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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. Catharine Clark-Sayles:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Catharine Clark-Sayles is Excellent. Dr. Clark-Sayles has been reviewed by 15 patients who have provided 4 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.7
Promptness 4.0
Courteous Staff 4.4
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 4.9

Specialties & Research

Dr. Catharine Clark-Sayles, MD is board certified in Internal Medicine.

Education & Awards

Dr. Clark-Sayles graduated from University of Colorado, Denver. She has 5 awards.

American College of Physicians, Fellow
Top Doctor, San Francisco Magazine, multiple occassions
Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2010 - 2011, 2014 - 2015)
Compassionate Doctor Recognition (2011, 2014 - 2015)


Dr. Clark-Sayles has 2 hospital affiliations:

  • Marin General Hospital 
  • Kentfield Rehabilitation Hospital 


  • Spanish

> > > > Dr. Catharine Clark-Sayles, MD

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Additional Information
Dr. Catharine Teresa Clark-Sayles MD is a female Internist, has 33 years of experience and practices in Internal Medicine.
Where does Dr. Catharine T. Clark-Sayles practice?
Dr. Catharine Clark-Sayles has 1 office location.
Dr. Catharine Clark-Sayles practices Internal Medicine near Greenbrae, CA.
See Greenbrae Internists.