Individual provider Active NPI

Jeff Sienkiewicz, PA-C

  • Physician Assistant
  • Puyallup, WA
National Provider Identifier
1487326765
Registry record updated Aug 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
PA61410321 Issued in WA
Practice address
4505 S Meridian # 101
Puyallup, WA 98373-5002
Phone
(253) 697-5770
Fax
(253) 864-4014
NPI assigned
Oct 4, 2021
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 19, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X PA61410321 WA Primary
Physician Assistant 363A00000X PA8994 MA

Addresses

Primary practice location

4505 S Meridian # 101
Puyallup, WA 98373-5002

Mailing address

PO Box 5299
Ms: 820-5-Pco
Tacoma, WA 98415-0299

Other practice location 1

65 Clarendon St Apt 6
Boston, MA 02116-6040
Phone (203) 727-7638

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
I20240828004398 WA Practitioner - Physician Assistant 8123496197 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Multicare Health SystemGroup PAC ID 7719899897, 2,312 clinicians

Practice addresses (Care Compare)

311 S L St
Tacoma, WA 98405-3720

4700 Point Fosdick Dr
Gig Harbor, WA 98335-1706

9420 N Newport Hwy
Suite 103
Spokane, WA 99218-1391
Phone (253) 403-1000

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
PA61410321WAMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Multicare Health System CurrentSince Aug 9, 2024 Accepting new patients
Multicare Health System CurrentSince Aug 9, 2024 Accepting new patients

Locations

4700 Point Fosdick Dr
Ste 104
Gig Harbor, WA 98335
Phone (253) 459-7590

222 State Ave N
Kent, WA 98030
Phone (253) 372-7680

311 S L St
Tacoma, WA 98405
Phone (253) 403-1444

Interoperability endpoints

  • Direct secure messaging: jsienkiewicz790858@direct.multicare.org

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 1

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": "1633305600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755561600000",
    "number": "1487326765",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 5299",
            "address_2": "MS: 820-5-PCO",
            "city": "TACOMA",
            "state": "WA",
            "postal_code": "984150299"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4505 S MERIDIAN # 101",
            "city": "PUYALLUP",
            "state": "WA",
            "postal_code": "983735002",
            "telephone_number": "253-697-5770",
            "fax_number": "253-864-4014"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "65 Clarendon St Apt 6",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021166040",
            "country_code": "US",
            "telephone_number": "203-727-7638",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIENKIEWICZ",
        "first_name": "JEFF",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-10-04",
        "last_updated": "2025-08-19",
        "certification_date": "2025-08-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "WA",
            "license": "PA61410321",
            "primary": true
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MA",
            "license": "PA8994",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Puyallup, WA

Sources for this page

Verify at the official NPI Registry.