William Hsu, MD
NPI 1578854725 · Internal Medicine Physician · Evansville, IN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hsu, MD is a Internal Medicine Physician provider in Evansville, IN (NPI 1578854725).
Provider details
- NPI number
- 1578854725
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 24560 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
325 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 158 | $75 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 60 | $110 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 29 | $162 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 29 | $110 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 27 | $127 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 22 |
Practice location
Mailing address
Additional practice locations (2)
- 1 Medical Center DrLebanon, NH 03756-1000Phone: (603) 650-5000
- 3073 White Mountain HwyNorth Conway, NH 03860-7101Phone: (603) 356-5461Fax: (603) 356-9048
Registry dates
- Enumerated
- 2011-04-22
- Last updated
- 2025-12-23
- Certified
- 2025-12-23
Frequently asked questions
- What is William Hsu's NPI number?
- William Hsu's National Provider Identifier (NPI) is 1578854725, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hsu's specialty?
- William Hsu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Hsu located?
- William Hsu's practice location on file with NPPES is 3700 Washington Ave, Evansville, IN 47714-0541.
- What is William Hsu's phone number?
- The practice phone number listed in the NPPES registry for William Hsu is (812) 485-4000.
- Does William Hsu accept Medicare?
- William Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hsu's NPI active?
- Yes — William Hsu's NPI (1578854725) is active in the NPPES registry as of the last update on 2025-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.