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Wellstar Summit Surgical

590 Nancy Street
Marietta, GA 30060
Areas of Focus
General Surgery

Expert surgeons provide comprehensive treatment for a variety of conditions affecting the abdomen, stomach, digestive tract, intestines, rectum, and all types of hernias.

Minimally Invasive Surgery

Skilled surgeons address conditions such as hiatal hernias, acid reflux, esophageal disorders, diverticulitis, and colon and hernia diseases using advanced laparoscopic and robotic techniques to reduce pain and promote faster recovery.

Endocrine Surgery

Fellowship-trained surgeons specialize in treating endocrine disorders and cancers, offering expert care for conditions involving the thyroid, parathyroid, and adrenal glands.

Surgical Oncology

Our experienced surgeons specialize in the diagnosis and treatment of a broad spectrum of cancers, including those affecting the stomach, abdomen, skin, colon, rectum, soft tissues, esophagus, liver, pancreas, and bile ducts.

  • Wellstar Summit Surgical
  • About Us
  • Our Team
  • Info
(770) 423-0395 Book with MyChart COVID-19 Info

Location

About Us

About Us

Wellstar Summit Surgical is committed to delivering world-class surgical care with a patient-centered approach. Our team of multi-specialty providers combines advanced techniques with compassionate care to ensure the highest quality treatment experience. Specializing in general surgery, endocrine surgery, minimally invasive procedures, and surgical oncology, our board-certified surgeons bring unparalleled expertise to meet your needs. We treat a wide range of conditions, including:

General & Minimally Invasive Surgery:
  • Diverticulitis
  • Esophagus
  • Gallbladder
  • Hemorrhoids
  • Hernias (hiatal and ventral)
  • Lipoma
  • Muscle biopsy
  • Pilonidal cysts
  • Spleen
Endocrine Surgery:
  • Adrenals
  • Parathyroids
  • Thyroids
Surgical Oncology:
  • Adrenal gland cancer
  • Appendiceal cancer
  • Bile duct cancer
  • Colon cancer
  • Duodenum cancer
  • Esophageal cancer
  • Gallbladder cancer
  • Liver cancer
  • Melanoma
  • Pancreatic cancer
  • Peritoneal cancer
  • Rectum cancer
  • Sarcoma cancer
  • Small Intestine cancer
  • Spleen cancer
  • Stomach cancer

If you have any questions about our practice or wish to schedule an appointment, please call our office at 770-423-0395.

Office Location
590 Nancy Street
Marietta, GA 30060
Contact

Phone (770) 423-0395

Fax (770) 499-0352

Hours
Monday: 8:00 AM-5:00 PM Tuesday: 8:00 AM-5:00 PM Wednesday: 8:00 AM-5:00 PM Thursday: 8:00 AM-5:00 PM Friday: 8:00 AM-5:00 PM
Open Closes 5:00 PM
(770) 423-0395 Book with MyChart COVID-19 Info
Meet our Team
Robert Holcomb, MD

Surgeon with Wellstar since 1991.

Specialties
General Surgery
Learn More Book with MyChart
Sartaj Sanghera, MD

Surgical Oncologist with Wellstar since 2013.

Specialties
Surgical Oncology
Learn More Book with MyChart
Derek Duey, MD

Surgeon with Wellstar since 2020.

Specialties
General Surgery
Learn More
Madison Barry, PA

Physician Assistant with Wellstar since 2021.

Specialties
Surgical Oncology
Learn More
Robin Christine Gohacki, NP

Nurse Practitioner with Wellstar since 2014.

Specialties
Surgical Oncology
Learn More
Sahir Shroff, MD

Surgical Oncologist with Wellstar since 2004.

Specialties
Surgical Oncology
Learn More Book with MyChart
Magdalene Cushing, PA

Physician Assistant with Wellstar since 2024.

Specialties
General Surgery
Learn More
Jeffrey Schwab, MD

Surgeon with Wellstar since 2001.

Specialties
General Surgery
Learn More Book with MyChart
Tyler Wooten, PA

Physician Assistant with Wellstar since 2018.

Specialties
General Surgery
Learn More
Kathrine Kelly, DO

Surgical Oncologist with Wellstar since 2025.

Specialties
Surgical Oncology
Learn More
Gary Hathaway, MD

Surgeon with Wellstar since 1997.

Specialties
General Surgery
Learn More Book with MyChart
Katherine Browne, PA

Physician Assistant with Wellstar since 2021.

Specialties
Surgical Oncology
Learn More
See More Results

Meet our Team

Robert Holcomb, MD

Surgeon with Wellstar since 1991.

