Michael O'Sullivan, MD
NPI 1376981266 · Orthopaedic Surgery Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael O'Sullivan, MD is a Orthopaedic Surgery Physician provider in Springfield, MA (NPI 1376981266).
Provider details
- NPI number
- 1376981266
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 283812 (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
13 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
1,399 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 292 | $128 |
| X-Ray of Knee, 4 Or More Views73564 | 217 | $57 |
| X-Ray of Hip, 2-3 Views73502 | 216 | $47 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 175 | $73 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 149 | $90 |
| Replacement of Knee Joint, Both Sides of Knee27447 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 222 | 109 |
| Amoxicillin | 171 | 148 |
| Tramadol Hcl | 87 | 62 |
| Celecoxib | 43 | 26 |
| Oxycodone Hcl | 41 | 31 |
| Clindamycin Hcl | 36 | 31 |
| Diclofenac Sodium | 22 | — |
| Tizanidine Hcl | 17 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-13
- Last updated
- 2024-03-12
- Certified
- 2024-03-12
Frequently asked questions
- What is Michael O'Sullivan's NPI number?
- Michael O'Sullivan's National Provider Identifier (NPI) is 1376981266, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Sullivan's specialty?
- Michael O'Sullivan is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Michael O'Sullivan located?
- Michael O'Sullivan's practice location on file with NPPES is 300 Birnie Ave Ste 201, Springfield, MA 01107-1121.
- What is Michael O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Sullivan is (413) 785-4666.
- Does Michael O'Sullivan accept Medicare?
- Michael O'Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael O'Sullivan's NPI active?
- Yes — Michael O'Sullivan's NPI (1376981266) is active in the NPPES registry as of the last update on 2024-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.