Hsu-Hsien S. Lwu, MD

Medicare activity in 2024

Official CMS public-use data for Hsu-Hsien S. Lwu, 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 high level of medical decision making, if using time, 40 minutes or more (99215)25 services
2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)21 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)18 services
4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)12 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%
• Arthritis72%
• Anxiety38%
• Diabetes34%
• Ischemic heart disease33%

Hospitals where Hsu-Hsien S. Lwu works

Medicare's Facility Affiliation Data lists Hsu-Hsien S. Lwu 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.

• CHI St Alexius HealthBismarck, ND · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 350002
• CHI St Alexius Health DickinsonDickinson, ND · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 351336
• Mobridge Regional Hospital - CAHMobridge, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431325

Practice locations

Addresses where Hsu-Hsien S. Lwu is enrolled with Medicare (CMS data updated October 2, 2026).

• 900 E Broadway AveBismarck, ND 58501 (701) 530‑7000

Group practices

Medicare enrollment lists Hsu-Hsien S. Lwu as a member of this group (CMS data updated October 2, 2026).

• St Alexius Medical Center238 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in North Dakota →

Other neurosurgeons in Bismarck

Clinicians with the same Medicare primary specialty in Bismarck, ND — not a recommendation.

• Steven G. Kraljic, MD
• Eric Belanger, MD
• Eric M. Altschuler, MD
• Artur Szymczak, MD

All neurosurgeons in Bismarck →

Other clinicians in St Alexius Medical Center

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

• Cassidy L. Freeman, NP
• Marwan Mashina, MD
• Christopher Ottemoeller, NP
• Ashley Murrey, NP
• Lyfong S. Lor, MD
• Tessa Marburger, 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