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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).

Patient Reviews

Patient comments (10)

The overall average patient rating of Dr. Robert Butler, Internist, Emergency Physician is Excellent. Dr. Butler has been reviewed by 21 patients who have provided 10 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.7
Promptness 4.6
Courteous Staff 4.7
Accurate Diagnosis 4.7
Bedside Manner 4.8
Spends Time with Me 4.7
Follows Up After Visit 4.6

Specialties & Research

Dr. Robert Butler, MD is board certified in Internal Medicine.

  • He has special expertise in 2 areas:
  • Preventive Medicine
  • Weight Loss

Education & Awards

Dr. Butler graduated from Northwestern University, Chicago. He has 2 awards.

Patients' Choice Award (2008 - 2009, 2011 - 2014)
Compassionate Doctor Recognition (2011 - 2014)


Dr. Butler has 2 hospital affiliations:

  • Mercy Medical Center, Merced - Community Campus 
  • Mercy Medical Center Merced 


  • Spanish

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Additional Information
Dr. Robert Joseph Butler MD is a male Internist, has 29 years of experience and practices in Internal Medicine.
Where does Dr. Robert J. Butler practice?
Dr. Robert Butler has 1 office location.
Dr. Robert Butler practices Internal Medicine near Merced, CA.
See Merced Internists.