Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John A Spera, MD

Individual provider Radiation Oncology Physician · NPI 1306831813

Dr. John A Spera, MD is a Radiation Oncology in Danbury, Connecticut. Graduated from Georgetown University School of Medicine in 1979, 47 years ago. Practices with Nuvance Health Medical Practice CT Inc, a 741-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
47
Trained at
Georgetown University School of Medicine
Licensed in
CT
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

24 Hospital Ave
Danbury, CT 06810-6099
Phone: (203) 797-7322
Fax: (203) 743-2610
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 027976 (CT)

Record details

NPI number1306831813
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 12, 2005
Last updated in NPPESSeptember 7, 2023
Mailing address2501 Oregon Pike, Suite 101, Lancaster, PA 17601-4890

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Nuvance Health Medical Practice Ct Inc — 741 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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