Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Catherine E Oconnor, MD

Individual provider Surgery Physician · NPI 1134189434

Catherine E Oconnor, MD is a General Surgery in Lewiston, Maine. Qualified in 1988, 38 years ago. Practices with Southern Illinois Medical Services Nfp, a 332-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois, Massachusetts, Maine and New York.

Years since qualifying
38
Licensed in
IL, MA, ME, NY
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

99 Campus Ave Ste 401 ST Mary's Surgical Associates
Lewiston, ME 04240-6045
Phone: (207) 777-8650
Fax: (207) 777-8641
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1237 E Main St Ste C1, Carbondale, IL 62901-3148 — (618) 457-2281

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence MD17051 (ME)
Surgery Physician Taxonomy 208600000X · Licence 60277802 (NY)
Surgery Physician Taxonomy 208600000X · Licence 76180 (MA)
Surgery Physician Taxonomy 208600000X · Licence 036158770 (IL)

Record details

NPI number1134189434
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 23, 2006
Last updated in NPPESSeptember 29, 2025
Certification dateSeptember 29, 2025
Mailing addressPo Box 7291, Lewiston, ME 04243-7291

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Southern Illinois Medical Services Nfp — 332 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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