Dena Witthaus, D.O.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

DO166704 Issued in OR

Practice address

19500 SE Stark St
Portland, OR 97233-5757

Phone

(800) 813-2000

NPI assigned

Jun 23, 2011

Sex

Female

Sole proprietor

Yes

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 OR, WA2 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

Internal Medicine

Education

Arizona College of Osteopathic Medicine Mid Western University, 2011

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)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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

  Internal Medicine, WA

  Medicare reassignment Care Compare group NPD
• Albany General Hospital

  • General Acute Care Hospital
  • Albany, OR
  • NPI 1154372340
  Medicare reassignment NPD
• Albany General Hospital

  • Family Medicine Physician
  • Albany, OR
  • NPI 1306679816
  NPD
• Albany General Hospital

  • Physical Medicine & Rehabilitation Physician
  • Albany, OR
  • NPI 1841556008
  NPD
• Kaiser Foundation Health Plan of the Northwest

  • General Practice Physician
  • Portland, OR
  • NPI 1871848457

  Internal Medicine

  NPD
• Kaiser Foundation Health Plan of the Northwest

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

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

{
    "created_epoch": "1308787200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756252800000",
    "number": "1528354966",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "500 NE MULTNOMAH ST STE 100",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972322031",
            "telephone_number": "800-813-2000",
            "fax_number": "855-524-5255"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19500 SE STARK ST",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972335757",
            "telephone_number": "800-813-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WITTHAUS",
        "first_name": "DENA",
        "credential": "D.O.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2011-06-23",
        "last_updated": "2025-08-27",
        "certification_date": "2025-08-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "PG154631",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "DO166704",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Richard Allen Witte, R.N.
• Melaura Wittemyer, MD
• James C Witten, MD
• Shay Forest Witten
• Lea Witter
• Anton Wittinger, LAC., LMT
• Beverly L Wittkopp, MD
• Elisabeth J Wittorff, LCSW
• Shilo Victoria Wittrock
• Casey French Wixson, PSYD

• Internal Medicine Physician in Portland, OR
• Providers in Portland, OR by specialty
• Internal Medicine Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 27, 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.