Catherine Oconnor, MD
NPI 1134189434 · Surgery Physician · Lewiston, ME
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Oconnor, MD is a Surgery Physician provider in Lewiston, ME (NPI 1134189434).
Provider details
- NPI number
- 1134189434
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 60277802 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
414 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 102 | $16 |
| Partial Removal of Breast19301 | 55 | $650 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 53 | $122 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 43 | $212 |
| Imaging of Lymph Nodes During Surgery38900 | 37 | $138 |
| Biopsy Or Removal of Deep Lymph Nodes of Underarm |
Practice location
Mailing address
Additional practice locations (1)
- 1237 E Main St Ste C1Carbondale, IL 62901-3148Phone: (618) 457-2281Fax: (618) 351-5625
Registry dates
- Enumerated
- 2006-03-23
- Last updated
- 2025-09-29
- Certified
- 2025-09-29
Frequently asked questions
- What is Catherine Oconnor's NPI number?
- Catherine Oconnor's National Provider Identifier (NPI) is 1134189434, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Oconnor's specialty?
- Catherine Oconnor is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Oconnor located?
- Catherine Oconnor's practice location on file with NPPES is 99 Campus Ave., Suite 401, Lewiston, ME 04240-6045.
- What is Catherine Oconnor's phone number?
- The practice phone number listed in the NPPES registry for Catherine Oconnor is (207) 777-8650.
- Does Catherine Oconnor accept Medicare?
- Catherine Oconnor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Oconnor's NPI active?
- Yes — Catherine Oconnor's NPI (1134189434) is active in the NPPES registry as of the last update on 2025-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.