NPIMap

Individual provider Active NPI

Alexander David Malloy, D.O.

  • Trauma Surgery Physician
  • Seattle, WA
National Provider Identifier
1174886824
Registry record updated Oct 24, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Trauma Surgery PhysicianTaxonomy code 2086S0127X
License
OP61134169 Issued in WA
Practice address
325 9TH Ave
Seattle, WA 98104-2420
Phone
(206) 520-5000
NPI assigned
Jun 18, 2012
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 24, 2025

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Trauma Surgery Physician 2086S0127X OP61134169 WA Primary
Surgery Physician 208600000X DOS-1605 HI
Surgical Critical Care Physician 2086S0102X OC-0411 ID
General Practice Physician 208D00000X DOS-1605 HI

Addresses

Primary practice location

325 9TH Ave
Seattle, WA 98104-2420

Mailing address

PO Box 50095
Seattle, WA 98145-5095
Phone (206) 520-5700

Other practice location 1

1321 Colby Ave
Everett, WA 98201-1665
Phone (425) 261-2000

Other practice location 2

999 N Curtis Rd Ste 415
Boise, ID 83706-1334
Phone (208) 302-2600

Other identifiers 1

IdentifierTypeStateIssuer
1174886824MedicaidWA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA, ID, CO, MT4 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 4

Enrollment IDStateProvider typePAC IDDetails
I20210510001245 WA Practitioner - General Surgery 2668805680 Reassigns benefits to 2 organizations
I20240206001403 ID Practitioner - Critical Care (Intensivists) 2668805680 Reassigns benefits to 1 organization
I20250422003368 CO Practitioner - General Surgery 2668805680 Reassigns benefits to 1 organization
I20260407002628 MT Practitioner - General Surgery 2668805680 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Providence Health and Services- WashingtonGroup PAC ID 8325100480, 527 clinicians
The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians
Billings ClinicGroup PAC ID 6002993516, 814 clinicians

Practice addresses (Care Compare)

1321 Colby Ave
Everett, WA 98201-1665
Phone (425) 261-2000

325 9TH Ave
Seattle, WA 98104-2420
Phone (206) 731-3000

801 N 29TH St
Billings, MT 59101-0905
Phone (406) 238-2500

Hospital & facility affiliations

  • Harborview Medical Center Hospital, Seattle, WA, CCN 500064
  • Billings Clinic Hospital Hospital, Billings, MT, CCN 270004
  • Providence Regional Medical Center Everett Hospital, Everett, WA, CCN 500014

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hernia repair (minimally invasive)1-10
Upper gastrointestinal (GI) endoscopy for acid reflux1-10
Removal of tissue1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
DOS-1605HIMDSurgery Physician
OC-0411IDMDSurgical Critical Care Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Acute Care Surgery Medical Group, Inc. Surgery CurrentSince Apr 1, 2025 Accepting new patients
Providence Health & Services- Washington General Practice CurrentSince Mar 10, 2024 Accepting new patients
Saint Alphonsus Regional Medical Center Inc CurrentSince Feb 2, 2024 Accepting new patients
The Association of University Physicians Surgery CurrentSince May 3, 2021 Accepting new patients
Acute Care Surgery Medical Group, Inc. Surgery CurrentSince Apr 1, 2025 Accepting new patients
Providence Health & Services - Washington CurrentSince Mar 10, 2024 Accepting new patients
Saint Alphonsus Regional Medical Center Inc Trauma Surgery CurrentSince Feb 2, 2024 Accepting new patients
Saint Alphonsus Specialty Services Inc Surgery Past Accepting new patients
Harborview Medical Center Past Accepting new patients

Locations

999 N Curtis Rd
Ste 415
Boise, ID 83706
Phone (208) 302-2600

1055 N Curtis Rd
Boise, ID 83706
Phone (208) 367-2152

3025 W Cherry Ln
Ste B
Meridian, ID 83642
Phone (208) 302-6400

1321 Colby Ave
Everett, WA 98201
Phone (425) 259-4413

4112 Harbour Pointe Blvd SW
Ste 100
Mukilteo, WA 98275
Phone (425) 347-6330

1959 NE Pacific St
Seattle, WA 98195
Phone (206) 598-4333

325 9th Ave
Seattle, WA 98104
Phone (206) 731-3000

Interoperability endpoints

  • Direct secure messaging: amalloy1325206@direct.ehre.uwmedicine.org
  • Direct secure messaging: amalloy3184075@wm.providencedirect.org

Organizations & group practices 10

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.

Hospital & facility affiliations 11

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

NPI Registry JSON

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

{
    "created_epoch": "1339977600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761264000000",
    "number": "1174886824",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 50095",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981455095",
            "telephone_number": "206-520-5700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "325 9TH AVE",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981042420",
            "telephone_number": "206-520-5000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1321 Colby Ave",
            "address_purpose": "LOCATION",
            "city": "Everett",
            "state": "WA",
            "postal_code": "982011665",
            "country_code": "US",
            "telephone_number": "425-261-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "999 N Curtis Rd Ste 415",
            "address_purpose": "LOCATION",
            "city": "Boise",
            "state": "ID",
            "postal_code": "837061334",
            "country_code": "US",
            "telephone_number": "208-302-2600",
            "fax_number": "208-302-2625",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MALLOY",
        "first_name": "ALEXANDER",
        "middle_name": "DAVID",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-18",
        "last_updated": "2025-10-24",
        "certification_date": "2025-10-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0127X",
            "taxonomy_group": "",
            "desc": "Surgery, Trauma Surgery",
            "state": "WA",
            "license": "OP61134169",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "HI",
            "license": "DOS-1605",
            "primary": false
        },
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "ID",
            "license": "OC-0411",
            "primary": false
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "HI",
            "license": "DOS-1605",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1174886824",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.