22 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Brennan, Surgeon in Neenah, WI?
Dr. Patrick Brennan, MD is a Surgeon, who primarily practices in Neenah, WI with 1 additional practice location. He has been practicing for over 22 years and is board certified. Dr. Brennan graduated from New Jersey College of Dentistry and completed his residency at Loyola Univ Med Ctr, General Surgery. Dr. Brennan is fluent in English, and is currently seeing new patients. Dr. Brennan’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Brennan’s office at (920) 725-4527.
Where did Dr. Brennan go to medical school and complete their residency?
Residency: Loyola Univ Med Ctr, General Surgery | Loyola University Medical Center Program
Medical School: University of Wi Med Sch, Madison Wi | New Jersey College of Dentistry
Is Dr. Brennan board certified as a Surgeon?
Yes, Dr. Patrick Brennan, MD is board certified by the American Board of Surgery
What languages does Dr. Brennan speak?
Dr. Brennan and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Brennan treat?
As a Surgeon, Dr. Brennan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Brennan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Acid Reflux
- GERD with Esophagitis
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Eosinophilic Esophagitis
- Gastroesophageal Reflux
- Heartburn
- Indigestion
- Reflux Esophagitis
- Acid Reflux Esophagus Inflammation
- Heartburn with Esophagus Damage
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
- K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding
Also known as:
- Groin Hernia (One Side)
- Diaphragmatic Hernia
- Umbilical Hernia
- Hernia
- Inguinal Hernia
- Unilateral Inguinal Hernia
- Single Groin Hernia
- Hernia in One Groin
- Hiatal Hernia
- Hernia of the Diaphragm
- Belly Button Hernia
- Navel Hernia
- Umbilical Rupture
ICD-10 Codes:
- K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
- K449: Diaphragmatic hernia without obstruction or gangrene
- K429: Umbilical hernia without obstruction or gangrene
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Rectal Bleeding
- Dark, Tarry Stools (Melena)
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
- Melena
- Black Stools
- Upper GI Bleed Signs
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
- K921: Melena
Also known as:
- Peripheral Artery Disease
- PVD
- PAD
- Poor Circulation in Legs
- Blocked Leg Arteries
ICD-10 Codes:
- I739: Peripheral vascular disease, unspecified
Also known as:
- Abdominal Pain
- Upper Middle Abdominal Pain
- Stomach Ache
- Belly Pain
- Stomach Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R109: Unspecified abdominal pain
- R1013: Epigastric pain
Also known as:
- Barrett's Esophagus
- Esophagus Disorder
- Barrett’s Esophagus
- Barrett's condition
- Esophageal metaplasia
ICD-10 Codes:
- K2270: Barrett's esophagus without dysplasia
Also known as:
- Gallstones with Chronic Gallbladder Inflammation
- Bile Duct Disease
- Gallstones
- Chronic cholecystitis with gallstones
- Long-term gallbladder inflammation
ICD-10 Codes:
- K8010: Calculus of gallbladder with chronic cholecystitis without obstruction
Also known as:
- Intestinal Obstruction
- Bowel Obstruction
- Blocked Intestines
- Gut Blockage
ICD-10 Codes:
- K56609: Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction
Also known as:
- Gallstones
- Cholelithiasis
- Gallbladder stones
- Biliary calculi
ICD-10 Codes:
- K8020: Calculus of gallbladder without cholecystitis without obstruction
Also known as:
- Follow-up After Treatment (Non-Cancer)
- Post-Treatment Check-up
- Aftercare Visit
- Recovery Monitoring Exam
ICD-10 Codes:
- Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Also known as:
- Acute Appendicitis
- Appendicitis
- Inflamed Appendix
- Sudden Appendix Inflammation
- Appendicitis Attack
ICD-10 Codes:
- K3580: Unspecified acute appendicitis
Also known as:
- Chronic Venous Insufficiency
- Vascular Disease
- CVI
- Venous Reflux Disease
- Leg Vein Incompetence
- Peripheral Venous Insufficiency
ICD-10 Codes:
- I872: Venous insufficiency (chronic) (peripheral)
What procedures does Dr. Brennan perform?
