BM
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Merrifield, Gastroenterologist in Olympia, WA?
Dr. Benjamin Merrifield, MD is a Gastroenterologist, who primarily practices in Olympia, WA with 2 additional practice locations. Dr. Merrifield graduated from Case Western Reserve University School of Medicine. Dr. Merrifield is fluent in English and Spanish, and is currently seeing new patients. Dr. Merrifield’s practice accepts Kaiser Permanente, Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Merrifield’s office at (360) 413-8250.
Where did Dr. Merrifield go to medical school and complete their residency?
Medical School: Case Western Reserve University School of Medicine
What languages does Dr. Merrifield speak?
Dr. Merrifield and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Gastroenterologist like Dr. Merrifield typically treat?
As a Gastroenterologist, Dr. Merrifield 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. Merrifield. 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:
- Dark, Tarry Stools (Melena)
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Melena
- Black Stools
- Upper GI Bleed Signs
- GI Bleeding
- Internal Digestive Bleeding
- Digestive Tract Hemorrhage
ICD-10 Codes:
- K921: Melena
- K922: Gastrointestinal hemorrhage, unspecified
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:
- Throat and Esophagus Swallowing Difficulty
- Swallowing Disorder
- Pharyngoesophageal dysphagia
- Trouble swallowing in throat
- Esophageal swallowing problems
ICD-10 Codes:
- R1314: Dysphagia, pharyngoesophageal phase
What procedures does a Gastroenterologist like Dr. Merrifield typically perform?
As a Gastroenterologist, Dr. Merrifield 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. Merrifield. 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:
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
CPT Codes:
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
Also known as:
- Diagnostic Upper Endoscopy with Biopsy
- Esophagus Widening Procedure (Endoscopic)
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Esophageal Dilation
- EGD with Dilation
- Upper Endoscopy with Widening
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 43248: Esophagogastroduodenoscopy, flexible, transoral; with insertion of guide wire followed by passage of dilator(s) through esophagus over guide wire
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:
- Stopping Bleeding in Esophagus, Stomach, or Duodenum
- EGD with Bleeding Control
- Upper GI Endoscopy for Bleeding
- Gastric Bleeding Treatment
CPT Codes:
- 43255: Esophagogastroduodenoscopy, flexible, transoral; with control of bleeding, any method
Does Dr. Merrifield accept my insurance?
Dr. Merrifield accepts most major insurance plans. Important: Please call our office at (360) 413-8250 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Merrifield accept in Olympia, WA?
Dr. Merrifield in Olympia, WA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Centene Corporation
CVS Health (formerly Aetna)
Federal government of the United States
Humana
Kaiser Permanente
Medicare
Molina Healthcare
State of Washington
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Merrifield's office located?
Dr. Benjamin Merrifield's Primary Practice
209 Lilly Rd NE
Olympia, WA 98506
(360) 413-8250
What is Dr. Merrifield's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Merrifield's National Provider Identifier (NPI) number is 1083695167.
What common questions do patients ask about Dr. Merrifield?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Merrifield
What is Dr. Benjamin Merrifield's specialty?
Dr. Merrifield is a Gastroenterologist near Olympia, WA.
What does a Gastroenterologist do?
An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs.
Is this Dr. Benjamin Merrifield affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Merrifield is affiliated with Providence St. Peter Hospital 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 Gastroenterologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Gastroenterologist. 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 Benjamin Merrifield accepting new patients in Olympia, WA?
Yes, Dr. Benjamin Merrifield is accepting new patients at this time.
Does Dr. Benjamin Merrifield offer online booking?
Please contact Dr. Merrifield's office at (360) 413-8250 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Benjamin Merrifield?
Please contact Dr. Merrifield's office at (360) 413-8250 for information regarding telehealth appointment availability or for scheduling assistance.
Other Gastroenterologist Near Olympia, WA
MK
Gastroenterologist
Dr. Maria Theresa Kurtz, DO is a Gastroenterologist, who primarily practices in Olympia, WA.
Olympia, WA
MC
Gastroenterologist
Dr. Mark Cumings, MD is a Gastroenterologist, who primarily practices in Olympia, WA with 2 additional practice locations.
Olympia, WA

Gastroenterologist
Dr. Harpreet Brar, MD is a Gastroenterologist, who primarily practices in Olympia, WA with 2 additional practice locations. He has been practicing for over 30 years and is board certified.
Olympia, WA