Thomas Lancaster Merlin, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

MD224072 Issued in OR

Practice address

10180 SE Sunnyside Rd
Clackamas, OR 97015-8970

Phone

(503) 803-2000

NPI assigned

Apr 5, 2022

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in TX, OR2 enrollments

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 2

Specialty

Emergency Medicine

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Kaiser Foundation Health Plan of the NorthwestGroup PAC ID 5799688230, 1,805 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Kaiser Sunnyside Medical Center Hospital, Clackamas, OR, CCN 380091
• Kaiser Foundation Hospital Westside Hospital, Hillsboro, OR, CCN 380103

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Kaiser Foundation Health Plan of the Northwest

  • General Practice Physician
  • Portland, OR
  • NPI 1184786527

  Emergency Medicine

  Medicare reassignment Care Compare group NPD
• Integrative Emergency Services Physician Group PA

  • Emergency Medicine Physician
  • Fort Worth, TX
  • NPI 1285922542
  Medicare reassignment NPD
• Kaiser Foundation Health Plan of the Northwest

  • Clinic/Center
  • Hillsboro, OR
  • NPI 1942718622
  NPD

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

• Kaiser Foundation Hospitals

  • General Acute Care Hospital
  • Clackamas, OR
  • NPI 1124182902
  Care Compare affiliation
• Kaiser Foundation Hospitals

  • General Acute Care Hospital
  • Hillsboro, OR
  • NPI 1891048807
  Care Compare affiliation

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

{
    "created_epoch": "1649116800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751587200000",
    "number": "1215678040",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10180 SE SUNNYSIDE RD",
            "city": "CLACKAMAS",
            "state": "OR",
            "postal_code": "970158970",
            "telephone_number": "503-803-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10180 SE SUNNYSIDE RD",
            "city": "CLACKAMAS",
            "state": "OR",
            "postal_code": "970158970",
            "telephone_number": "503-803-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERLIN",
        "first_name": "THOMAS",
        "middle_name": "LANCASTER",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-04-05",
        "last_updated": "2025-07-04",
        "certification_date": "2025-07-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "U7472",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "OR",
            "license": "MD224072",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Melendez, MD
• Melissa R Kinder MD, LLC
• Joshua Michael Mellander
• Andrea Leah Mendoza, LMT
• Roderick Scott Mercurio, M.D.
• Mary Elizabeth Merrill, RT
• Stephanie Merrill
• Seth Ernest Meyer, MD
• Wendy Susan Meyers, MD
• Michael a Brown, DMD, PC

• Emergency Medicine Physician in Clackamas, OR
• Providers in Clackamas, OR by specialty
• Emergency Medicine Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 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.