Regan Melissa Duffy, MD

Primary specialty

Medical Oncology PhysicianTaxonomy code 207RX0202X

License

MD28919 Issued in OR

Practice address

9135 SW Barnes Rd
Suite 261
Portland, OR 97225-6784

Phone

(503) 216-6300

NPI assigned

May 3, 2007

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in OR

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

Specialty

Hematology/OncologyAlso: Internal Medicine

Education

Oregon Health Sciences University School of Medicine, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Providence Health and Services OregonGroup PAC ID 0648183608, 1,423 clinicians

Providence Health and Services - OregonGroup PAC ID 5395656284, 195 clinicians

Providence Health and Services - OregonGroup PAC ID 9335057447, 212 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence Portland Medical Center Hospital, Portland, OR, CCN 380061
• Providence St Vincent Medical Center Hospital, Portland, OR, CCN 380004
• Providence Seaside Hospital Hospital, Seaside, OR, CCN 381303

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.

• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1003991845

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1114015971

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • General Practice Physician
  • Lake Oswego, OR
  • NPI 1023488343
  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • Clinical Pathology Physician
  • Hood River, OR
  • NPI 1053862714

  Internal Medicine

  Medicare reassignment NPD
• Providence Health & Services Oregon

  • Critical Access Hospital
  • Hood River, OR
  • NPI 1255429338
  Medicare reassignment NPD
• Providence Health & Services Oregon

  • Critical Access Hospital
  • Seaside, OR
  • NPI 1578500492
  Medicare reassignment NPD
• Providence Health & Services - Oregon

  • Neurology with Special Qualifications in Child Neurology Physician
  • Portland, OR
  • NPI 1316125149
  NPD
• Providence Health & Services - Oregon

  • Clinical Pathology Physician
  • Portland, OR
  • NPI 1740732650

  Internal Medicine

  NPD
• Providence Health & Services - Oregon

  • Clinical Pathology Physician
  • Portland, OR
  • NPI 1831641745

  Internal Medicine

  NPD
• Providence Health & Services Oregon

  • Rural Health Clinic/Center
  • Hood River, OR
  • NPI 1073100095
  NPD
• Providence Health & Services Oregon

  • Clinical Pathology Physician
  • Seaside, OR
  • NPI 1093266769

  Internal Medicine

  NPD
• Providence Health & Services Oregon

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Portland, OR
  • NPI 1396818993
  NPD

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

• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1003991845
  Care Compare affiliation
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1114015971
  Care Compare affiliation
• Providence Health & Services - Oregon

  • Case Manager/Care Coordinator
  • Portland, OR
  • NPI 1891822995

  Hospital

  Care Compare affiliation
• Providence Health & Services Oregon

  • Critical Access Hospital
  • Seaside, OR
  • NPI 1578500492
  Care Compare affiliation

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

{
    "created_epoch": "1178150400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746144000000",
    "number": "1487876827",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 3158",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972083158"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9135 SW BARNES RD",
            "address_2": "SUITE 261",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972256784",
            "telephone_number": "503-216-6300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DUFFY",
        "first_name": "REGAN",
        "middle_name": "MELISSA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-05-03",
        "last_updated": "2025-05-02",
        "certification_date": "2025-05-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "MD28919",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "OR",
            "license": "MD28919",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "OR",
            "license": "MD28919",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "5500654736",
            "state": "OR"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Clark Duffy
• Conor Edward Duffy, CADC-I
• Elizabeth Duffy, PT
• Julia Duffy, RDH
• Martha E. Duffy, RD
• Emily Dawn Duforest, LMT
• Austin Joseph Dufort
• Brandon Michael Duft, M.D.
• Gina Marie Dugan, COTA
• Jean Elaine Dugan, L.AC., BBA

• Medical Oncology Physician in Portland, OR
• Providers in Portland, OR by specialty
• Medical Oncology Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 2, 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.