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Edit this profileWhere to find Catherine E. Oconnor, MD
- Lewiston location main office
99 Campus Ave., Suite 401, St Mary's Surgical Associates, Lewiston, ME 04240 - Carbondale location
1237 E Main St Ste C1, Carbondale, IL 62901
About Dr. Oconnor
Based in Lewiston, ME, Catherine E. Oconnor, MD is listed in the NPI registry under surgery. According to Medicare claims data, Catherine cared for 375 Medicare patients across 414 services. The services billed most often include 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', partial removal of breast, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1134189434 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (207) 777-8650
- Email not available
Practice Locations
99 CAMPUS AVE., SUITE 401 ST MARY'S SURGICAL ASSOCIATES
Lewiston, ME 04240
1237 E Main St Ste C1
Carbondale, IL 62901
Conditions Commonly Evaluated or Treated
Within Surgery (Unspecified) generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Breast conditions
Cancer
- Colon cancer
- Esophageal cancer
- Liver cancer
- Neuroendocrine Tumors
- Pancreatic cancer
- Soft-tissue sarcoma
- Stomach cancer
- Thyroid cancer
Colorectal
Digestive
- Abdominal adhesions
- Acid reflux
- Acute pancreatitis
- Bowel obstruction
- Colon polyps
- Diverticulitis
- Gastroparesis
- Peptic ulcer disease
Digestive & blood
Digestive health
- Crohn's disease
- Fecal incontinence
- Perforated bowel
- Severe chronic constipation
- Swallowing difficulties
- Ulcerative colitis
Endocrine
Infections
Lumps & bumps
Lymphatic
Minor surgery
Skin & scars
Skin & soft tissue
Skin cancer
Vascular
Weight & metabolism
Wound care
Wounds
Procedures & services
Endocrine
Vascular
- Blood Clot Removal Surgery
- Carotid endarterectomy
- Leg bypass surgery
- Varicose vein removal
Wounds
Most searched procedures
Abdominal
Abdominal surgery
Bariatric
Breast surgery
Cancer
Cancer surgery
Colorectal
- Anal fistula surgery
- Anal Sphincter Repair
- Colon resection
- Hemorrhoid removal
- Ostomy reversal
- Ostomy surgery
- Rectal prolapse repair
- Surgery for chronic anal fissure
Consultations
Diagnostic
Digestive
Digestive health
Infections
Minor surgery
- Fishhook or embedded splinter removal
- Ingrown toenail removal
Post-op care
Reconstruction
Skin & soft tissue
- Cyst Removal
- Lipoma removal
- Mole removal
- Pilonidal cyst surgery
- Scar revision surgery
- Skin Tag Removal
Skin cancer
Vascular & cancer
Weight loss
Wound care
Procedures Most Often Billed to Medicare
414 services · 375 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Partial removal of breast | Procedure | 19301 |
55 | More than most peers in Surgery |
| Imaging of lymph nodes during surgery | Procedure | 38900 |
37 | More than most peers in Surgery |
| Biopsy or removal of deep lymph nodes of underarm | Procedure | 38525 |
36 | More than most peers in Surgery |
| Simple complete removal of breast | Procedure | 19303 |
11 | Less often than most peers in Surgery |
| 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' | Billing code | G2211 |
102 | More often than most peers in Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
53 | More often than most peers in Surgery |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
43 | More often than most peers in Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
29 | As often as other peers in Surgery |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
21 | As often as other peers in Surgery |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
16 | Less often than most peers in Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other general surgeons at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 26 related providers in 4 groups
Other general surgeons in Lewiston 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Partial removal of breast 3
Providers in ME who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Oconnor?
Dr. Oconnor is a general surgeon in Lewiston, ME. That is the designation recorded for this NPI in the federal registry, where it is listed as “Surgery”.
NPI registry
What is Dr. Oconnor's address?
Dr. Oconnor is listed at 99 Campus Ave., Suite 401 St Mary's Surgical Associates, Lewiston, ME 04240. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Oconnor?
The number on file is (207) 777-8650. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Oconnor's NPI number?
Dr. Oconnor's National Provider Identifier is 1134189434. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Oconnor train?
Dr. Oconnor attended Other, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Oconnor been practicing?
Dr. Oconnor has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Oconnor perform?
According to Medicare billing data, Dr. Oconnor performs procedures including partial removal of breast, imaging of lymph nodes during surgery and biopsy or removal of deep lymph nodes of underarm, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Oconnor confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Oconnor. If this is you, claiming it is free.
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