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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Jennifer Knowles:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. Jennifer Knowles is Average. Dr. Knowles has been reviewed by 3 patients who have provided 1 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 3.0
Promptness 3.0
Courteous Staff 1.7
Accurate Diagnosis 1.0
Bedside Manner 1.7
Spends Time with Me 1.7
Follows Up After Visit 2.3

Specialties & Research

Dr. Jennifer Knowles, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • She has special expertise in 5 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Unstable Angina

Education & Awards

Dr. Knowles graduated from University of Tennessee, Memphis.


Dr. Knowles has 6 hospital affiliations:

  • St. Joseph Hospital - Orange 
  • Kaiser Permanente Fontana Medical Center 

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Additional Information
Dr. Jennifer Sue Knowles MD is a female Internist, has 32 years of experience and practices in Internal Medicine and Cardiovascular Disease.
Where does Dr. Jennifer S. Knowles practice?
Dr. Jennifer Knowles has 1 office location.
Dr. Jennifer Knowles practices Internal Medicine and Cardiovascular Disease near Fontana, CA.
See Fontana Internists and Fontana Cardiologists.