Berlin Clinic

Horace Lo, MD, FACS
Dr. Horace Lo
Jennifer Sonnentag, APNP | FVSS
Jennifer Sonnentag, APNP
Darren Nelson, MD
Dr. Darren Nelson

Advanced, Leading-Edge Care with a Commitment to Community  

The Fox Valley Surgical team at our Berlin location is deeply committed to surgical excellence, with three highly skilled, full-time surgeons and support staff. Based at the ThedaCare Regional Medical Center-Berlin campus, our board-certified team collaborates with local primary care providers to deliver an exceptional breadth of care that’s close to home for patients west of the Fox Valley. Our extended coverage area includes full-time hours in Berlin, with appointment times also available at the ThedaCare Physicians-Ripon clinic.

Whether your medical or surgical needs are breast, colon, vascular, thoracic, hernia, endoscopy-related and more, this highly experienced team brings you advanced training and high-level technology, including robotics. Just one example of the leading-edge technology and expertise we offer is use of the da Vinci Surgical System Xi robot, which provides extraordinary surgical precision and quicker recovery times for patients.

Our Berlin team is here for you, with a dedication to ongoing education, a personalized approach to care – and a deep commitment to serving you and your community right where you live and work.

Advanced Treatments and Procedures Include:

  • Cancer Surgery 
  • Breast Surgery
  • Colon Surgery
  • Vascular Surgery, including Carotid Artery and Peripheral Bypass 
  • Gallbladder Surgery
  • Hernia Repairs
  • Appendectomy
  • Upper and Lower Endoscopy
  • Skin Cancer
  • Thyroid and Lung Surgeries
  • Diagnostic Imaging
  • Surgical Endoscopy
  • Laparoscopy
  • Robotic Surgery
  • and more…

Berlin Team Providers