Skip to main content
Fairfield Medical Center Single Color Logo

General Surgery Experience Patient-Centered Care

On March 24, 2024, General Surgical Associates (GSA) and their staff joined Fairfield Healthcare Professionals General Surgery.

As long-time community partners and excellent surgeons, we are proud to welcome Jeffrey Yenchar, MD, David Robertson, MD, and Margaret Sawyer, MD – along with their dedicated team – to FHP. We also welcomed a new addition, Dr. Daniel Hyatt, to the group in April 2024.

In the coming months, both practices will relocate to a newly remodeled office in the Pavilion. Until this space is ready, providers and staff of the former GSA office will continue to offer services at their current location at 618 Pleasantville Rd., Suite 301, while FHP General Surgery – River View will remain at 2405 N. Columbus St, Suite 250.

Fairfield Healthcare Professionals General Surgery provides access to a variety of inpatient and outpatient surgical procedures at Fairfield Medical Center. Our skilled physician group utilizes minimally invasive techniques – including laparoscopic and robotic-assisted procedures – as well as traditional surgical interventions to create positive outcomes for the patients we serve.

At FHP General Surgery, we understand your procedure is only one one step on the path to healing. Our team offers pre-operative consultations to help you and your loved ones prepare for surgery and post-operative support and encourage you through recovery.

What is general surgery?

General surgery is a surgical speciality that focuses on resolution or repair of conditions affecting several parts of the body, including the stomach, intestines, gallbladder and more. Your provider will not only perform your surgery, but also will care for you before, during and after your procedure. 

Some of the most commonly performed procedures include:

  • Appendectomy

  • Laparoscopic and robotic surgery including, gallbladder and hernia repair

  • Breast and colon cancer surgery

  • Thyroid surgery

  • EGD and colonoscopy

  • Heartburn procedures, including LINX and Nissen fundoplication

  • Malignant melanoma

  • Lymph node biopsy

  • And additional procedures

Two Convenient Office Locations

Fairmore Center

Fairfield Healthcare Professionals

General Surgery – Fairmore Center

618 Pleasantville Rd.
Suite 301
Lancaster, OH 43130


Providers in this office:

  • Dr. Jeffrey Yenchar
  • Dr. David Robertson
  • Dr. Margaret Sawyer
  • Dr. Daniel Hyatt

Formerly of General Surgical Associates

River View

Fairfield Healthcare Professionals

General Surgery – River View

2405 N. Columbus St.
Upper Level, Entrance B, Suite 250
Lancaster, OH 43130


Providers in this office:

  • Dr. David Hasl
  • Dr. Scott Johnson
  • Amanda Myers, PA
  • Amy Belott, PA
  • Bethany Smith, PA


Regardless of which office you visit and depending on your surgical needs, your procedure may be performed at either River View Surgery Center or Fairfield Medical Center’s main campus. Your healthcare team and expert schedulers will discuss these details with you on an individual basis. 

What Our Patients Are Saying ...

Dr. Johnson is always so easy to talk to, and he explains everything in great detail so you know exactly what is going on and why. I highly recommend him to anyone needing someone in his field of expertise.”
- Connie, Patient
Exceptional care from Dr. Hasl is over the top with the care and respect.”
- Patient
Dr Yenchar is the best. A very kind and caring physician.”
- Ambulatory Surgery Patient
Dr. Sawyer is one of the best! A consummate professional.”
- Ambulatory Surgery patient
Bethany genuinely seems to care about my wellbeing.”
- Chris, Patient
My surgeon, Dr. Robertson was the best.”
- FMC Patient

Surgical Expertise Meet our Providers