Individual provider Active NPI

Nicholas Christopher Markadakis, MD

  • Emergency Medicine Physician
  • Auburn, WA
National Provider Identifier
1639673544
Registry record updated May 26, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
MD61224889 Issued in WA
Practice address
202 N Division St
Auburn, WA 98001-4939
Phone
(253) 833-7711
NPI assigned
Mar 23, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 26, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X MD61224889 WA Primary
Emergency Medicine Physician 207P00000X D92039 MD
Emergency Medicine Physician 207P00000X 29558 NV

Addresses

Primary practice location

202 N Division St
Auburn, WA 98001-4939

Mailing address

300 Lenora St
Seattle, WA 98121-2411

Other practice location 1

1800 W Charleston Blvd
Las Vegas, NV 89102-2386
Phone (702) 383-2000

Other practice location 2

939 Caroline St
Port Angeles, WA 98362-3997
Phone (360) 417-7000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA, NV2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20220816001535 WA Practitioner - Emergency Medicine 3274881255 Reassigns benefits to 2 organizations
I20260622003284 NV Practitioner - Emergency Medicine 3274881255

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
University of Washington School of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Cascade Emergency Physicians IncGroup PAC ID 8527955871, 19 clinicians

Practice addresses (Care Compare)

202 N Division St
Auburn, WA 98001-4939
Phone (253) 833-7711

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
29558NVMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cascade Emergency Physicians Inc. Emergency Medicine CurrentSince Oct 1, 2023 Accepting new patients
Sound Physicians Emergency Medicine of Washington PLLC Emergency Medicine CurrentSince Jul 9, 2023 Accepting new patients

Locations

202 N Division St
Auburn, WA 98001
Phone (253) 333-2562

939 Caroline St
Port Angeles, WA 98362
Phone (360) 417-7315

2000 Hospital Dr
Sedro Woolley, WA 98284
Phone (360) 856-6021

Interoperability endpoints

  • Direct secure messaging: nmarkadakis451110@direct.hopkinsmedicine.org

Organizations & group practices 2

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 2

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": "1521763200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779753600000",
    "number": "1639673544",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 LENORA ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981212411"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "202 N DIVISION ST",
            "city": "AUBURN",
            "state": "WA",
            "postal_code": "980014939",
            "telephone_number": "253-833-7711"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1800 W Charleston Blvd",
            "address_purpose": "LOCATION",
            "city": "Las Vegas",
            "state": "NV",
            "postal_code": "891022386",
            "country_code": "US",
            "telephone_number": "702-383-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "939 Caroline St",
            "address_purpose": "LOCATION",
            "city": "Port Angeles",
            "state": "WA",
            "postal_code": "983623997",
            "country_code": "US",
            "telephone_number": "360-417-7000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MARKADAKIS",
        "first_name": "NICHOLAS",
        "middle_name": "CHRISTOPHER",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-03-23",
        "last_updated": "2026-05-26",
        "certification_date": "2026-05-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WA",
            "license": "MD61224889",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MD",
            "license": "D92039",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NV",
            "license": "29558",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Auburn, WA

Sources for this page

Verify at the official NPI Registry.