Iwao K. Tanaka, MD

Medicare activity in 2024

Official CMS public-use data for Iwao K. Tanaka, 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. X-ray of chest, 1 view (71045)639 services
2. Ct scan head or brain without contrast (70450)404 services
3. X-ray of knee, 4 or more views (73564)270 services
4. X-ray of chest, 2 views (71046)242 services
5. Screening 3d breast mammography (77063)241 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 blood pressure75%
• High cholesterol75%
• Arthritis60%
• Anxiety36%
• Diabetes32%
• Depression29%

Hospitals where Iwao K. Tanaka works

Medicare's Facility Affiliation Data lists Iwao K. Tanaka 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.

• Geisinger Medical CenterDanville, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390006
• UPMC ColeCoudersport, PA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 391313
• UPMC MuncyMuncy, PA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 391301
• UPMC WilliamsportWilliamsport, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390045
• WellSpan Evangelical Community HospitalLewisburg, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390013

Practice locations

Addresses where Iwao K. Tanaka is enrolled with Medicare (CMS data updated October 2, 2026).

• 1100 Grampian BlvdWilliamsport, PA 17701 (570) 326‑8171
• 1112 Grampian BlvdWilliamsport, PA 17701 (570) 326‑8355
• 1205 River AveWilliamsport, PA 17701 (570) 320‑7407
• 140 W 22nd StNew York, NY 10011 (570) 322‑1161
• 900 Plaza DrMontoursville, PA 17754 (570) 601‑8550

Group practices

Medicare enrollment lists Iwao K. Tanaka as a member of this group (CMS data updated October 2, 2026).

• Susquehanna Imaging Associates, Inc.8 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Pennsylvania →

Other radiologists in Williamsport

Clinicians with the same Medicare primary specialty in Williamsport, PA — not a recommendation.

• John C. Becker, DO
• Justin B. Bigger, MD
• David Quintana, MD
• Prakash G. Koshy, MD
• Margaret Fynes, MD
• Ann M. McGeehan, MD
• Mark W. Hogge, MD
• Ralph Pinchinat, DO

All radiologists in Williamsport →

Other clinicians in Susquehanna Imaging Associates, Inc.

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

• John C. Becker, DO
• David Quintana, MD
• Prakash G. Koshy, MD
• Margaret Fynes, MD
• Mark W. Hogge, MD
• Ralph Pinchinat, DO

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