Westpac Hematology & Oncology Center Inc

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

Legal business name

WESTPAC HEMATOLOGY & ONCOLOGY CENTER INC

Doing business as

Cancer Center of Guam

Practice address

633 Gov Carlos Camacho Rd Ste B5
Tamuning, GU 96913-3194

Phone

(671) 647-4656

Fax

(671) 647-4660

NPI assigned

Sep 19, 2018

Last updated

Feb 11, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Mrs. Janet Concepcion

Title

Medical Billing Supervisor

Phone

(671) 647-4656

Specialties & licenses 1

Addresses

Other identifiers 1

Other names 1

• Cancer Center of Guam Doing business as

Medicare fee-for-service enrollment

Enrolled in GU

Enrollment records 1

Locations

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Samuel Friedman, M.D.

  • Hematology & Oncology Physician
  • Tamuning, GU
  • NPI 1891747069
  Medicare reassignment NPD
• Ivan Stephen Lowenthal, M.D.

  • Medical Oncology Physician
  • Tamuning, GU
  • NPI 1043245889
  NPD

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

{
    "created_epoch": "1537315200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1739232000000",
    "number": "1467936195",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "633 GOV CARLOS CAMACHO RD STE B5",
            "city": "TAMUNING",
            "state": "GU",
            "postal_code": "969133194",
            "telephone_number": "671-647-4656",
            "fax_number": "671-647-4660"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "633 GOV CARLOS CAMACHO RD STE B5",
            "city": "TAMUNING",
            "state": "GU",
            "postal_code": "969133194",
            "telephone_number": "671-647-4656",
            "fax_number": "671-647-4660"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WESTPAC HEMATOLOGY & ONCOLOGY CENTER INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2018-09-19",
        "last_updated": "2025-02-11",
        "certification_date": "2025-02-11",
        "status": "A",
        "authorized_official_last_name": "CONCEPCION",
        "authorized_official_first_name": "JANET",
        "authorized_official_title_or_position": "MEDICAL BILLING SUPERVISOR",
        "authorized_official_telephone_number": "671-647-4656",
        "authorized_official_name_prefix": "Mrs."
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GUAM MEDICAL BOARD LICENSE",
            "identifier": "M-1925",
            "state": "GU"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Cancer Center of Guam",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Cancer Center of Guam",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Kamille Wang
• Karla De Guzman Wang, PA-C
• Wayne Ward, DDS.
• Gregory Warner, RPH
• Westcare Pacific Islands
• Merry-Jane Wolborsky, R.PH.
• Robert Richard Wresch, M.D.
• Angie Yang, D.D.S.
• Hoseong Yang, MD PHD
• Robert Jae Yang, D.M.D.

• Hematology & Oncology Physician in Tamuning, GU
• Providers in Tamuning, GU by specialty
• Hematology & Oncology Physician in Guam

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.