Cain William Stark, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

MD61678578 Issued in WA

Practice address

600 Broadway Ste 270
Seattle, WA 98122-5392

Phone

(206) 625-0578

NPI assigned

Mar 28, 2021

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other names 1

• Cain William Johnson Former name

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

Anesthesiology

Education

Medical College of Wisconsin, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Physicians Anesthesia Service PLLCGroup PAC ID 6901792365, 183 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Swedish Medical Center Hospital, Seattle, WA, CCN 500027
• Swedish Medical Center / Cherry Hill Hospital, Seattle, WA, CCN 500025

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Physicians Anesthesia Service PLLC

  • Anesthesiology Physician
  • Seattle, WA
  • NPI 1417962200
  Medicare reassignment Care Compare group NPD
• Proliance Surgeons, Inc., P.S.

  • Ambulatory Surgical Clinic/Center
  • Seattle, WA
  • NPI 1811936990
  NPD
• Western Washington Medical Group, Inc, PS

  • Ambulatory Surgical Clinic/Center
  • Everett, WA
  • NPI 1013138536
  NPD

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

• Swedish Health Services

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1306992151
  Care Compare affiliation
• Swedish Health Services

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1356496582
  Care Compare affiliation

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

{
    "created_epoch": "1616889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751241600000",
    "number": "1245817857",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 840842",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752840842",
            "telephone_number": "206-625-0578",
            "fax_number": "206-625-9184"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 BROADWAY STE 270",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981225392",
            "telephone_number": "206-625-0578"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STARK",
        "first_name": "CAIN",
        "middle_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-03-28",
        "last_updated": "2025-06-30",
        "certification_date": "2025-06-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WA",
            "license": "61678578",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WA",
            "license": "MD61678578",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "CAIN",
            "last_name": "JOHNSON",
            "middle_name": "WILLIAM",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Cynthia A Stappenbeck, PHD
• Phoenix Star
• Matthew Starek, PHARM.D.
• Noah Starer, LICSW
• Vivan Dianne Stark-Turner, RN
• Katarina Josephine Stark, MD
• Lauren Stark, RD
• Mikayla Stark, LSWAIC
• Nathan Charles Stark, L.M.P
• Robert H Stark Jr., D.D.S.

• Anesthesiology Physician in Seattle, WA
• Providers in Seattle, WA by specialty
• Anesthesiology Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 30, 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.