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Edit this profileAt a glance
- 100 Theda Clark Medical Plz, Suite 400, Neenah, WI 54956
About Dr. Brennan
Patrick J. Brennan, M.D. is a healthcare provider in Neenah, WI specializing in general surgery. Patrick trained at University of Wisconsin School of Medicine, graduating in 1997. Patrick is also listed as specializing in surgery, surgical critical care, and trauma surgery. Medicare claims data shows Patrick provided 171 services to 138 patients. The services billed most often include subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1104876945.
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
- (920) 725-4527
- Email not available
Practice Locations
100 THEDA CLARK MEDICAL PLZ SUITE 400
Neenah, WI 54956
Conditions Commonly Evaluated or Treated
Within General Surgery 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
Anorectal
- Anal fissure
- Anal fistula
- Hemorrhoids
- Perianal abscess
- Rectal prolapse
Appendix, bowel, and emergency
- Diverticulitis
- Intra-abdominal abscess
- Mesenteric ischemia
- Peritonitis
Gallbladder and biliary
- Acute gallbladder inflammation
- Biliary dyskinesia
Hernia and abdominal wall
- Belly-button hernia
- Femoral hernia
- Groin hernia
- Hiatal hernia
- Incisional hernia
- Ventral hernia
Skin and soft tissue
- Epidermoid cyst
- Hidradenitis suppurativa
- Lipoma
- Skin and soft-tissue abscess
- Soft-tissue mass
Abdominal
Abdominal wall
Breast
- Benign breast disease
- Breast abscess
- Gynecomastia
Colorectal
Digestive
- Acid reflux
- Acute pancreatitis
- Bleeding Stomach Ulcer
- Bowel Fistula
- Gastroparesis
- Swallowing difficulties
Emergency surgery
Endocrine
Gastrointestinal
Hernia
- Diaphragmatic hernia
- Sports Hernia
- Strangulated Hernia
Infections
Lymphatic
Oncology
Procedures & services
Most searched procedures
Bowel and emergency abdominal
- Colon resection
- Exploratory laparoscopy
- Exploratory laparotomy
- Repair of perforated peptic ulcer
- Small-bowel resection
- Surgery for bowel obstruction
- Surgical drainage of abdominal abscess
- Surgical lysis of adhesions
Gallbladder and appendix
- Gallbladder removal
Hernia repair
- Laparoscopic groin-hernia repair
- Robotic hernia repair
Skin and soft tissue
- Incision and drainage of an abscess
- Lipoma removal
- Removal of a soft-tissue mass
Abdominal surgery
Abdominal wall
- Abdominal Muscle Separation Repair
Access and nutrition
- Jejunostomy feeding-tube placement
Anorectal
- Anal fistula surgery
- Drainage of anal abscess
- Hemorrhoid removal
- Rubber-band ligation of hemorrhoids
- Surgery for chronic anal fissure
Biopsy
- Lymph Node Biopsy
Breast surgery
- Axillary lymph-node dissection
- Excisional biopsy of a breast mass
- Mastectomy
- Sentinel lymph-node biopsy
Breast Surgery
Colorectal
Colorectal surgery
- Colostomy Surgery
- Ileostomy Surgery
- Ostomy reversal
Digestive procedures
- Achalasia Surgery
- Acid reflux surgery
Endocrine surgery
- Partial Thyroid Removal
Gastrointestinal
Hernia surgery
- Sports hernia surgery
Skin & Soft Tissue
Surgical Oncology
Surgical procedures
Vascular Access
- Central line placement
- Chemo port placement
Wound care
- Wound cleaning and debridement
Procedures Most Often Billed to Medicare
171 services · 138 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
17 | Less often than most peers in General Surgery |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
47 | More often than most peers in General Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
42 | As often as other peers in General Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
22 | As often as other peers in General 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 General Surgery |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
15 | Less often than most peers in General Surgery |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
12 | Less often than most peers in General 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.
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 — 23 related providers in 3 groups
Trained at University of Wisconsin School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at University of Wisconsin School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in WI who bill this service to Medicare most often.
Common questions
What is Patrick J. Brennan's specialty?
Patrick J. Brennan is a general surgeon in Neenah, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Surgery”.
NPI registry
Where can I find Patrick J. Brennan?
Patrick J. Brennan is listed at 100 Theda Clark Medical Plz Suite 400, Neenah, WI 54956. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Patrick J. Brennan?
The number on file is (920) 725-4527. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Patrick J. Brennan?
Patrick J. Brennan's National Provider Identifier is 1104876945. 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
What is Patrick J. Brennan's education?
Patrick J. Brennan attended University of Wisconsin School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Patrick J. Brennan have?
Patrick J. Brennan has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What is Patrick J. Brennan known for?
According to Medicare billing data, Patrick J. Brennan performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Patrick J. Brennan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Patrick J. Brennan. If this is you, claiming it is free.
Guide.md
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