Robert J. Ziemer, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA10004411 Issued in WA

Practice address

325 9TH Ave
Seattle, WA 98104-2420

Phone

(206) 520-5000

NPI assigned

Apr 19, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

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

Specialty

Physician Assistant

Education

Other, 2002

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Harborview Medical Center Hospital, Seattle, WA, CCN 500064
• Swedish Medical Center Hospital, Seattle, WA, CCN 500027

Merit-based Incentive Payment System (MIPS)

Final score

90.95 of 100Reported as group

Quality

84.94

Improvement activities

40

Cost

78.1

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

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.

• The Association of University Physicians

  • Anesthesiology Physician
  • Seattle, WA
  • NPI 1023041159
  Medicare reassignment Care Compare group
• Seattle Emergency Physicians Services Inc PS

  • Emergency Medicine Physician
  • Seattle, WA
  • NPI 1376642298
  Medicare reassignment

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

• Harborview Medical Center

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1053359729
  Care Compare affiliation
• Swedish Health Services

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1306992151
  Care Compare affiliation

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

{
    "created_epoch": "1145404800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756944000000",
    "number": "1083679245",
    "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",
            "telephone_number": "206-520-5700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "325 9TH AVE",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981042420",
            "telephone_number": "206-520-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZIEMER",
        "first_name": "ROBERT",
        "middle_name": "J.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-19",
        "last_updated": "2025-09-04",
        "certification_date": "2025-09-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "WA",
            "license": "PA10004411",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8331761",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Joseph K Ziegler, L.AC.
• Nathan Ziegman, PARAMEDIC
• Jonathon Ziel
• Jessica Zielinski, S.T.
• Christine Ann Zielke, RN
• Tabitha Zier, LMP
• Robert Eugene Zierler
• Derrek Danial Zietz, M.S., LMHCA, NCC
• David A Zieve, MD
• Sandie G Zieve, P.T.

• Physician Assistant in Seattle, WA
• Providers in Seattle, WA by specialty
• Physician Assistant in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.