WILLIAM HSU MD
NPI 1578854725
Internal Medicine in Evansville, IN
About William Hsu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM HSU MD (NPI 1578854725) is an individual internal medicine provider in Evansville, Indiana, licensed in New Hampshire (24560) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Ascension St Vincent Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William Hsu Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
11Medicare enrollment records show William Hsu reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Indianapolis, IN 46260
- Reassigned Medicare billing, Indiana enrollment
- 510 clinicians in this Medicare group
Mcminnville, TN 37110
- Reassigned Medicare billing, Tennessee enrollment
- 40 clinicians in this Medicare group
Gainesville, GA 30501
- Reassigned Medicare billing, Georgia enrollment
- 1,172 clinicians in this Medicare group
Atlanta, GA 30342
- Reassigned Medicare billing, Georgia enrollment
- 783 clinicians in this Medicare group
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 2,681 clinicians in this Medicare group
Albany, GA 31707
- Reassigned Medicare billing, Georgia enrollment
- Medicare enrollment name: Phoebe Physician Group Inc
- 1,118 clinicians in this Medicare group
Wichita, KS 67214
- Reassigned Medicare billing, Kansas enrollment
- 71 clinicians in this Medicare group
Bennington, VT 05201
- Reassigned Medicare billing, Vermont enrollment
- 143 clinicians in this Medicare group
Keene, NH 03431
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension St Vincent Hospital
Acute Care Hospitals · Indianapolis, INSusan B Allen Memorial Hospital
Acute Care Hospitals · El Dorado, KSWesley Medical Center
Acute Care Hospitals · Wichita, KSBrattleboro Memorial Hospital
Acute Care Hospitals · Brattleboro, VTSouthwestern Vermont Medical Center
Acute Care Hospitals · Bennington, VTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 47714 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
EVANSVILLE, IN 47714
EVANSVILLE, IN 47714
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Hsu's NPI number?
The NPI number for William Hsu is 1578854725. It was assigned to this individual provider in the NPPES registry on April 22, 2011.
Where is William Hsu located?
William Hsu practices at 3700 Washington Ave, Evansville, IN 47714. The listed phone number is (812) 485-4000.
What is William Hsu's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Hsu enrolled in Medicare?
Yes. William Hsu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Hsu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Hsu reassigns Medicare benefits to 11 organizations: St Vincent Physician Services Hospital And Health Care Center (Indianapolis, IN), Pepper Branch Physician Services, PC (Mcminnville, TN), Northeast Georgia Physicians Group Inc (Gainesville, GA), North Atlanta Professional Services LLC (Atlanta, GA), Emory Medical Care Foundation Inc (Atlanta, GA) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Hsu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Hsu accept?
Health plans from Blue Cross and Blue Shield of Kansas, Inc., CareSource and Oscar Insurance Company list William Hsu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Hsu affiliated with any hospitals?
According to CMS data, William Hsu is affiliated with Ascension St Vincent Hospital, Susan B Allen Memorial Hospital, Wesley Medical Center, Brattleboro Memorial Hospital and Southwestern Vermont Medical Center.
When was this NPI record last updated?
The NPPES record for William Hsu was last updated on December 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William Hsu, MD · NPI 1578854725
Internal Medicine physician in Evansville, Indiana. Individual provider, active in the CMS NPPES registry since April 22, 2011.
## Identity
- **NPI:** 1578854725 (Entity type: Individual)
- **Enumerated:** April 22, 2011
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 24560 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 3700 WASHINGTON AVE, Evansville, IN 47714-0541
- **Phone:** (812) 485-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 11 organizations under Medicare reassignment (form CMS-855R): St Vincent Physician Services Hospital And Health Care Center (NPI 1669422234, Indianapolis, IN); Pepper Branch Physician Services, PC (NPI 1740978501, Mcminnville, TN); Northeast Georgia Physicians Group Inc (NPI 1891745212, Gainesville, GA); North Atlanta Professional Services LLC (NPI 1316959869, Atlanta, GA); Emory Medical Care Foundation Inc (NPI 1063452381, Atlanta, GA); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** December 23, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1578854725) · Data from the CMS NPPES public registry.