William Cooper Procter Maloney, DO

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

DO.OP.61679799 Issued in WA

Practice address

9040A Jackson Ave
Joint Base Lewis McChord, WA 98431-3983

Phone

(253) 968-1110

NPI assigned

Apr 4, 2020

Sex

Male

Sole proprietor

Yes

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 WA

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

Emergency Medicine

Education

Other, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Hospital & facility affiliations

• Capital Medical Center Hospital, Olympia, WA, CCN 500139

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wmaloney1100437@direct.sw.org

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

• Olympia Emergency Care Physicians PLLC

  • Emergency Medicine Physician
  • Olympia, WA
  • NPI 1396498671

  Single Specialty

  Medicare reassignment NPD

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

• Multicare Health System

  • General Acute Care Hospital
  • Olympia, WA
  • NPI 1841258639
  Care Compare affiliation

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

{
    "created_epoch": "1585958400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753228800000",
    "number": "1861021594",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9040A JACKSON AVE",
            "city": "JOINT BASE LEWIS MCCHORD",
            "state": "WA",
            "postal_code": "984310001",
            "telephone_number": "253-968-1110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9040A JACKSON AVE",
            "city": "JOINT BASE LEWIS MCCHORD",
            "state": "WA",
            "postal_code": "984313983",
            "telephone_number": "253-968-1110"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MALONEY",
        "first_name": "WILLIAM",
        "middle_name": "COOPER PROCTER",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2020-04-04",
        "last_updated": "2025-07-23",
        "certification_date": "2025-07-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Emergency Medicine",
            "state": "WA",
            "license": "DO.OP.61679799",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Madigan Army Medical Center
• Madigan Army Medical Ctr
• Madigan Army Medical Ctr
• Victoria Magoonbarker, HL
• Pooja Mahadevaswamy
• Clayton Todd Manning, PHD
• Philippe Mansour, DMD
• Rowena V Marcelo, RN
• Kathleen Marinelli, DMD
• Mitchell T Marks, PA-C

• Emergency Medicine Physician in Joint Base Lewis McChord, WA
• Providers in Joint Base Lewis McChord, WA by specialty
• Emergency Medicine Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 23, 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.