WILLIAM B HILLEGASS JR. MD
NPI 1619906112
Internal Medicine - Cardiovascular Disease in Jackson, MS
About William B Hillegass Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM B HILLEGASS JR. MD (NPI 1619906112) is an individual cardiovascular disease provider in Jackson, Mississippi, licensed in Mississippi (32921) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Mississippi Med Center, and is a graduate of Harvard Medical School (1988).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William B Hillegass Jr. 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Mississippi Med Center
Acute Care Hospitals · Jackson, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39211 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Hillegass's NPI number?
The NPI number for William Hillegass is 1619906112. It was assigned to this individual provider in the NPPES registry on June 30, 2006.
Where is William Hillegass located?
William Hillegass practices at Select Specialty - Cardiology 5903 Ridgewood Road, Jackson, MS 39211. The listed phone number is (601) 984-5678.
What is William Hillegass's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is William Hillegass enrolled in Medicare?
Yes. William Hillegass 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.
Is William Hillegass affiliated with any hospitals?
According to CMS data, William Hillegass is affiliated with University Of Mississippi Med Center.
When was this NPI record last updated?
The NPPES record for William Hillegass was last updated on August 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 B Hillegass Jr., MD · NPI 1619906112
Cardiovascular Disease physician in Jackson, Mississippi. Individual provider, active in the CMS NPPES registry since June 30, 2006.
## Identity
- **NPI:** 1619906112 (Entity type: Individual)
- **Enumerated:** June 30, 2006
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 32921 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** SELECT SPECIALTY - CARDIOLOGY, 5903 RIDGEWOOD ROAD, Jackson, MS 39211-1900
- **Phone:** (601) 984-5678
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Harvard Medical School, class of 1988
## Record status
- **NPPES last updated:** August 28, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1619906112) · Data from the CMS NPPES public registry.