I-Hsun Liang, M.D.
NPI 1083925887 · Anesthesiology Physician · Waterbury, CT
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
I-Hsun Liang, M.D. is a Anesthesiology Physician provider in Waterbury, CT (NPI 1083925887).
Provider details
- NPI number
- 1083925887
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD471930 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
246 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 149 | $82 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 29 | $66 |
| Anesthesia for Retinal Surgery00145 | 22 | $97 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 18 | $91 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 17 | $91 |
| Anesthesia for Other Procedure on Eye00140 | 11 | $92 |
Typical Medicare-allowed amounts for these services range $66–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Practice location
Mailing address
Additional practice locations (1)
- 896 Middlebury Rd Ste 100Middlebury, CT 06762-2403Phone: (203) 573-6000
Registry dates
- Enumerated
- 2010-06-25
- Last updated
- 2023-11-20
- Certified
- 2023-11-20
Frequently asked questions
- What is I-Hsun Liang's NPI number?
- I-Hsun Liang's National Provider Identifier (NPI) is 1083925887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is I-Hsun Liang's specialty?
- I-Hsun Liang is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is I-Hsun Liang located?
- I-Hsun Liang's practice location on file with NPPES is 64 Robbins St, Waterbury, CT 06708-2613.
- What is I-Hsun Liang's phone number?
- The practice phone number listed in the NPPES registry for I-Hsun Liang is (203) 573-6000.
- Does I-Hsun Liang accept Medicare?
- I-Hsun Liang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is I-Hsun Liang's NPI active?
- Yes — I-Hsun Liang's NPI (1083925887) is active in the NPPES registry as of the last update on 2023-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.