Catherine E. Oconnor, MD
Surgery Physician · Lewiston, ME
Catherine E. Oconnor, MD is a surgery physician with a practice address in Lewiston, Maine, and NPI 1134189434, issued on Mar 23, 2006. Check the license (Maine MD17051, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Catherine E. Oconnor
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- MD17051 ME
036158770 IL
76180 MA
60277802 NY
Self-reported in NPPES; status is on the state search - Practice location
- 99 Campus Ave., Suite 401, Lewiston, ME 04240
- Phone
- (207) 777-8650
- Enumerated
- Mar 23, 2006
- Record last updated
- Sep 29, 2025
- Fax
- (207) 777-8641
- Medicare enrollment
- Enrolled (PECOS I20211202002013); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 229 in Maine → Look up another NPI →
Verify Catherine E. Oconnor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD17051Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average surgery physician in 2024
21 Medicare Part D claims for 14 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 75.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Southern Illinois Medical Services NfpCarbondale, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine E. Oconnor among 229 surgery physician records in Maine
Catherine E. Oconnor, MD is one of 229 surgery physician records with a practice address in Maine. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1988 · median 2005 among the 121 with a school on file
- Record last updated2025 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 surgery physician records list a practice address in Lewiston
They are 22 of the 1,728 NPPES records with a practice address in Lewiston, and 229 surgery physician records in Maine.
All 229 in Maine → Every provider in Lewiston → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Justin Clark, D.O.Lewiston, ME 042401962480459
- Gregory D'Augustine, M.D.Lewiston, ME 042401093737553
- Nina Edwards, MD.Lewiston, ME 042401619961067
- Maria Ikossi, MDLewiston, ME 042401922184613
- Scott Johnson, MDLewiston, ME 042401104896133
- Jamie Loggins, MDLewiston, ME 042401346224003
- Thomas Moore, MDLewiston, ME 042401124097415
- Marsha O'Rourke, M.D.Lewiston, ME 042401043297146
Common questions
What is Catherine E. Oconnor, MD's NPI number?
Catherine E. Oconnor, MD's National Provider Identifier (NPI) is 1134189434, issued on Mar 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine E. Oconnor, MD located?
The NPPES record lists a practice address at 99 Campus Ave., Suite 401, Lewiston, ME, 04240. Phone: (207) 777-8650. Providers update this record themselves, so call before visiting.
How can I verify Catherine E. Oconnor, MD's license?
NPPES lists Maine license number MD17051, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine E. Oconnor, MD prescribe under Medicare Part D?
In 2024, Catherine E. Oconnor, MD had 21 Medicare Part D claims for 14 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Catherine E. Oconnor, MD's MIPS final score?
The 2023 MIPS final score is 75.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.