Stephen O'Connor, MD
NPI 1427083237 · Diagnostic Radiology Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen O'Connor, MD is a Diagnostic Radiology Physician provider in Springfield, MA (NPI 1427083237).
Provider details
- NPI number
- 1427083237
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 078444 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,628 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 289 | $8 |
| X-Ray of Chest, 2 Views71046 | 283 | $10 |
| Ct Scan Head Or Brain Without Contrast70450 | 116 | $39 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 105 | $86 |
| Low Dose Ct Scan of Chest for Lung Cancer Screening71271 | 67 | $51 |
| X-Ray of Foot, Minimum of 3 Views73630 | 57 | $8 |
| Ct Scan of Upper Spine Without Contrast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Stephen O'Connor's NPI number?
- Stephen O'Connor's National Provider Identifier (NPI) is 1427083237, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen O'Connor's specialty?
- Stephen O'Connor is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen O'Connor located?
- Stephen O'Connor's practice location on file with NPPES is 759 Chestnut St, Springfield, MA 01107-1619.
- What is Stephen O'Connor's phone number?
- The practice phone number listed in the NPPES registry for Stephen O'Connor is (413) 827-7426.
- Does Stephen O'Connor accept Medicare?
- Stephen O'Connor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen O'Connor's NPI active?
- Yes — Stephen O'Connor's NPI (1427083237) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.