William Harrison McAllister, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

91777 Issued in SC

Practice address

169 Ashley Avenue
Room 202 Main Hospital Msc333
Charleston, SC 29425

Phone

(843) 792-9570

NPI assigned

Apr 12, 2021

Last updated

Nov 3, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in SC

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

Pediatric MedicineAlso: Hospitalist

Education

Other, 2021

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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

• Bon Secours St Francis Xavier Hospital, Inc.

  • Cardiovascular Disease Physician
  • Charleston, SC
  • NPI 1740502822
  Medicare reassignment NPD
• Bon Secours St. Francis Xavier Hospital, Inc.

  dba Roper St. Francis Perinatal Center

  • Maternal & Fetal Medicine Physician
  • Charleston, SC
  • NPI 1336546480
  NPD
• Bon Secours St. Francis Xavier Hospital, Inc.

  dba Roper St. Francis Healthcare Pediatrics

  • Pediatrics Physician
  • Charleston, SC
  • NPI 1982583068
  NPD

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

{
    "created_epoch": "1618185600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762128000000",
    "number": "1194305292",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "169 ASHLEY AVE",
            "city": "CHARLESTON",
            "state": "SC",
            "postal_code": "294258905"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "169 ASHLEY AVENUE",
            "address_2": "ROOM 202 MAIN HOSPITAL MSC333",
            "city": "CHARLESTON",
            "state": "SC",
            "postal_code": "29425",
            "telephone_number": "843-792-9570"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2095 Henry Tecklenburg Dr",
            "address_purpose": "LOCATION",
            "city": "Charleston",
            "state": "SC",
            "postal_code": "294145733",
            "country_code": "US",
            "telephone_number": "843-402-1634",
            "fax_number": "843-402-1550",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MCALLISTER",
        "first_name": "WILLIAM",
        "middle_name": "HARRISON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-12",
        "last_updated": "2025-11-03",
        "certification_date": "2025-11-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "OH",
            "license": "57.251574",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "SC",
            "license": "91777",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "SC",
            "license": "91777",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Justin Redrick McAbee, DMD
• Douglas McAdams, MD
• Jack McAdory, CRNA
• Sara Hood McAleer, RD
• John William McAlhany III, MD
• Angela D McAmis, CRNA
• Leah Schrier McBee, M.D.
• Morgan Parker McBee
• Erin R McBride, AGNP-C
• Jessica Lynn McBride, BSN, MSN, FNP-BC

• Pediatrics Physician in Charleston, SC
• Providers in Charleston, SC by specialty
• Pediatrics Physician in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 3, 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.