NPIMap

Individual provider Active NPI

Megan Olivia Gilson, ARNP

  • Nurse Practitioner
  • Seattle, WA
National Provider Identifier
1811535750
Registry record updated Jul 14, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
AP61048347 Issued in WA
Practice address
825 Eastlake Ave E
Seattle, WA 98109-4405
Phone
(206) 520-5000
NPI assigned
Dec 11, 2019
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 14, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Critical Care Medicine Nurse Practitioner 363LC0200X AP61048347 WA
Nurse Practitioner 363L00000X AP61048347 WA Primary

Addresses

Primary practice location

825 Eastlake Ave E
Seattle, WA 98109-4405

Mailing address

PO Box 50095
Seattle, WA 98145-5095

Other practice location 1

1959 NE Pacific St
Seattle, WA 98195-0001
Phone (206) 520-5000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA, SC2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20200609001262 WA Practitioner - Nurse Practitioner 9537580089 Reassigns benefits to 1 organization
I20230207003087 SC Practitioner - Nurse Practitioner 9537580089 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians

Practice addresses (Care Compare)

825 Eastlake Ave E
Seattle, WA 98109-4405
Phone (206) 288-1000

Hospital & facility affiliations

  • Fred Hutchinson Cancer Center Hospital, Seattle, WA, CCN 500138
  • Overlake Hospital Medical Center & Clinics Hospital, Bellevue, WA, CCN 500051
  • Musc Medical Center Hospital, Charleston, SC, CCN 420004

Merit-based Incentive Payment System (MIPS)

Final score
79.02 of 100Reported as group
Quality
62.41
Promoting interoperability
99
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
AP61048347WAMDNurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
University Medical Associates of the Medical University of South Carol Current Accepting new patients
University Medical Associates of the Medical University of South Carol Nurse Practitioner CurrentSince Jan 3, 2023 Accepting new patients

Locations

171 Ashley Ave
Charleston, SC 29425
Phone (843) 792-2123

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 and National Provider Directory roles.

Hospital & facility affiliations 10

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

NPI Registry JSON

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

{
    "created_epoch": "1576022400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752451200000",
    "number": "1811535750",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 50095",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981455095"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "825 EASTLAKE AVE E",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981094405",
            "telephone_number": "206-520-5000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1959 NE PACIFIC ST",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981950001",
            "country_code": "US",
            "telephone_number": "206-520-5000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GILSON",
        "first_name": "MEGAN",
        "middle_name": "OLIVIA",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-12-11",
        "last_updated": "2025-07-14",
        "certification_date": "2025-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LC0200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Critical Care Medicine",
            "state": "WA",
            "license": "AP61048347",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "WA",
            "license": "AP61048347",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.