Ahdaysia Williamson-McAllister, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

6000 Executive Blvd Ste 304
North Bethesda, MD 20852-3875

Phone

(301) 969-5673

Fax

(240) 448-7737

NPI assigned

Oct 22, 2024

Last updated

Aug 21, 2026By the provider in NPPES

Sex

Female

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 MD

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.meditouchehr.com/api/fhir/r4/

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.

• Nutrihealth LLC

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  MD

  Medicare reassignment NPD
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  • NPI 1073806089
  Medicare reassignment

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

{
    "created_epoch": "1729555200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787270400000",
    "number": "1083435044",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "402 BIG SAM CIR",
            "city": "LOGANVILLE",
            "state": "GA",
            "postal_code": "300528010",
            "telephone_number": "540-841-6033"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6000 EXECUTIVE BLVD STE 304",
            "city": "NORTH BETHESDA",
            "state": "MD",
            "postal_code": "208523875",
            "telephone_number": "301-969-5673",
            "fax_number": "240-448-7737"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMSON-MCALLISTER",
        "first_name": "AHDAYSIA",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-10-22",
        "last_updated": "2026-08-21",
        "certification_date": "2026-08-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Physician Assistant in North Bethesda, MD
• Providers in North Bethesda, MD by specialty
• Physician Assistant in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 21, 2026; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.