Patrick Hennessey Erstad, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MD.MD.70070534 Issued in WA

Practice address

925 Seneca St
Seattle, WA 98101-2742

Phone

(206) 583-6078

NPI assigned

Mar 23, 2023

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

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

Internal Medicine

Education

University of Washington School of Medicine, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Virginia Mason Medical CenterGroup PAC ID 9830002617, shared by 16 NPIs, 867 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Virginia Mason Medical Center Hospital, Seattle, WA, CCN 500005

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Interoperability endpoints

• Direct secure messaging: perstad638958@direct.ochin.org

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

• Virginia Mason Medical Center

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1801851258
  Care Compare affiliation

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

{
    "created_epoch": "1679529600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787788800000",
    "number": "1255034732",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "925 SENECA ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981012742",
            "telephone_number": "206-583-6078"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "925 SENECA ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981012742",
            "telephone_number": "206-583-6078"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ERSTAD",
        "first_name": "PATRICK",
        "middle_name": "HENNESSEY",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-03-23",
        "last_updated": "2026-08-27",
        "certification_date": "2026-08-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "MD.MD.70070534",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lesley Ernst, LMP
• Kathleen M. Errico, ARNP
• Ksenia Igorevna Ershova, MD
• Erskin Psychiatric Services PLLC
• Petra Tamika Erskin, DNP, PMHNP-BC
• Sarah Ertsgaard, OT
• Lale Aslihan Ertuglu, MD
• Abbey Ervin
• Cynthia Herman Ervin, PH.D.
• Phillip Ervin

• Internal Medicine Physician in Seattle, WA
• Providers in Seattle, WA by specialty
• Internal Medicine Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 27, 2026; 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.