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Internist, Gastroenterologist (digestive), Hepatologist
35 years of experience
Accepting new patients
Video profile
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).

Patient Reviews

Patient comments (3)

The overall average patient rating of Dr. Joanne Imperial is Good. Dr. Imperial has been reviewed by 9 patients who have provided 3 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.1
Promptness 3.4
Courteous Staff 3.9
Accurate Diagnosis 4.2
Bedside Manner 4.2
Spends Time with Me 4.2
Follows Up After Visit 4.2

Specialties & Research

Dr. Joanne Imperial, MD is board certified in Internal Medicine and Gastroenterology.

  • She has special expertise in 9 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Chronic Hepatitis C
  • Constipation
  • Hepatitis C
  • Hepatocellular Carcinoma
  • Irritable Bowel Syndrome (IBS)
  • Liver Cirrhosis
  • Liver Transplantation
  • Ulcerative Colitis

Education & Awards

Dr. Imperial graduated from New York Medical College, Valhalla.


Dr. Imperial has 8 hospital affiliations:

  • California Pacific Medical Center - Davies Campus 
  • Stanford Hospital and Clinics 


  • Spanish
  • Croatian
  • French

> > > > Dr. Joanne Imperial, MD

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Additional Information
Dr. Joanne Carol Imperial MD is a female Internist, has 35 years of experience and practices in Internal Medicine, Gastroenterology, and Hepatology.
Where does Dr. Joanne C. Imperial practice?
Dr. Joanne Imperial has 3 office locations.
Dr. Joanne Imperial practices Internal Medicine, Gastroenterology, and Hepatology near Palo Alto, CA.
See Palo Alto Internists, Palo Alto Gastroenterologists, and Palo Alto Hepatologists.