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- How can I make an appointment with Dr. Jonathan Leff?
- You can find contact information for Dr. Jonathan Leff here on Vitals.
- Does Dr. Jonathan Leff accept my insurance?
- You can see the insurance plans that Dr. Jonathan Leff accepts on their Vitals profile.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
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