As a Surgeon, Dr. Brennan performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Brennan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colonoscopy with Polyp Removal
- Colonoscopy with Biopsy
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Hemorrhoid Ligation
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Hemorrhoid Banding
- Colon Exam with Ligation
CPT Codes:
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45398: Colonoscopy, flexible; with band ligation(s) (eg, hemorrhoids)
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Laparoscopic Inguinal Hernia Repair
- Repair of Small Abdominal Hernia (Complicated)
- Small Abdominal Hernia Repair
- Laparoscopic Repair of Recurrent Inguinal Hernia
- Abdominal Hernia Repair with Mesh
- Keyhole Groin Hernia Surgery
- Minimally Invasive Hernia Repair
- Laparoscopic Hernioplasty
- Epigastric Hernia Repair
- Umbilical Hernia Surgery
- Incisional Hernia Repair with Mesh
- Strangulated Hernia Surgery
- Ventral hernia repair
- Umbilical hernia surgery
- Epigastric hernia repair with mesh
- Incisional hernia repair
- Recurrent Groin Hernia Surgery
- Laparoscopic Inguinal Hernioplasty
- Ventral Hernia Repair
- Umbilical Hernia Repair
- Incisional Hernia Repair
- Epigastric Hernia Surgery
CPT Codes:
- 49650: Laparoscopy, surgical; repair initial inguinal hernia
- 49592: Repair of anterior abdominal hernia(s) (ie, epigastric, incisional, ventral, umbilical, spigelian), any approach (ie, open, laparoscopic, robotic), initial, including implantation of mesh or other prosthesis when performed, total length of defect(s); less than 3 cm, incarcerated or strangulated
- 49591: Repair of anterior abdominal hernia(s) (ie, epigastric, incisional, ventral, umbilical, spigelian), any approach (ie, open, laparoscopic, robotic), initial, including implantation of mesh or other prosthesis when performed, total length of defect(s); less than 3 cm, reducible
- 49651: Laparoscopy, surgical; repair recurrent inguinal hernia
- 49593: Repair of anterior abdominal hernia(s) (ie, epigastric, incisional, ventral, umbilical, spigelian), any approach (ie, open, laparoscopic, robotic), initial, including implantation of mesh or other prosthesis when performed, total length of defect(s); 3 cm to 10 cm, reducible
Also known as:
- Diagnostic Upper Endoscopy with Biopsy
- Esophagus Widening Procedure (Endoscopic)
- Flexible Sigmoidoscopy with Biopsy
- Sigmoidoscopy with Hemorrhoid Banding
- Colorectal Cancer Screening Tests
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Esophageal Dilation
- EGD with Dilation
- Upper Endoscopy with Widening
- Sigmoid Colon Scope with Biopsy
- Lower Endoscopy with Tissue Sample
- Flexible Sigmoidoscopy and Biopsy
- Rectum and Lower Colon Exam
- Flexible Sigmoidoscopy with Ligation
- Hemorrhoid Banding (Sigmoidoscopy)
- Lower Endoscopy for Hemorrhoids
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 43248: Esophagogastroduodenoscopy, flexible, transoral; with insertion of guide wire followed by passage of dilator(s) through esophagus over guide wire
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
- 45350: Sigmoidoscopy, flexible; with band ligation(s) (eg, hemorrhoids)
Also known as:
- Laparoscopic Gallbladder Removal
- Laparoscopic Gallbladder Removal with X-ray
- Keyhole Gallbladder Surgery
- Cholecystectomy Laparoscopic
- Minimally Invasive Gallbladder Surgery
- Cholecystectomy with Cholangiography
- Minimally Invasive Gallbladder Removal
CPT Codes:
- 47562: Laparoscopy, surgical; cholecystectomy
- 47563: Laparoscopy, surgical; cholecystectomy with cholangiography
Also known as:
- Laparoscopic Appendectomy
- Minimally Invasive Appendectomy
- Keyhole Appendectomy
- Scope Appendectomy
CPT Codes:
- 44970: Laparoscopy, surgical, appendectomy
Also known as:
- Emergency Abdominal Hernia Repair with Mesh
- Incarcerated Hernia Repair
- Strangulated Hernia Surgery
- Ventral Hernia Repair with Mesh
- Umbilical Hernia Repair
CPT Codes:
- 49594: Repair of anterior abdominal hernia(s) (ie, epigastric, incisional, ventral, umbilical, spigelian), any approach (ie, open, laparoscopic, robotic), initial, including implantation of mesh or other prosthesis when performed, total length of defect(s); 3 cm to 10 cm, incarcerated or strangulated
Also known as:
- Feeding Tube Placement with Endoscopy
- PEG Tube Placement
- Gastrostomy Tube Insertion
- EGD with Feeding Tube
- Percutaneous Endoscopic Gastrostomy
CPT Codes:
- 43246: Esophagogastroduodenoscopy, flexible, transoral; with directed placement of percutaneous gastrostomy tube
Also known as:
- Radiofrequency Vein Ablation
- Endovenous Radiofrequency Ablation
- RF Ablation for Varicose Veins
- Vein Closure Procedure
- Varicose Vein Treatment
CPT Codes:
- 36475: Endovenous ablation therapy of incompetent vein, extremity, inclusive of all imaging guidance and monitoring, percutaneous, radiofrequency; first vein treated
Also known as:
- Inserting a Long-Term IV Port (Central Line)
- Tunneled central venous catheter insertion
- Subcutaneous port placement
