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Radiation Oncology, Radiologist, Oncology Specialist (cancer)
33 years of experience
Accepting new patients
Video profile
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 (1)

The overall average patient rating of Dr. John Spera is Good. Dr. Spera has been reviewed by 5 patients who have provided 1 comments. The rating is 4 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 3.7
Follows Up After Visit 5.0

Specialties & Research

Dr. John Spera, MD is board certified in Radiation Oncology.

  • He has special expertise in 4 areas:
  • Breast Cancer
  • Cancer
  • Metastatic Breast Cancer
  • Prostate Cancer (Prostatic Neoplasm)

Education & Awards

Dr. Spera graduated from Georgetown University, Washington. He has 3 awards.

Castle Connolly Top Doctors: New York Metro Area™ (1999 - 2008, 2010 - 2015)
Compassionate Doctor Recognition (2015)
On-Time Doctor Award (2015)


Dr. Spera has 4 hospital affiliations:

  • Danbury Hospital 
  • New Milford Hospital 


  • French
  • Spanish

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Additional Information
Dr. John A Spera MD is a male Radiation Oncologist, has 33 years of experience and practices in Radiation Oncology.
Where does Dr. John A. Spera practice?
Dr. John Spera has 1 office location.
Dr. John Spera practices Radiation Oncology near Danbury, CT.
See Danbury Radiation Oncologists.