Willem J Van Der Werf, M.D.

Primary specialty

Transplant Surgery PhysicianTaxonomy code 204F00000X

License

49927 Issued in AZ

Practice address

2218 N 3Rd St
Phoenix, AZ 85004-1401

Phone

(602) 252-2543

Fax

(602) 252-3861

NPI assigned

Jul 4, 2006

Last updated

Sep 2, 2026By 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 2

Addresses

Other identifiers 6

Medicare fee-for-service enrollment

Enrolled in AZ

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

General Surgery

Education

University of California, San Francisco School of Medicine, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Arizona Transplant Associates PCGroup PAC ID 3971587742, 5 clinicians

St. Joseph's Hospital and Medical CenterGroup PAC ID 6709863178, 23 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Josephs Hospital and Medical Center Hospital, Phoenix, AZ, CCN 030024
• Banner - University Medical Center Phoenix Hospital, Phoenix, AZ, CCN 030002

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/CAHCCA/Endpoint/CAHCCA

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.

• Arizona Transplant Associates, PC

  • Transplant Surgery Physician
  • Phoenix, AZ
  • NPI 1447344908
  Medicare reassignment Care Compare group NPD
• St. Joseph's Hospital and Medical Center

  dba SJHMC Trauma Services

  • Emergency Care Clinic/Center
  • Phoenix, AZ
  • NPI 1255382412
  Medicare reassignment Care Compare group NPD
• Arizona Transplant Associates, P.C.

  • Specialist
  • Phoenix, AZ
  • NPI 1366863524
  NPD
• Belnap Surgical Associates PC

  • Specialist
  • Salt Lake City, UT
  • NPI 1114097508
  NPD (past)
• Canyon Surgical Associates, LLC

  • Specialist
  • Murray, UT
  • NPI 1073534970
  NPD (past)

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

• Banner - University Medical Center Phoenix

  • General Acute Care Hospital
  • Phoenix, AZ
  • NPI 1841224870
  Care Compare affiliation
• Dignity Health

  dba St. Josephs Hospital and Medical Center Emergency Dept-Litchfield Park

  • Emergency Care Clinic/Center
  • Litchfield Park, AZ
  • NPI 1265065445

  Hospital

  Care Compare affiliation
• Dignity Health

  dba St. Josephs Hospital and Medical Center Emergency Dept-Glendale

  • Emergency Care Clinic/Center
  • Glendale, AZ
  • NPI 1609408665

  Hospital

  Care Compare affiliation
• Dignity Health

  dba St. Joseph's Hospital and Medical Center

  • General Acute Care Hospital
  • Phoenix, AZ
  • NPI 1982733655
  Care Compare affiliation
• Dignity Health

  dba St. Joseph's Westgate Medical Center

  • General Acute Care Hospital
  • Glendale, AZ
  • NPI 1992131734
  Care Compare affiliation

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

{
    "created_epoch": "1151971200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788307200000",
    "number": "1275563397",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2218 N 3RD ST",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850041401",
            "telephone_number": "602-252-2543",
            "fax_number": "602-252-3861"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2218 N 3RD ST",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850041401",
            "telephone_number": "602-252-2543",
            "fax_number": "602-252-3861"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "500 W Thomas Rd Ste 300",
            "address_purpose": "LOCATION",
            "city": "Phoenix",
            "state": "AZ",
            "postal_code": "850134294",
            "country_code": "US",
            "telephone_number": "602-406-8000",
            "fax_number": "602-406-3111",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "VAN DER WERF",
        "first_name": "WILLEM",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-04",
        "last_updated": "2026-09-02",
        "certification_date": "2026-09-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "UT",
            "license": "5249271205",
            "primary": false
        },
        {
            "code": "204F00000X",
            "taxonomy_group": "",
            "desc": "Transplant Surgery",
            "state": "AZ",
            "license": "49927",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "119626000",
            "state": "WY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ALTIUS",
            "identifier": "QM000006442",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA",
            "identifier": "4658850",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS BLUE SHIELD",
            "identifier": "52492781200001",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "806894300",
            "state": "ID"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MOLINA",
            "identifier": "TPRA07781",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Amber Van Dam, FNP
• Mark Andrew Van Dam, PT
• Catherine Mary Van Damme, PSYD
• George A Van de Wyngaerde, MD
• Isaiah Van Denend, PT, DPT
• Gary Mitchell Van Derveer, LMT
• Monica Van Dinteren, SLP
• Justin Van Duyne, LMT
• Olivia Claire Van Dyk
• Brynn Van Dyke, D.M.D

• Transplant Surgery Physician in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Transplant Surgery Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 2, 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.
• 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.