John Hemmen, MD

Primary specialty

Emergency Medical Services (Emergency Medicine) PhysicianTaxonomy code 207PE0004X

License

MD00015059 Issued in WA

Practice address

5300 Tallman Ave NW
Seattle, WA 98107-3932

Phone

(206) 782-2700

NPI assigned

May 4, 2006

Last updated

Jul 13, 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 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Ballard Emergency Physicians, P.S.

  • Emergency Medicine Physician
  • Seattle, WA
  • NPI 1619909256
  NPD (past)

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

{
    "created_epoch": "1146700800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1659329605",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3609 POINT WHITE DR NE",
            "city": "BAINBRIDGE ISLAND",
            "state": "WA",
            "postal_code": "981104055"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5300 TALLMAN AVE NW",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981073932",
            "telephone_number": "206-782-2700"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HEMMEN",
        "first_name": "JOHN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-04",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207PE0004X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Emergency Medical Services",
            "state": "WA",
            "license": "MD00015059",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1229301",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sheena Hembrador, M.D.
• Cecelia Jean Hembrough, MD
• Jake Frederick Hemingway, MD
• Alissa Hemke, M.D.
• Lily Hemler
• Chelsea Jo Hemmenway, CN
• Hayley T Hemphill, PSYD
• Kelly Anne Hemphill, LMHCA
• Lisa Hemphill, LMP
• Tony Karriem Hemphill, D.C.

• Emergency Medical Services (Emergency Medicine) Physician in Seattle, WA
• Providers in Seattle, WA by specialty
• Emergency Medical Services (Emergency Medicine) Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.