William B Hillegass Jr., MD

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

32921 Issued in MS

Practice address

Select Specialty - Cardiology
5903 Ridgewood Road
Jackson, MS 39211-1900

Phone

(601) 984-5678

NPI assigned

Jun 30, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MS

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal MedicineAlso: Cardiovascular Disease (Cardiology)

Education

Harvard Medical School, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

State of Mississippi - University of Mississippi Medical CenterGroup PAC ID 1850293036, 956 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Mississippi Med Center Hospital, Jackson, MS, CCN 250001

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: whillegass202680@ummc.direct-ci.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• State of Mississippi - University of Mississippi Medical Center

  • General Acute Care Hospital
  • Jackson, MS
  • NPI 1154317527
  Medicare reassignment Care Compare group NPD
• State of Mississippi - University of Mississippi Medical Center

  • Prosthetic/Orthotic Supplier
  • Jackson, MS
  • NPI 1235019530
  NPD
• State of Mississippi - University of Mississippi Medical Center

  • Internal Medicine Physician
  • Canton, MS
  • NPI 1760285936
  NPD
• University Physicians, PLLC

  • Internal Medicine Physician
  • Jackson, MS
  • NPI 1609984574
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• State of Mississippi - University of Mississippi Medical Center

  • General Acute Care Hospital
  • Jackson, MS
  • NPI 1154317527
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1151625600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756339200000",
    "number": "1619906112",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 11407, DEPT 2130",
            "city": "BIRMINGHAM",
            "state": "AL",
            "postal_code": "352462301",
            "telephone_number": "601-984-5678",
            "fax_number": "601-984-5638"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "SELECT SPECIALTY - CARDIOLOGY",
            "address_2": "5903 RIDGEWOOD ROAD",
            "city": "JACKSON",
            "state": "MS",
            "postal_code": "392111900",
            "telephone_number": "601-984-5678"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HILLEGASS",
        "first_name": "WILLIAM",
        "middle_name": "B",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-30",
        "last_updated": "2025-08-28",
        "certification_date": "2025-08-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "MS",
            "license": "32921",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rebecca Faulkner Hill, PNP
• Shawn L Hill
• Teresa F Hill, MSN, NP-C, BC
• Tesha Hill
• Willie James Hill, D.D.S.
• Michael Hillerman, LPC
• Sarah Hillhouse
• Willie Hilliard III
• Katherine Lois Hilton, LPC
• Jamie Himes, LPC

• Cardiovascular Disease Physician in Jackson, MS
• Providers in Jackson, MS by specialty
• Cardiovascular Disease Physician in Mississippi

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 28, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.