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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. Warren Ferris:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Warren Ferris is Good. Dr. Ferris has been reviewed by 4 patients who have provided 0 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.3
Promptness 4.3
Courteous Staff 4.3
Accurate Diagnosis 3.0
Bedside Manner 3.0
Spends Time with Me 3.0
Follows Up After Visit 2.5

Specialties & Research

Dr. Warren Ferris, MD is board certified in Internal Medicine and Rheumatology.

  • He has special expertise in 6 areas:
  • Arthritis
  • Hip Osteoarthritis
  • Knee Osteoarthritis
  • Osteoarthritis (Hand and Wrist)
  • Rheumatic Diseases
  • Rheumatoid Arthritis

Education & Awards

Dr. Ferris graduated from Columbia University, New York. He has 3 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Bridges to Excellence Recognition
Physician Office Systems Recognition (2014 - 2016)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2014 - 2017)


Dr. Ferris has 1 hospital affiliations:

  • Montgomery General Hospital Inc 


  • English

> > > > Dr. Warren Ferris, MD

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Additional Information
Dr. Warren Orrin Ferris MD is a male Internist, has 36 years of experience and practices in Internal Medicine and Rheumatology.
Where does Dr. Warren O. Ferris practice?
Dr. Warren Ferris has 1 office location.
Dr. Warren Ferris practices Internal Medicine and Rheumatology near Silver Spring, MD.
See Silver Spring Internists and Silver Spring Rheumatologists.