Quick answers
- Does Joyce M. Oen Hsiao accept Medicare assignment?
- Yes. Medicare's clinician data says Joyce M. Oen Hsiao 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 Joyce M. Oen Hsiao see?
- In 2024, CMS data shows 1,815 Original Medicare patients and 3,057 services for Joyce M. Oen Hsiao. This counts Original Medicare only and measures volume, not quality.
- What is Joyce M. Oen Hsiao's NPI number?
- 1619159050. 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 Joyce M. Oen Hsiao, 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 | 1,815 |
|---|---|
| Services billed to Medicare | 3,057 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)1,274 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)417 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)297 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)276 services
- Ultrasound of heart, follow-up (93308)103 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%
- Arthritis56%
- Ischemic heart disease53%
- Heart failure47%
- Atrial fibrillation45%
Hospitals where Joyce M. Oen Hsiao works
Medicare's Facility Affiliation Data lists Joyce M. Oen Hsiao 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.
- Bridgeport HospitalBridgeport, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070010
- Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
- Lawrence & Memorial HospitalNew London, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070007
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022
Practice locations
Addresses where Joyce M. Oen Hsiao is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 111 Goose LnGuilford, CT 06437 (203) 747‑7300
- 1450 Chapel St BNew Haven, CT 06511
- 20 York StNew Haven, CT 06510
- 300 Seaside AveMilford, CT 06460 (203) 876‑4000
- 5520 Park AveTrumbull, CT 06611
Group practices
Medicare enrollment lists Joyce M. Oen Hsiao as a member of this group (CMS data updated October 2, 2026).
- Yale University2,645 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Connecticut →
Other cardiologists in Guilford
Clinicians with the same Medicare primary specialty in Guilford, CT — not a recommendation.
Other clinicians in Yale University
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619159050 |
| 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