Wataru Tamura, MD

Medicare activity in 2024

Official CMS public-use data for Wataru Tamura, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)106 services
2. Biopsy of large bowel using a flexible endoscope (45380)87 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)72 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)64 services
5. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)41 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High cholesterol66%
• High blood pressure53%
• Arthritis40%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%
• Anxiety20%
• Depression19%

Hospitals where Wataru Tamura works

Medicare's Facility Affiliation Data lists Wataru Tamura at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Swedish Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500027

Practice locations

Addresses where Wataru Tamura is enrolled with Medicare (CMS data updated October 2, 2026).

• 11027 Meridian Ave N, Suite 100Seattle, WA 98133 (206) 365‑4492

Group practices

Medicare enrollment lists Wataru Tamura as a member of this group (CMS data updated October 2, 2026).

• Puget Sound Gastroenterology PLLC61 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in Washington →

Other gastroenterologists in Seattle

Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.

• Corey Saraceni, MD
• Isabel A. Hujoel, MD
• Christopher J. Carlson, MD
• John T. Brooling, MD
• Ling Guo, MD
• Rex G. Cheng, MD
• Christian L. Horn, MD
• Renuka Bhattacharya, MD

All gastroenterologists in Seattle →

Other clinicians in Puget Sound Gastroenterology PLLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Benjamin F. Merrifield, MD
• John B. Carpenter, MD
• Gregory R. Bernstein, MD
• Joseph K. Kim, MD
• Alina Gavrila, MD
• Katherine E. Hill

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians