William Hsu, MD
Internal Medicine Physician · Evansville, IN
William Hsu, MD is an internal medicine physician with a practice address in Evansville, Indiana, and NPI 1578854725, issued on Apr 22, 2011. Check the license (Indiana 01080315A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- William Hsu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 01080315A IN
24560 NH
072370 GA
Self-reported in NPPES; status is on the state search - Practice location
- 3700 Washington Ave, Evansville, IN 47714
- Phone
- (812) 485-4000
- Enumerated
- Apr 22, 2011
- Record last updated
- Dec 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20240123003312); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 3700 Washington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01080315ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
106 Medicare Part D claims for 59 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 4 group practices
- Carepoint Hospital Medicine Kansas LLCWichita, KS
- Memorial HospitalNorth Conway, NH
- Southwestern Vermont Medical Center, IncBennington, VT
- St Vincent Physician Services Hospital And Health Care CenterIndianapolis, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Hsu among 2,109 internal medicine physician records in Indiana
William Hsu, MD is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 62% of them.
- NPI issued2011 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2005 among the 1,448 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 internal medicine physician records list a practice address in Evansville
They are 97 of the 4,352 NPPES records with a practice address in Evansville, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Evansville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Donald Elshoff, MDEvansville, IN 477141205813698
- Nigel Islam, MDEvansville, IN 477141942240890
- Stephen Koewler, MDEvansville, IN 477141467439844
- Bryan Laura, MDEvansville, IN 477141346227725
- James Maserejian, MDEvansville, IN 477141326080037
- Divya Patel, MDEvansville, IN 477141184678419
Common questions
What is William Hsu, MD's NPI number?
William Hsu, MD's National Provider Identifier (NPI) is 1578854725, issued on Apr 22, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William Hsu, MD located?
The NPPES record lists a practice address at 3700 Washington Ave, Evansville, IN, 47714. Phone: (812) 485-4000. Providers update this record themselves, so call before visiting.
How can I verify William Hsu, MD's license?
NPPES lists Indiana license number 01080315A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Hsu, MD prescribe under Medicare Part D?
In 2024, William Hsu, MD had 106 Medicare Part D claims for 59 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.