Specialties
General Surgery
Learn More Book with MyChart
Sartaj Sanghera, MD

Surgical Oncologist with Wellstar since 2013.

Specialties
Surgical Oncology
Learn More Book with MyChart
Derek Duey, MD

Surgeon with Wellstar since 2020.

Specialties
General Surgery
Learn More
Madison Barry, PA

Physician Assistant with Wellstar since 2021.

Specialties
Surgical Oncology
Learn More
Robin Christine Gohacki, NP

Nurse Practitioner with Wellstar since 2014.

Specialties
Surgical Oncology
Learn More
Sahir Shroff, MD

Surgical Oncologist with Wellstar since 2004.

Specialties
Surgical Oncology
Learn More Book with MyChart
Magdalene Cushing, PA

Physician Assistant with Wellstar since 2024.

Specialties
General Surgery
Learn More
Jeffrey Schwab, MD

Surgeon with Wellstar since 2001.

Specialties
General Surgery
Learn More Book with MyChart
Tyler Wooten, PA

Physician Assistant with Wellstar since 2018.

Specialties
General Surgery
Learn More
Kathrine Kelly, DO

Surgical Oncologist with Wellstar since 2025.

Specialties
Surgical Oncology
Learn More
Gary Hathaway, MD

Surgeon with Wellstar since 1997.

Specialties
General Surgery
Learn More Book with MyChart
Katherine Browne, PA

Physician Assistant with Wellstar since 2021.

Specialties
Surgical Oncology
Learn More

Robert Holcomb, MD

Surgeon with Wellstar since 1991.

Specialties
General Surgery
Education
Doctor of Medicine
Patient Rating

Dr. Holcomb earned his bachelor’s degree at Clemson University in Clemson, S.C. and his medical degree from Medical University of South Carolina in Charleston, S.C. He completed his general surgery internship and residency at Medical College of Georgia in Augusta, Ga.

Board certified, Dr. Holcomb is a member of the Medical Association of Georgia, Cobb County Medical Society and is an American College of Surgeons fellow. Dr. Holcomb is in practice with Wellstar Summit Surgical.

Book with MyChart

Sartaj Sanghera, MD

Surgical Oncologist with Wellstar since 2013.

Specialties
Surgical Oncology
Education
Doctor of Medicine
Patient Rating

Dr. Sanghera completed his medical degree at Kasturba Medical College in Manipal, India. He completed an internship and residency at Maimonides Medical Center in Brooklyn, N.Y. as well as a research fellowship in molecular and cellular oncology at MD Anderson Cancer Center in Houston, TX and a clinical fellowship in surgical oncology at Roswell Park Cancer Institute in Buffalo, N.Y.

Board certified by the American Board of Surgery, Dr. Sanghera is a member of the American Society of Clinical Oncology, American College of Surgeons and Society of the Surgical Oncology. Dr. Sanghera is in practice with Wellstar Medical Group, Summit Surgical.

Book with MyChart

Derek Duey, MD

Surgeon with Wellstar since 2020.

Specialties
General Surgery
Education
Doctor of Medicine

Madison Barry, PA

Physician Assistant with Wellstar since 2021.

Specialties
Surgical Oncology
Education
Master of Science - PhyAsst
Patient Rating

Robin Christine Gohacki, NP

Nurse Practitioner with Wellstar since 2014.

Specialties
Surgical Oncology
Education
MS Nursing Family Nurse Prac
Patient Rating

Sahir Shroff, MD

Surgical Oncologist with Wellstar since 2004.

Specialties
Surgical Oncology
Education
Bachelors in Medicine/Surgery
Patient Rating

Dr. Sahir Shroff earned his bachelor of medicine and bachelor of surgery at the University of Bombay in Mumbai, India. He completed his general surgery residency at the University of Pennsylvania in Philadelphia, PA and the Abington Memorial Hospital in Abington, PA. Dr. Shroff completed his fellowship in surgical oncology at the University of Pittsburgh Medical Center in Pittsburgh, PA.

Board-certified, Dr. Shroff is a member of the American College of Surgeons, Society of Surgical Oncology, the Americas Hepato-Pancreato-Biliary Association and a fellow of the American College of Surgeons. In 2018, he began performing robotic liver and pancreas surgeries.

Book with MyChart

Magdalene Cushing, PA

Physician Assistant with Wellstar since 2024.

Specialties
General Surgery
Education
Master of Science - PhyAsst
Patient Rating

Jeffrey Schwab, MD

Surgeon with Wellstar since 2001.

