William Kowallis

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

3071460 Issued in ID

Practice address

500 W Fort St # 111R
Boise, ID 83702-4599

Phone

(208) 422-1000

NPI assigned

Mar 22, 2025

Last updated

Jun 1, 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 1

Addresses

Medicare fee-for-service enrollment

Enrolled in ID

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

Medicare enrollment (NPD)

Enrolled

State licenses

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

{
    "created_epoch": "1742601600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748736000000",
    "number": "1053112227",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2511 S NANTUCKET WAY",
            "city": "BOISE",
            "state": "ID",
            "postal_code": "837065096",
            "telephone_number": "208-890-3492"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 W FORT ST # 111R",
            "city": "BOISE",
            "state": "ID",
            "postal_code": "837024599",
            "telephone_number": "208-422-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOWALLIS",
        "first_name": "WILLIAM",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-03-22",
        "last_updated": "2025-06-01",
        "certification_date": "2025-06-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "ID",
            "license": "3071460",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Trista Manon Kovach, LCPC
• Amanda M Kovacs
• Aaron C Kowalczyk, CRNA
• Ryan M Kowalczyk, DDS
• Jessica Kowallis
• Megan Koyle
• Megan S Koyle, MOT, OTR/L
• Peter Benson Kozisek, M.D.
• Kevin R Krafft, M.D.
• Tanya Soon Lee Krafft, MD

• Internal Medicine Physician in Boise, ID
• Providers in Boise, ID by specialty
• Internal Medicine Physician in Idaho

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 1, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.