- Central line with port
CPT Codes:
- 36561: Insertion of tunneled centrally inserted central venous access device, with subcutaneous port; age 5 years or older
Also known as:
- Varicose Vein Removal (Stab Phlebectomy)
- Microphlebectomy
- Ambulatory Phlebectomy
- Stab Incision Vein Removal
CPT Codes:
- 37765: Stab phlebectomy of varicose veins, 1 extremity; 10-20 stab incisions
Also known as:
- Tunneled Central Venous Catheter Removal
- Central Line Explant
- Port-a-Cath Removal
- Implantable Venous Access Device Removal
- Tunneled Catheter Extraction
CPT Codes:
- 36590: Removal of tunneled central venous access device, with subcutaneous port or pump, central or peripheral insertion
Also known as:
- Varicose Vein Removal (Multiple Incisions)
- Stab Phlebectomy
- Microphlebectomy
- Varicose Vein Excision
CPT Codes:
- 37766: Stab phlebectomy of varicose veins, 1 extremity; more than 20 incisions
Also known as:
- Large Benign Skin Lesion Removal
- Removal of Benign Skin Lesion
- Benign Skin Growth Excision
- Skin Tumor Removal (Benign)
- Large Skin Lesion Biopsy
- Skin Lesion Removal Surgery
- Mole Removal
- Skin Tumor Excision
CPT Codes:
- 11406: Excision, benign lesion including margins, except skin tag (unless listed elsewhere), trunk, arms or legs; excised diameter over 4.0 cm
- 11403: Excision, benign lesion including margins, except skin tag (unless listed elsewhere), trunk, arms or legs; excised diameter 2.1 to 3.0 cm
Also known as:
- Removal of Non-Cancerous Skin Growth (1.1-2.0 cm)
- Benign Skin Lesion Excision
- Skin Tumor Removal (Benign)
- Mole Removal (Non-Cancerous)
CPT Codes:
- 11402: Excision, benign lesion including margins, except skin tag (unless listed elsewhere), trunk, arms or legs; excised diameter 1.1 to 2.0 cm
Also known as:
- Simple Pilonidal Cyst Removal
- Pilonidal Sinus Excision
- Tailbone Cyst Removal
- Sacrococcygeal Cyst Surgery
CPT Codes:
- 11770: Excision of pilonidal cyst or sinus; simple
Also known as:
- Wound Debridement
- Surgical Wound Cleaning
- Tissue Removal from Wound
- Dead Tissue Removal
CPT Codes:
- 11042: Debridement, subcutaneous tissue (includes epidermis and dermis, if performed); first 20 sq cm or less
Also known as:
- Removal of Large Soft Tissue Tumor (Back/Flank)
- Subcutaneous Tumor Excision (Back)
- Flank Tumor Removal
- Large Soft Tissue Mass Excision
- Back Tumor Surgery
CPT Codes:
- 21931: Excision, tumor, soft tissue of back or flank, subcutaneous; 3 cm or greater
Does Dr. Brennan accept my insurance?
Dr. Brennan accepts most major insurance plans. Important: Please call our office at (920) 725-4527 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Brennan accept in Neenah, WI?
Dr. Brennan in Neenah, WI accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Crown Cork and Seal Company
Elevance Health Inc. (formerly Anthem)
Health Partners Plans
Humana
Medicare
MedImpact
Network Health
State of Tennessee
State of Wisconsin
UnitedHealthcare
View All Insurances
Where is Dr. Brennan's office located?
Dr. Patrick Brennan's Primary Practice
100 Theda Clark Medical Plz Ste 400
Neenah, WI 54956
(920) 725-4527
What is Dr. Brennan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Brennan's National Provider Identifier (NPI) number is 1104876945.
What common questions do patients ask about Dr. Brennan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Brennan
What is Dr. Patrick Brennan's specialty?
Dr. Brennan is a Surgeon near Neenah, WI. General surgeons are experts in diagnosing and managing surgical conditions which includes preoperative, operative, and postoperative care, as well as addressing complications. Their expertise include the areas such as the alimentary tract, breast, abdomen, skin and soft tissue, endocrine system, head and neck, pediatric surgery, surgical critical care, surgical oncology, trauma, burns, and vascular surgery. General surgeons increasingly utilize minimally invasive and endoscopic techniques to provide proper care. In addition to this, many general surgeons have expertise in transplantation, plastic, and cardiothoracic surgery. Contact Dr. Brennan to book an appointment today.
Is this Dr. Patrick Brennan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Brennan is affiliated with ThedaCare Regional Medical Center-Neenah, ThedaCare Regional Medical Center-Appleton, ThedaCare Medical Center - Berlin, Froedtert Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Surgeon?
Explore Surgeon with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Patrick Brennan accepting new patients in Neenah, WI?
Yes, Dr. Patrick Brennan is accepting new patients at this time.
Does Dr. Patrick Brennan offer online booking?
Please contact Dr. Brennan's office at (920) 725-4527 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Patrick Brennan?
Please contact Dr. Brennan's office at (920) 725-4527 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Patrick Brennan have?
Dr. Patrick Brennan is certified by the American Board of Surgery.
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