Ian K. Tseng, MD

Medicare activity in 2024

Official CMS public-use data for Ian K. Tseng, 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. Ct scan head or brain without contrast (70450)443 services
2. Ct scan of abdomen and pelvis with contrast (74177)367 services
3. Ct scan of abdomen and pelvis without contrast (74176)166 services
4. Ct scan of upper spine without contrast (72125)154 services
5. Ct scan of blood vessels of chest with contrast (71275)140 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%
• Diabetes57%
• Arthritis53%
• Chronic kidney disease47%
• Ischemic heart disease46%

Hospitals where Ian K. Tseng works

Medicare's Facility Affiliation Data lists Ian K. Tseng 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.

• Methodist Hospitals IncGary, IN · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 150002
• Saint Agnes Medical CenterFresno, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050093

Practice locations

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

• 1510 E Herndon Ave, Suite 110Fresno, CA 93720 (559) 450‑6742
• 1510 E Herndon Ave, Suite 230Fresno, CA 93720 (559) 450‑2663
• 600 Grant StGary, IN 46402 (219) 886‑4000
• 8701 BroadwayMerrillville, IN 46410 (219) 738‑5500

Group practices

Medicare enrollment lists Ian K. Tseng as a member of these groups (CMS data updated October 2, 2026).

• Saint Agnes Medical Foundation161 clinicians in the group
• N W Indiana Radiology Services, PC15 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in California →

Other radiologists in Fresno

Clinicians with the same Medicare primary specialty in Fresno, CA — not a recommendation.

• Ceayee Mak, MD
• Michael J. Kessler, MD
• Lin H. Bailey, MD
• Siva P. Jasti, MD
• Tyler Gasser, MD
• Ashkan Heshmatzadeh Behzadi, MD
• Stephen A. Balfour, MD
• Kalind Parashar, MD

All radiologists in Fresno →

Other clinicians in Saint Agnes Medical Foundation

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

• Ceayee Mak, MD
• Jasdeep K. Dhillon, NP
• Michael J. Kessler, MD
• Richard D. Gregory, MD
• Danielle Malvini, DO
• Catalin Nicola, MD

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