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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 (2)

The overall average patient rating of Dr. Thomas O'Brien is Good. Dr. O'Brien has been reviewed by 11 patients who have provided 2 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.4
Promptness 3.9
Courteous Staff 4.2
Accurate Diagnosis 5.0
Bedside Manner 4.8
Spends Time with Me 4.8
Follows Up After Visit 4.0

Specialties & Research

Dr. Thomas O'Brien, MD is board certified in Internal Medicine.

  • He has special expertise in 2 areas:
  • Asthma
  • Lumbar Degenerative Disc Disease

Education & Awards

Dr. O'Brien graduated from Drexel University , Philadelphia. He has 4 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2013 - 2014)
Compassionate Doctor Recognition (2013 - 2014)
On-Time Doctor Award (2014)


Dr. O'Brien has 17 hospital affiliations:

  • Florida Hospital 
  • Arnold Palmer Medical Center 


  • Creole
  • English
  • Spanish

> > > > Dr. Thomas O'Brien, MD

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Additional Information
Dr. Thomas W O'Brien MD is a male Internist, has 31 years of experience and practices in Internal Medicine and Pulmonary Disease.
Where does Dr. Thomas W. O'Brien practice?
Dr. Thomas O'Brien has 7 office locations.
Dr. Thomas O'Brien practices Internal Medicine and Pulmonary Disease near Davenport, FL.
Additional practice locations include: Kissimmee, FL and Clermont, FL.
See Davenport Internists and Davenport Pulmonologists.