GG
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Gerrish, Surgeon in Watertown, SD?
Dr. Gregory Gerrish, MD is a Surgeon, who primarily practices in Watertown, SD with 2 additional practice locations. Dr. Gerrish is currently affiliated with Prairie Lakes Hospital. Dr. Gerrish is fluent in English, and is currently seeing new patients. Dr. Gerrish’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gerrish’s office at (605) 882-7000.
What languages does Dr. Gerrish speak?
Dr. Gerrish and their clinical team can communicate with patients in the following languages:
English
What conditions does a Surgeon like Dr. Gerrish typically treat?
As a Surgeon, Dr. Gerrish 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. Gerrish. 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:
- 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:
- Diaphragmatic Hernia
- Hernia
- Hiatal Hernia
- Hernia of the Diaphragm
ICD-10 Codes:
- K449: Diaphragmatic hernia without obstruction or gangrene
Also known as:
- Iron Deficiency Anemia
- Anemia
- Iron
- Anemia from Iron Lack
- Low Iron Anemia
- Sideropenic Anemia
ICD-10 Codes:
- D509: Iron deficiency anemia, unspecified
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Fluid in Abdomen
- Liver Disease
- Ascites
- Abdominal fluid buildup
- Peritoneal fluid
ICD-10 Codes:
- R188: Other ascites
Also known as:
- Abnormal Bowel Movements
- Bowel Movement
- Unusual stool
- Changes in poop
- Fecal changes
ICD-10 Codes:
- R195: Other fecal abnormalities
Also known as:
- Other Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Swallowing problems
ICD-10 Codes:
- R1319: Other dysphagia
What procedures does a Surgeon like Dr. Gerrish typically perform?
As a Surgeon, Dr. Gerrish 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. Gerrish. 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:
- Colonoscopy with Polyp Removal
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Polyp/Tumor Removal
- Colonoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible colonoscopy with ablation
- Colon polyp removal
- Colon tumor destruction
- Therapeutic colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
CPT Codes:
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45388: Colonoscopy, flexible; with ablation of tumor(s), polyp(s), or other lesion(s) (includes pre- and post-dilation and guide wire passage, when performed)
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
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:
- Diagnostic Upper Endoscopy with Biopsy
- EGD with Esophageal Balloon Dilation
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
Also known as:
- Abdominal Fluid Drainage with Imaging Guidance
- Guided Abdominal Paracentesis
- Ascites Drainage with Ultrasound
- Fluid Removal from Belly
CPT Codes:
- 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance
Does Dr. Gerrish accept my insurance?
Dr. Gerrish accepts most major insurance plans. Important: Please call our office at (605) 882-7000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Gerrish accept in Watertown, SD?
Dr. Gerrish in Watertown, SD accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Corporate Services
Medica Group
Medicare
PrimeWest Health
UnitedHealth Group
Unknown
Wellmark Blue Cross Blue Shield
View All Insurances
Where is Dr. Gerrish's office located?
What is Dr. Gerrish's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Gerrish's National Provider Identifier (NPI) number is 1992097703.
What common questions do patients ask about Dr. Gerrish?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gerrish
What is Dr. Gregory Gerrish's specialty?
Dr. Gerrish is a Surgeon near Watertown, SD.
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. Gregory Gerrish affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Gerrish is affiliated with Avera Mckennan Hospital & University Health Center which is a Castle Connolly Top Hospital. 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
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 Gregory Gerrish accepting new patients in Watertown, SD?
Yes, Dr. Gregory Gerrish is accepting new patients at this time.
Does Dr. Gregory Gerrish offer online booking?
Please contact Dr. Gerrish's office at (605) 882-7000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Gregory Gerrish?
Please contact Dr. Gerrish's office at (605) 882-7000 for information regarding telehealth appointment availability or for scheduling assistance.
Other Surgeon Near Watertown, SD
JS
Surgeon
Dr. Jacob Schaeffer, MD is a Surgeon, who primarily practices in Watertown, SD with 2 additional practice locations.
Watertown, SD
KJ
Surgeon
Dr. Kristopher Johnson, MD is a Surgeon, who primarily practices in Watertown, SD with 1 additional practice location.
Watertown, SD

Surgeon
Dr. Alan Christensen, MD is a Surgeon, who primarily practices in Watertown, SD with 2 additional practice locations. He is board certified.
Watertown, SD