David Cassius, MD PS

Primary specialty

Pain Medicine (Physical Medicine & Rehabilitation) PhysicianTaxonomy code 2081P2900X

License

37363 Issued in WA

Legal business name

DAVID CASSIUS, MD PS

Practice address

901 Boren Ave Ste 712
Seattle, WA 98104-3301

Phone

(206) 624-9876

Fax

(888) 325-7193

NPI assigned

Oct 17, 2007

Organization subpart

No

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

Authorized official

Name

Dr. David Cassius, MDNPI 1194884940

Title

President

Phone

(206) 255-8393

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in WA

Enrollment records 1

Tax ID family

David Cassius MD PS2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• David Cassius, MD PS

  • Pain Medicine (Physical Medicine & Rehabilitation) Physician
  • Santa Monica, CA
  • NPI 1881150415
  NPD tax ID

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• David Cassius, M.D.

  • Pain Medicine (Physical Medicine & Rehabilitation) Physician
  • Seattle, WA
  • NPI 1194884940
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1192579200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1774310400000",
    "number": "1255520102",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "901 BOREN AVE STE 712",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981043301",
            "telephone_number": "206-624-9876",
            "fax_number": "888-325-7193"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "901 BOREN AVE STE 712",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981043301",
            "telephone_number": "206-624-9876",
            "fax_number": "888-325-7193"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "DAVID CASSIUS, MD PS",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-10-17",
        "last_updated": "2026-03-24",
        "certification_date": "2026-03-24",
        "status": "A",
        "authorized_official_last_name": "CASSIUS",
        "authorized_official_first_name": "DAVID",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "206-255-8393",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "2081P2900X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Physical Medicine & Rehabilitation, Pain Medicine",
            "state": "WA",
            "license": "37363",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elyse Diana Davey
• Tyler Len Davick, PHARMD
• David Au-Yeung, DMD., PLLC
• David C Hall MD PS
• David Carl Obenchain DDS, PLLC
• David F. Flynn, MD, PC
• David J Haralson
• David J Haralson MD DMD PLLC
• David J Olson DDS PLLC
• David J Olson DDS PLLC

• Pain Medicine (Physical Medicine & Rehabilitation) Physician in Seattle, WA
• Providers in Seattle, WA by specialty
• Pain Medicine (Physical Medicine & Rehabilitation) Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.