
23 Years of Experience
Accepting patients
Who is Dr. Regan, Surgeon in Mequon, WI?
Dr. Joseph Regan, MD is a Surgeon, who primarily practices in Mequon, WI with 1 additional practice location. He has been practicing for over 23 years and is board certified. Dr. Regan completed his residency at Univ Of Md Med Sys, General Surgery. Dr. Regan is fluent in English, and is currently seeing new patients. Dr. Regan’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Regan’s office.
What are Areas of Expertise for Dr. Regan?
Dr. Joseph Regan, MD is a highly-rated, board-certified Surgeon known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Regan empowers patients to confidently navigate their health journey, specializing in Bariatric/Obesity Surgery, and comprehensive wellness support. Serving the Mequon, WI community, Dr. Regan is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Regan go to medical school and complete their residency?
Residency: Univ Of Md Med Sys, General Surgery | University MD Med School
Medical School: Northwestern Uniiversity
Is Dr. Regan board certified as a Surgeon?
Yes, Dr. Joseph Regan, MD is board certified by the American Board of Surgery
What languages does Dr. Regan speak?
Dr. Regan and their clinical team can communicate with patients in the following languages:
English
What conditions does a Surgeon like Dr. Regan typically treat?
As a Surgeon, Dr. Regan 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. Regan. 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. Learn more about our claims-based healthcare methodology.
Also known as:
- Severe Obesity
- Obesity
- Helping Your Child Who Is Overweight
- Take Charge of Your Health: A Guide for Teenagers
- Understanding Adult Overweight & Obesity
- Morbid Obesity
- Extreme Obesity
- Class 3 Obesity
ICD-10 Codes:
- E6601: Morbid (severe) obesity due to excess calories
Also known as:
- Nutrition Counseling
- Nutrition
- Dietary advice
- Nutritional guidance
- Healthy eating counseling
ICD-10 Codes:
- Z713: Dietary counseling and surveillance
Also known as:
- Groin Hernia (One Side)
- Hernia
- Inguinal Hernia
- Unilateral Inguinal Hernia
- Single Groin Hernia
- Hernia in One Groin
ICD-10 Codes:
- K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
Also known as:
- Digestive System Surgery Aftercare
- After Surgery
- Post-gastrointestinal surgery care
- Stomach surgery aftercare
- Bowel surgery recovery
ICD-10 Codes:
- Z48815: Encounter for surgical aftercare following surgery on the digestive system
What procedures does a Surgeon like Dr. Regan typically perform?
As a Surgeon, Dr. Regan 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. Regan. 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. Learn more about our claims-based healthcare methodology.
Also known as:
- Inguinal Hernia Repair (Adults and Children 5+)
- Laparoscopic Inguinal Hernia Repair
- Repair of Small Abdominal Hernia (Complicated)
- Groin Hernia Surgery
- Reducible Inguinal Hernia Repair
- First Inguinal Hernia Fix
- Adult Inguinal Hernia Surgery
- Keyhole Groin Hernia Surgery
- Minimally Invasive Hernia Repair
- Laparoscopic Hernioplasty
- Epigastric Hernia Repair
- Umbilical Hernia Surgery
- Incisional Hernia Repair with Mesh
- Strangulated Hernia Surgery
CPT Codes:
- 49505: Repair initial inguinal hernia, age 5 years or older; reducible
- 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
Also known as:
- Laparoscopic Sleeve Gastrectomy
- Gastric Sleeve Surgery
- Longitudinal Gastrectomy
- Laparoscopic Weight Loss Surgery
CPT Codes:
- 43775: Laparoscopy, surgical, gastric restrictive procedure; longitudinal gastrectomy (ie, sleeve gastrectomy)
Also known as:
- Laparoscopic Gallbladder Removal with X-ray
- Keyhole Gallbladder Surgery
- Cholecystectomy with Cholangiography
- Minimally Invasive Gallbladder Removal
CPT Codes:
- 47563: Laparoscopy, surgical; cholecystectomy with cholangiography
Does Dr. Regan accept my insurance?
Dr. Regan accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Regan accept in Mequon, WI?
Dr. Regan in Mequon, WI accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Aetna
Broward Health
Cigna Group
Elevance Health Inc. (formerly Anthem)
Federal government of the United States
Humana
Medica Group
Medicare
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Regan's office located?
What is Dr. Regan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Regan's National Provider Identifier (NPI) number is 1639116486.
What common questions do patients ask about Dr. Regan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Regan
What is Dr. Joseph Regan's specialty?
Dr. Regan is a Surgeon near Mequon, WI.
What does a Surgeon do?
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.
Is this Dr. Joseph Regan affiliated with a ranked Castle Connolly Top Hospital?
No, Regan is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Ascension Columbia St. Mary's Hospital - Ozaukee Campus, Ascension Columbia St. Mary's Hospital - Milwaukee Campus. Castle Connolly Top Hospitals 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
When to see a Surgeon?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Surgeon. Explore 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 Joseph Regan accepting new patients in Mequon, WI?
Yes, Dr. Joseph Regan is accepting new patients at this time.
Does Dr. Joseph Regan offer online booking?
Please contact Dr. Regan's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Joseph Regan?
Please contact Dr. Regan's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Joseph Regan have?
Dr. Joseph Regan is certified by the American Board of Surgery.
Other Surgeon Near Mequon, WI

Surgeon
Dr. Craig Siverhus, MD is a Surgeon, who primarily practices in Milwaukee, WI with 1 additional practice location. He is board certified.
Milwaukee, WI

Thoracic Surgeon
Dr. Vijay Kantamneni, MD is a Thoracic Surgeon, who primarily practices in Janesville, WI with 2 additional practice locations. He is board certified.
Janesville, WI
RC
Surgeon
Dr. Richard Cattey, MD is a Surgeon, who primarily practices in Mequon, WI with 1 additional practice location. He has been practicing for over 35 years and is board certified.
Mequon, WI