Individual provider Active NPI

Jason William Harper, MD

  • Gastroenterology Physician
  • Seattle, WA
National Provider Identifier
1336305911
Registry record updated Jan 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
MD60238161 Issued in WA
Practice address
1221 Madison St Ste 1220
Seattle, WA 98104-1356
Phone
(206) 215-4250
Fax
(206) 215-4252
NPI assigned
Aug 2, 2008
Last updated
Jan 12, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 12, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X MD60238161 WA
Gastroenterology Physician 207RG0100X MD60238161 WA Primary

Addresses

Primary practice location

1221 Madison St Ste 1220
Seattle, WA 98104-1356

Mailing address

PO Box 25608
Salt Lake City, UT 84125-0608
Phone (206) 320-4476

Other practice location 1

751 NE Blakely Dr Ste 3020
Issaquah, WA 98029-6201
Phone (425) 313-5345

Other identifiers 1

IdentifierTypeStateIssuer
2018493MedicaidWA

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: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20140708000812 WA Practitioner - Gastroenterology 8426273426 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Columbia University College of Physicians and Surgeons, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Pacmed ClinicsGroup PAC ID 2466350657, shared by 2 NPIs, 211 clinicians
Swedish Health ServicesGroup PAC ID 0244138196, 1,038 clinicians
The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians

Practice addresses (Care Compare)

1101 Madison St
Suite 301
Seattle, WA 98104-3599
Phone (206) 505-1300

1221 Madison St
Suite 1220
Seattle, WA 98104-1356
Phone (206) 215-4250

325 9TH Ave
Seattle, WA 98104-2420
Phone (206) 731-3000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
93.85 of 100Reported as apm
Quality
74.6
Promoting interoperability
100
Improvement activities
40

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy42
Upper gastrointestinal (GI) endoscopy for acid reflux34

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
MD60238161WAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Pacmed Clinics Internal Medicine CurrentSince Jan 10, 2026 Accepting new patients
The Association of University Physicians Internal Medicine CurrentSince Jun 20, 2017 Accepting new patients
Pacmed Clinics CurrentSince Jan 10, 2026 Accepting new patients
Pacmed Clinics CurrentSince Jan 10, 2026 Accepting new patients
Swedish Health Services Past Accepting new patients

Locations

751 NE Blakely Dr
Ste 3020
Issaquah, WA 98029
Phone (425) 313-5345

220 15th Ave SE
Puyallup, WA 98372
Phone (253) 435-3400

1101 Madison St
Ste 301
Seattle, WA 98104
Phone (206) 505-1101

1101 Madison St
Ste 400
Seattle, WA 98104
Phone (206) 505-1230

1959 NE Pacific St
Seattle, WA 98195
Phone (206) 598-4333

325 9th Ave
Seattle, WA 98104
Phone (206) 731-3000

Interoperability endpoints

  • Direct secure messaging: jharper82812@direct.ehre.uwmedicine.org

Organizations & group practices 6

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.

Hospital & facility affiliations 4

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": "1217635200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768176000000",
    "number": "1336305911",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 25608",
            "city": "SALT LAKE CITY",
            "state": "UT",
            "postal_code": "841250608",
            "telephone_number": "206-320-4476"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 MADISON ST STE 1220",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981041356",
            "telephone_number": "206-215-4250",
            "fax_number": "206-215-4252"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "751 NE Blakely Dr Ste 3020",
            "address_purpose": "LOCATION",
            "city": "Issaquah",
            "state": "WA",
            "postal_code": "980296201",
            "country_code": "US",
            "telephone_number": "425-313-5345",
            "fax_number": "425-313-4704",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HARPER",
        "first_name": "JASON",
        "middle_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-08-02",
        "last_updated": "2026-01-12",
        "certification_date": "2026-01-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "MD60238161",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "WA",
            "license": "MD60238161",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2018493",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.