Individual provider Active NPI

Tatiana Marie Bartlett

  • Physician Assistant
  • Seattle, WA
National Provider Identifier
1265318026
Registry record updated Nov 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
Practice address
4800 Sand Point Way NE
Seattle, WA 98105-3901
Phone
(206) 987-2000
NPI assigned
Aug 15, 2025
Last updated
Nov 19, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 19, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X Primary

Addresses

Primary practice location

4800 Sand Point Way NE
Seattle, WA 98105-3901

Mailing address

4800 Sand Point Way NE
Seattle, WA 98105-3901

Other names 1

  • Tatiana Marie Horton Former name

Medicare participation

Medicare enrollment files
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: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260120003325 WA Practitioner - Physician Assistant 3779060868 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2025
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

PO Box
5371 Rc504
Seattle, WA 98145-5005

PO Box
Suite 5371
Seattle, WA 98145

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Seattle Children's Hospital CurrentSince Jan 9, 2026 Accepting new patients
Seattle Childrens Hospital CurrentSince Jan 9, 2026 Accepting new patients

Locations

1035 116th Ave NE
Bellevue, WA 98004
Phone (425) 451-4141

8232 W Grandridge Blvd
Kennewick, WA 99336
Phone (509) 582-1700

4800 Sand Point Way NE
Seattle, WA 98105
Phone (206) 526-2000

1780 NW Myhre Rd
Ste 2120
Silverdale, WA 98383
Phone (360) 782-3100

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1755216000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763510400000",
    "number": "1265318026",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4800 SAND POINT WAY NE",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981053901"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4800 SAND POINT WAY NE",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981053901",
            "telephone_number": "206-987-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BARTLETT",
        "first_name": "TATIANA",
        "middle_name": "MARIE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-08-15",
        "last_updated": "2025-11-19",
        "certification_date": "2025-11-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "TATIANA",
            "last_name": "HORTON",
            "middle_name": "MARIE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.