NPIMap

Individual provider Active NPI

Claire Kassakian, MD

  • Nephrology Physician
  • Portland, OR
National Provider Identifier
1316172984
Registry record updated Sep 25, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
MD167522 Issued in OR
Practice address
4224 NE Halsey St Ste 300
Portland, OR 97213-1568
Phone
(503) 235-5509
Fax
(503) 235-5335
NPI assigned
May 26, 2009
Last updated
Sep 25, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 25, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X MD-25187 HI
Nephrology Physician 207RN0300X MD167522 OR Primary
Nephrology Physician 207RN0300X MD60683431 WA

Addresses

Primary practice location

4224 NE Halsey St Ste 300
Portland, OR 97213-1568

Mailing address

PO Box 3068
Portland, OR 97208-3068
Phone (503) 229-7976

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20140712000149 OR Practitioner - NephrologyPractitioner - Internal Medicine 8224253950 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
NephrologyAlso: Internal Medicine
Education
Warren Alpert Medical School of Brown University, 2009
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Northwest Renal Clinic IncGroup PAC ID 8628065836, 39 clinicians

Practice addresses (Care Compare)

4224 NE Halsey St
Suite 300
Portland, OR 97213-1568
Phone (503) 235-5509

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
MD-25187HIMDNephrology Physician
MD60683431WAMDNephrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Northwest Renal Clinic, Inc. Nephrology CurrentSince Jan 19, 2016 Accepting new patients
Northwest Renal Clinic, Inc. Nephrology Current Accepting new patients
Northwest Renal Clinic, Inc. Nephrology CurrentSince Jan 19, 2016 Accepting new patients
Northwest Renal Clinic, Inc. Nephrology Past Accepting new patients

Locations

1130 NW 22nd Ave
Ste 640
Portland, OR 97210
Phone (503) 229-7976

4224 NE Halsey St
Ste 300
Portland, OR 97213
Phone (503) 235-5509

5050 NE Hoyt St
Ste B54
Portland, OR 97213

925 Commercial St SE
Ste 110
Salem, OR 97302
Phone (503) 967-6670

Interoperability endpoints

  • Direct secure messaging: ckassakian154549@direct.ohsu.edu
  • Direct secure messaging: ckassakian37094@direct.acumenmd.com

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 11

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

NPI Registry JSON

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

{
    "created_epoch": "1243296000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758758400000",
    "number": "1316172984",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 3068",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972083068",
            "telephone_number": "503-229-7976",
            "fax_number": "503-274-4867"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4224 NE HALSEY ST STE 300",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972131568",
            "telephone_number": "503-235-5509",
            "fax_number": "503-235-5335"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KASSAKIAN",
        "first_name": "CLAIRE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-05-26",
        "last_updated": "2025-09-25",
        "certification_date": "2025-09-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "HI",
            "license": "MD-25187",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "OR",
            "license": "MD167522",
            "primary": true
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WA",
            "license": "MD60683431",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

Verify at the official NPI Registry.