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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. Daniel Brennan:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. Daniel Brennan is Excellent. Dr. Brennan has been reviewed by 5 patients who have provided 2 comments. The rating is 5 out of 5 stars.

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

Specialties & Research

Dr. Daniel Brennan, MD is board certified in Nephrology.

  • He has special expertise in 1 area:
  • Kidney Transplant (Renal Transplant)

Education & Awards

Dr. Brennan graduated from University of Iowa, Iowa City. He has 1 awards.

Castle Connolly America's Top Doctors® (2005 - 2008, 2010 - 2015)


Dr. Brennan has 2 hospital affiliations:

  • Barnes Jewish Hospital 
  • Missouri Baptist Hospital Sullivan 

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Additional Information
Dr. Daniel Conlon Brennan MD is a male Nephrologist, has 26 years of experience and practices in Nephrology.
Where does Dr. Daniel C. Brennan practice?
Dr. Daniel Brennan has 1 office location.
Dr. Daniel Brennan practices Nephrology near Saint Louis, MO.
See Saint Louis Nephrologists.