Specialties
General Surgery
Education
Doctor of Medicine
Patient Rating

Dr. Schwab earned his bachelor’s degree from the University of Illinois, Champaign-Urbana in Champaign-Urbana, Ill. and his medical degree from the University of Missouri-Columbia School of Medicine in Columbia, Mo. He completed his general surgery residency at the Atlanta Medical Center in Atlanta, Ga.

Board certified, Dr. Schwab is a member of the American College of Surgeons and the Society of American Gastrointestinal Endoscopic Surgeons. Dr. Schwab is in practice with Wellstar Summit Surgical.

In addition to general surgery, Dr. Schwab specializes in minimally invasive procedures, including advanced laparoscopic and robotic techniques for the treatment of gastroesophageal reflux, esophageal disorders, and colorectal diseases.

Book with MyChart

Tyler Wooten, PA

Physician Assistant with Wellstar since 2018.

Specialties
General Surgery
Education
Master of Science PA
Patient Rating

Kathrine Kelly, DO

Surgical Oncologist with Wellstar since 2025.

Specialties
Surgical Oncology
Education
Doctor of Osteopathic Medicine
Patient Rating

Gary Hathaway, MD

Surgeon with Wellstar since 1997.

Specialties
General Surgery
Education
Doctor of Medicine
Patient Rating

Dr. Hathaway earned his bachelor’s degree at the University of Illinois at Urbana in Urbana, Ill. and his medical degree from the University of Illinois Health Sciences Center at Chicago. He completed a general surgery residency at Boston University Medical Center in Boston, Mass.

Board certified, Dr. Hathaway is an American College of Surgeons fellow and a member of the American Medical Association, Cobb County Medical Society, and American Society of General Surgery. Dr. Hathaway is in practice with Wellstar Summit Surgical.

Book with MyChart

Katherine Browne, PA

Physician Assistant with Wellstar since 2021.

Specialties
Surgical Oncology
Education
Master of Science - PhyAsst
Patient Rating

Helpful Information for your next visit.
  • Appointments and Cancellations
  • Insurance and Payments
  • Prescription Refills
  • Printable Office Forms
  • Referrals
Appointments and Cancellations
To schedule an appointment, please call our office. If you need to cancel, we kindly ask that you notify us at least 24 hours in advance so we can offer the time to another patient in need of care.
Insurance and Payments
Wellstar accepts most health insurance plans. If you need assistance understanding your coverage or determining your out-of-pocket costs, our office is here to help. Please note that payment is due at the time of service.
Prescription Refills
If you are an existing patient, please request medication refills via MyChart or by contacting the office. We will respond to any refill requests with 2 business days.
Printable Office Forms

Authorization for Release of PHI
Authorization for Release of PHI Spanish
MyChart Adult Proxy
MyChart Child Proxy
MyChart Teen Proxy
Notice of Privacy Practices Acknowledgement
Notice of Privacy Practices Acknowledgement Spanish
Patient Communication Designation
Patient Communication Designation Spanish
Patient Registration
Patient Registration Spanish
Consent for Treatment and Healthcare Operations
New Patient Forms
Patient Information
Referrals
Please ensure that any imaging, lab results, or office visit notes from outside of Wellstar related to your visit are sent to our office prior to your appointment.

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COMMUNITY CARE

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In the Community Health Highlights Events & Classes
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Corporate Purchasing Community Health Needs Assesment
Give
Wellstar Foundation Donate Ways to Give Volunteer

ABOUT US

About Wellstar Diversity Equity Inclusion & Belonging Leadership Wellstar Board of Trustees Healthcare Innovation Safety First Commitment Wellstar Research Institute Latest News

CAREERS & EDUCATION

Careers at Wellstar Graduate Medical Education Pharmacy Residency

PATIENT RESOURCES

Pay Your Bill Accepted Insurance

HELP

Contact Us Hospital Transparency Information Price Transparency Policy and Privacy Information

MEDIA

Media Room

COMMUNITY CARE

Community Care
In the Community Health Highlights Events & Classes
For Business
Corporate Purchasing Community Health Needs Assesment
Give
Wellstar Foundation Donate Ways to Give Volunteer

ABOUT US

About Wellstar Diversity Equity Inclusion & Belonging Leadership Wellstar Board of Trustees Healthcare Innovation Safety First Commitment Wellstar Research Institute Latest News

CAREERS & EDUCATION

Careers at Wellstar Graduate Medical Education Pharmacy Residency

PATIENT RESOURCES

Pay Your Bill Accepted Insurance

HELP

Contact Us Hospital Transparency Information Price Transparency Policy and Privacy Information

MEDIA

Media Room

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