Mark Thomas Sebald, CRNA

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

AP61450763 Issued in WA

Practice address

1 Boone Rd
Bremerton, WA 98312-1894

Phone

(713) 614-3078

NPI assigned

Jul 3, 2019

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

Medicare fee-for-service enrollment

Enrolled in WA

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

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.

• Washington Gastroenterology PLLC

  • Gastroenterology Physician
  • Tacoma, WA
  • NPI 1306364401

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Washington Gastroenterology PLLC

  • Clinical Medical Laboratory
  • Federal Way, WA
  • NPI 1467011122
  NPD
• Digestive Disease & Endoscopy Center, LLC

  • Ambulatory Surgical Clinic/Center
  • Silverdale, WA
  • NPI 1306973235
  NPD (past)

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

{
    "created_epoch": "1562112000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752796800000",
    "number": "1245892827",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13359 ROCKY RIDGE RD NW",
            "city": "SILVERDALE",
            "state": "WA",
            "postal_code": "983839511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 BOONE RD",
            "city": "BREMERTON",
            "state": "WA",
            "postal_code": "983121894",
            "telephone_number": "713-614-3078"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SEBALD",
        "first_name": "MARK",
        "middle_name": "THOMAS",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-07-03",
        "last_updated": "2025-07-18",
        "certification_date": "2025-07-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "TX",
            "license": "INTERIM",
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "WA",
            "license": "AP61450763",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Teri Lynae Scott, ARNP, CWCN
• Jayne J. Scribner, A.R.N.P.
• Cara Francine Seacrist, RN
• William Clayborn Seal, MD
• Rachael L Searle
• Sarah E Sebastian, PTA
• Ashea Sedwick
• Janet Marie Seeley, MASSAGE PRACTITIONER
• Arriyanna Segesman
• Chloe Segesman

• Certified Registered Nurse Anesthetist in Bremerton, WA
• Providers in Bremerton, WA by specialty
• Certified Registered Nurse Anesthetist in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 18, 2025; 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.