Quick answers
- Does Andrew C. Chiu accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew C. Chiu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Andrew C. Chiu see?
- In 2024, CMS data shows 327 Original Medicare patients and 496 services for Andrew C. Chiu. This counts Original Medicare only and measures volume, not quality.
- What is Andrew C. Chiu's NPI number?
- 1841239407. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Andrew C. Chiu, 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.
| Original Medicare patients | 327 |
|---|---|
| Services billed to Medicare | 496 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)133 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)73 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)38 services
- Ultrasound of heart blood flow, valves and chambers, follow-up (93321)35 services
- Ultrasound of heart with color-depicted blood flow, rate and valve function (93325)35 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%
- Ischemic heart disease52%
- Heart failure48%
- Arthritis44%
- Atrial fibrillation44%
Hospitals where Andrew C. Chiu works
Medicare's Facility Affiliation Data lists Andrew C. Chiu 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.
- Essentia Health DuluthDuluth, MN · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 240019
- Essentia Health Moose LakeMoose Lake, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241350
- Essentia Health St Mary's Medical CenterDuluth, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240002
- Essentia Health VirginiaVirginia, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 240084
- St Marys Hospital SuperiorSuperior, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521329
Practice locations
Addresses where Andrew C. Chiu is enrolled with Medicare (CMS data updated October 2, 2026).
- 1101 9th St NVirginia, MN 55792 (218) 741‑0150
- 1413 Hwy 33 SCloquet, MN 55720 (218) 337‑4000
- 400 E 3rd StDuluth, MN 55805 (218) 786‑8364
- 402 E 2nd StDuluth, MN 55805 (218) 786‑3443
Group practices
Medicare enrollment lists Andrew C. Chiu as a member of these groups (CMS data updated October 2, 2026).
- The Duluth Clinic Ltd1,144 clinicians in the group
- St Marys Medical Center93 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Minnesota →
Other cardiologists in Minnesota
Clinicians with the same Medicare primary specialty in Minnesota — not a recommendation.
Other clinicians in The Duluth Clinic Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1841239407 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians