Elaine Ji-Yun Deemer, DO

Primary specialty

Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X

License

1649856162 Issued in CA

Practice address

3400 Lomita Blvd Ste 500
Torrance, CA 90505-4931

Phone

(310) 325-9110

NPI assigned

Mar 23, 2021

Sex

Female

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 CA

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 MedicineAlso: Geriatric Medicine

Education

Liberty Univ College of Osteopathic Medicine, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Torrance Health Association IncGroup PAC ID 1355302134, 298 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Torrance Memorial Home Health Home health agency, Torrance, CA, CCN 057788
• Torrance Memorial Medical Center Hospital, Torrance, CA, CCN 050351
• Lac/Harbor-UCLA Med Center Hospital, Torrance, CA, CCN 050376

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

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.

• Torrance Health Association Inc

  • Family Medicine Physician
  • Torrance, CA
  • NPI 1083903124
  Medicare reassignment Care Compare group NPD

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

• County of Los Angeles

  • General Acute Care Hospital
  • Torrance, CA
  • NPI 1477574838
  Care Compare affiliation
• Torrance Memorial Medical Center

  • General Acute Care Hospital
  • Torrance, CA
  • NPI 1467459776
  Care Compare affiliation
• Torrance Memorial Medical Center

  • Home Health Agency
  • Torrance, CA
  • NPI 1710989330
  Care Compare affiliation

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

{
    "created_epoch": "1616457600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757203200000",
    "number": "1649856162",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3400 LOMITA BLVD STE 500",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905054931",
            "telephone_number": "310-325-9110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3400 LOMITA BLVD STE 500",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905054931",
            "telephone_number": "310-325-9110"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DEEMER",
        "first_name": "ELAINE",
        "middle_name": "JI-YUN",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-23",
        "last_updated": "2025-09-07",
        "certification_date": "2025-09-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "CA",
            "license": "1649856162",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Danielle Jade Decastro-Knutson
• Madison Louise Decker
• Stacy Deckhart, NP
• Dedicated Health Care Management
• Savana Deeb
• Deepjot K Singh MD Inc
• Deepti H. Chandran, M.D. Inc
• Christina Margaret Hagins Defrance, B.A.
• Allison Marie Degraaf, MS, BCBA
• Thomas Deiss, DO

• Geriatric Medicine (Internal Medicine) Physician in Torrance, CA
• Providers in Torrance, CA by specialty
• Geriatric Medicine (Internal Medicine) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 7, 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.