Physician Profile
Unclaimed ProfileAbout SPERA
John A Spera, M.D. practises radiation oncology in Danbury, CT. John is a 1979 graduate of Georgetown University School of Medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Spera specialise in?
Dr. Spera is a radiation oncology in Danbury, CT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RADIATION ONCOLOGY”.
NPI registry
Where is Dr. Spera located?
Dr. Spera is listed at 24 HOSPITAL AVE, Danbury, CT 06810. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Spera's phone number?
The number on file is (203) 797-7322. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Spera?
Dr. Spera's National Provider Identifier is 1306831813. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Spera go to medical school?
Dr. Spera attended Georgetown University School of Medicine, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Spera have?
Dr. Spera has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Spera do most often?
According to Medicare billing data, Dr. Spera performs imaging including ct guidance for insertion of radiation therapy fields and calculation of radiation therapy dose, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Spera's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Spera. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (203) 797-7322
- Email not available
Practice Locations
24 HOSPITAL AVE
Danbury, CT 06810
Procedures Most Often Billed to Medicare
2,006 services · 846 patients · 18 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
780 |
| Calculation of radiation therapy dose | Imaging | 77300 |
284 |
| Radiation treatment management, 5 treatment sessions | Imaging | 77427 |
215 |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
190 |
| Complex radiation therapy planning | Imaging | 77263 |
76 |
| Design and construction of radiation treatment device for high precision radiation therapy | Imaging | 77338 |
53 |
| High precision radiation therapy planning | Imaging | 77301 |
53 |
| Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | Imaging | 77280 |
39 |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | Imaging | 77290 |
35 |
| Special radiation treatment | Imaging | 77470 |
25 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Trained at Georgetown University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Georgetown University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ct guidance for insertion of radiation therapy fields 7
Providers in CT who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.