John O'Connor, M.D.
NPI 1295988921 · Anesthesiology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John O'Connor, M.D. is a Anesthesiology Physician provider in Worcester, MA (NPI 1295988921).
Provider details
- NPI number
- 1295988921
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 238964 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
376 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) |
|---|---|---|
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 62 | $53 |
| Ultrasonic Guidance for Needle Placement76942 | 40 | $30 |
| Injection of Anesthetic Agent And/Or Steroid Into Arm Nerve Bundle (brachial Plexus)64415 | 25 | $68 |
| Anesthesia for Retinal Surgery00145 | 24 | $119 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 22 | $178 |
| Anesthesia for Other Procedure on Top of Arm Bone and Shoulder Joint01630 | 21 | $116 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-10-26
- Last updated
- 2009-10-08
Frequently asked questions
- What is John O'Connor's NPI number?
- John O'Connor's National Provider Identifier (NPI) is 1295988921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John O'Connor's specialty?
- John O'Connor is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John O'Connor located?
- John O'Connor's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is John O'Connor's phone number?
- The practice phone number listed in the NPPES registry for John O'Connor is (508) 334-3271.
- Does John O'Connor accept Medicare?
- John 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 John O'Connor's NPI active?
- Yes — John O'Connor's NPI (1295988921) is active in the NPPES registry as of the last update on 2009-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.