Ryan B Israelsen, M.D.

Primary specialty

Allergy & Immunology PhysicianTaxonomy code 207K00000X

License

MD187596 Issued in OR

Practice address

3121 Signature CT
Medford, OR 97504-7738

Phone

(541) 858-1003

Fax

(541) 255-2997

NPI assigned

Apr 11, 2012

Last updated

Apr 27, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

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

Allergy/ImmunologyAlso: Internal Medicine, Pediatric Medicine

Education

University of Utah School of Medicine, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Allergy and Asthma Center of Southern Oregon, PCGroup PAC ID 1355449141, 7 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Asante Rogue Regional Medical Center Hospital, Medford, OR, CCN 380018
• Asante Three Rivers Medical Center Hospital, Grants Pass, OR, CCN 380002
• Providence Medford Medical Center Hospital, Medford, OR, CCN 380075
• Asante Ashland Community Hospital Hospital, Ashland, OR, CCN 380005

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Allergy & Asthma Center of Southern Oregon PC

  • Allergy Physician
  • Medford, OR
  • NPI 1760548408
  Medicare reassignment Care Compare group NPD
• Allergy & Asthma Center of Southern Oregon PC

  • Allergy Physician
  • Roseburg, OR
  • NPI 1851954853

  Allergy & Immunology

  NPD
• Allergy & Asthma Center of Southern Oregon PC

  • Allergy Physician
  • Klamath Falls, OR
  • NPI 1164562401
  NPD (past)

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

• Asante

  dba Asante Rogue Regional Medical Center

  • General Acute Care Hospital
  • Medford, OR
  • NPI 1770587107
  Care Compare affiliation
• Asante Ashland Community Hospital, LLC

  • General Acute Care Hospital
  • Ashland, OR
  • NPI 1730628827
  Care Compare affiliation
• Asante Three Rivers Medical Center, LLC

  • General Acute Care Hospital
  • Grants Pass, OR
  • NPI 1801891809
  Care Compare affiliation
• Providence Health & Services - Oregon

  dba Providence Medford Medical Center

  • General Acute Care Hospital
  • Medford, OR
  • NPI 1689755670
  Care Compare affiliation

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

{
    "created_epoch": "1334102400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777248000000",
    "number": "1487910766",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3121 SIGNATURE CT",
            "city": "MEDFORD",
            "state": "OR",
            "postal_code": "975047738",
            "telephone_number": "541-858-1018"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3121 SIGNATURE CT",
            "city": "MEDFORD",
            "state": "OR",
            "postal_code": "975047738",
            "telephone_number": "541-858-1003",
            "fax_number": "541-255-2997"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ISRAELSEN",
        "first_name": "RYAN",
        "middle_name": "B",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-04-11",
        "last_updated": "2026-04-27",
        "certification_date": "2026-04-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207K00000X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology",
            "state": "OR",
            "license": "MD187596",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "MD187596",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "OR",
            "license": "MD187596",
            "primary": false
        },
        {
            "code": "2080P0201X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Allergy/Immunology",
            "state": "OR",
            "license": "MD187596",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Allergy & Immunology Physician in Medford, OR
• Providers in Medford, OR by specialty
• Allergy & Immunology Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 27, 2026; 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.