Dr. Sandi L. Fields, MD

Gastroenterology (Gastroenterology Physician)

400 Ne Mother Joseph Pl
Vancouver, WA 98664

Clark County includes primary care (18% of residents) and dental (4% of residents) and mental health (11% of residents) shortage areas. About shortage areas

Call (360) 514-2000

Medicare participating

Medical school: West Virginia University School of Medicine (1994)
Years since graduation: 32
In the NPI registry since: 2006
Medicare patients seen, 2024: 201

Licensed in Washington since 2020, according to the Washington State Department of Health. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

1994Medical school: West Virginia University School of Medicine
2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

Gastroenterology Physician primary
OR license MD204289 · NC license 9501324 · WA license 61021236 (first issued 2020; active)
Internal Medicine Physician
NC license 9501324

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Gastroenterology per capita by county →

Where they work

Hospitals

Salem Hospital Salem, OR
Peacehealth Southwest Medical Cente Vancouver, WA
Salem Health West Valley Dallas, OR

Medical groups

Peacehealth (249 clinicians)

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024: 201
Services billed: 432
Patients’ average age: 72

Most frequent Medicare services, 2023
Service	Times	Patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare	72	72
New patient office or other outpatient visit, 45-59 minutes	57	57
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	48	48
Established patient office or other outpatient visit, 30-39 minutes	31	29
New patient office or other outpatient visit, 30-44 minutes	16	16
Established patient office or other outpatient visit, 20-29 minutes	14	13
Insertion of guide wire with dilation of esophagus using a flexible endoscope	14	13
Biopsy of large bowel using a flexible endoscope	13	13
Colorectal cancer screening; colonoscopy on individual at high risk	12	12

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
Drug	Prescriptions
Omeprazole Other prescribers in Vancouver, WA	101
Pantoprazole Sodium Other prescribers in Vancouver, WA	69
Sod Sulf-Potass Sulf-Mag Sulf (sodium, potassium,mag sulfates) Other prescribers in Vancouver, WA	62
Famotidine Other prescribers in Vancouver, WA	45
Linzess (linaclotide) Other prescribers in Vancouver, WA	23
Gavilyte-G (peg3350/sod sulf,bicarb,cl/kcl) Other prescribers in Vancouver, WA	17
Furosemide Other prescribers in Vancouver, WA	14
Spironolactone Other prescribers in Vancouver, WA	13
Peg-3350 And Electrolytes (peg3350/sod sulf,bicarb,cl/kcl) Other prescribers in Vancouver, WA	11

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

At a glance