Chung-Yu Hsiao, M.D.
NPI 1275796484 · Emergency Medicine Physician · Waterbury, CT
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chung-Yu Hsiao, M.D. is a Emergency Medicine Physician provider in Waterbury, CT (NPI 1275796484).
Provider details
- NPI number
- 1275796484
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MT193044 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
275 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 128 | $178 |
| Critical Care, First 30-74 Minutes99291 | 58 | $216 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 52 | $123 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 37 | $8 |
Typical Medicare-allowed amounts for these services range $8–$216 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 38 | 37 |
| Prednisone | 31 | 31 |
| Ondansetronbrand: Ondansetron Odt | 29 | 29 |
| Tramadol Hcl | 14 | 14 |
| Ibuprofen | 13 | 13 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 11 | 11 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-08
- Last updated
- 2021-11-12
- Certified
- 2021-11-12
Frequently asked questions
- What is Chung-Yu Hsiao's NPI number?
- Chung-Yu Hsiao's National Provider Identifier (NPI) is 1275796484, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chung-Yu Hsiao's specialty?
- Chung-Yu Hsiao is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chung-Yu Hsiao located?
- Chung-Yu Hsiao's practice location on file with NPPES is 56 Franklin St, Waterbury, CT 06706-1253.
- What is Chung-Yu Hsiao's phone number?
- The practice phone number listed in the NPPES registry for Chung-Yu Hsiao is (203) 709-6004.
- Does Chung-Yu Hsiao accept Medicare?
- Chung-Yu Hsiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chung-Yu Hsiao's NPI active?
- Yes — Chung-Yu Hsiao's NPI (1275796484) is active in the NPPES registry as of the last update on 2021-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.