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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 (6)

The overall average patient rating of Dr. John Wassenaar is Excellent. Dr. Wassenaar has been reviewed by 14 patients who have provided 6 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.8
Promptness 4.7
Courteous Staff 4.9
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 4.8

Specialties & Research

Dr. John Wassenaar, MD is board certified in Internal Medicine and Pediatrics.

Education & Awards

Dr. Wassenaar graduated from University of Florida, Gainesville. He has 8 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice 5th Anniversary Award (2014)
Patients' Choice Award (2010 - 2014)
Compassionate Doctor Award - 5 Year Honoree (2014)
Compassionate Doctor Recognition (2010 - 2014)
Bridges to Excellence Recognition
Bridges to Excellence Medical Home Recognition (2013 - 2016)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2013 - 2016)
On-Time Doctor Award (2014)


Dr. Wassenaar has 3 hospital affiliations:

  • Sarasota Memorial Hospital 
  • Bon Secours - Venice Hospital 
  • Venice Regional Medical Center 

> > > > Dr. John Wassenaar, MD

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Additional Information
Dr. John W Wassenaar MD is a male Internist, has 26 years of experience and practices in Internal Medicine and Pediatrics.
Where does Dr. John W. Wassenaar practice?
Dr. John Wassenaar has 2 office locations.
Dr. John Wassenaar practices Internal Medicine and Pediatrics near Osprey, FL.
Additional practice locations include: Venice, FL.
See Osprey Internists and Osprey Pediatricians.