Quick answers
- Does Horng H. Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Horng H. Chen 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 Horng H. Chen see?
- In 2024, CMS data shows 414 Original Medicare patients and 636 services for Horng H. Chen. This counts Original Medicare only and measures volume, not quality.
- What is Horng H. Chen's NPI number?
- 1073599320. 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 Horng H. Chen, 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 | 414 |
|---|---|
| Services billed to Medicare | 636 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)276 services
- Heart muscle strain imaging (93356)41 services
- Ultrasound of heart with color-depicted blood flow, rate and valve function (93325)40 services
- Ultrasound of heart blood flow, valves and chambers, follow-up (93321)37 services
- Ultrasound of heart, follow-up (93308)34 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%
- Heart failure62%
- Ischemic heart disease51%
- Atrial fibrillation46%
- Arthritis45%
Hospitals where Horng H. Chen works
Medicare's Facility Affiliation Data lists Horng H. Chen 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.
- Mayo Clinic Hospital RochesterRochester, MN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 240010
Practice locations
Addresses where Horng H. Chen is enrolled with Medicare (CMS data updated October 2, 2026).
- 114 Main St SMabel, MN 55954 (507) 493‑5115
- 200 1st St SWRochester, MN 55905 (507) 284‑2511
Group practices
Medicare enrollment lists Horng H. Chen as a member of these groups (CMS data updated October 2, 2026).
- Mayo Clinic4,956 clinicians in the group
- Winneshiek Medical Center101 clinicians in the group
Specialties
Find other Advanced Heart Failure and Transplant Cardiology doctors in Minnesota →
Other heart failure and transplant cardiologists in Minnesota
Clinicians with the same Medicare primary specialty in Minnesota — not a recommendation.
- Lyle J. Olson, MD
- Garvan C. Kane, MD
- Alfredo L. Clavell, MD
- Barry Boilson, MD
- Atta Behfar, MD
- Farris K. Timimi, MD
- Mollie A. Simmons, MD
- Shannon M. Dunlay, MD
All heart failure and transplant cardiologists in Minnesota →
Other clinicians in Mayo Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073599320 |
| 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