Mason C Paas, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MD225581 Issued in OR

Practice address

4805 NE Glisan St Ste BG12
Portland, OR 97213-2933

Phone

(503) 215-2392

NPI assigned

Jul 5, 2021

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

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

Internal Medicine

Education

University of Kentucky College of Medicine, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

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

Practice addresses (Care Compare)

Hospital & facility affiliations

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

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

  • Clinic/Center
  • Newberg, OR
  • NPI 1356411342

  Internal Medicine

  NPD
• Providence Health & Services Oregon

  • Psychiatry Physician
  • Portland, OR
  • NPI 1760177737
  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 1114015971
  Care Compare affiliation

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

{
    "created_epoch": "1625443200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764633600000",
    "number": "1386215986",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4805 NE GLISAN ST STE BG12",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972132933"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4805 NE GLISAN ST STE BG12",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972132933",
            "telephone_number": "503-215-2392"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PAAS",
        "first_name": "MASON",
        "middle_name": "C",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-07-05",
        "last_updated": "2025-12-02",
        "certification_date": "2025-12-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "MD225581",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Melissa Ozmore, RN, BSN
• Delaney Ozmun, LCSW
• Kendall Lynne Ozmun
• Arzu Ozturk, M.D.
• Sisii Ozuna
• Philip Paasch, RPH
• Pac Dental
• Pace Pediatric Therapy, Inc.
• Alyssa Rachael Pace, PA-C
• Lisa Pace, MA

• 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 Dec 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.