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Dr. Matthew Casimo, MD

Gastroenterology (Gastroenterology Physician)

700 Ne 87th Ave
Vancouver, WA 98664

Who else practices at this address →

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) 397-1500

  • Medicare participating

At a glance

Years since graduation
42
In the NPI registry since
2006
Medicare patients seen, 2024
192

Licensed in Washington since 1989, 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

  • 1984Medical school: University of Vermont College 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
    WA license MD00026445 (first issued 1989; active)

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

Medical groups

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
192
Services billed
531
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito7468
Insertion of needle into vein for collection of blood sample5937
Removal of polyps or growths of large bowel using an endoscope with mechanical snare4949
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope3331
Complete blood cell count (red cells, white blood cell, platelets), automated test3116
Established patient office or other outpatient visit, 30-39 minutes2626
New patient office or other outpatient visit, 45-59 minutes2121
Biopsy of large bowel using a flexible endoscope2121
Established patient office or other outpatient visit, 40-54 minutes2019
Established patient office or other outpatient visit, 20-29 minutes1717

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
DrugPrescriptions
Sod Sulf-Potass Sulf-Mag Sulf (sodium, potassium,mag sulfates)
Other prescribers in Vancouver, WA
136
Peg 3350-Electrolyte (sodium chloride/nahco3/kcl/peg)87
Omeprazole
Other prescribers in Vancouver, WA
58
Mesalamine
Other prescribers in Vancouver, WA
25
Azathioprine
Other prescribers in Vancouver, WA
23
Balsalazide Disodium17
Lidocaine Hcl Viscous (lidocaine hcl)
Other prescribers in Vancouver, WA
12
Cimzia (2 Pack) (certolizumab pegol)12
Gavilyte-N (sodium chloride/nahco3/kcl/peg)12
Pantoprazole Sodium
Other prescribers in Vancouver, WA
11

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

Other Gastroenterology clinicians in Vancouver

Sources

NPI registry (CMS NPPES, November 2026; record last updated January 21, 2008), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1144275595. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.