Aaron Matthew Yim, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

A192568 Issued in CA

Practice address

24451 Health Center Dr
Laguna Hills, CA 92653-3689

Phone

(949) 837-4500

NPI assigned

Apr 13, 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 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

Anesthesiology

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Usc Care Medical Group IncGroup PAC ID 0446157747, 1,378 clinicians

Cep America - Anesthesia PCGroup PAC ID 3678897915, 849 clinicians

California Anesthesia Associates Medical Group IncGroup PAC ID 8426047721, 62 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Keck Hospital of Usc Hospital, Los Angeles, CA, CCN 050696
• Memorialcare Saddleback Medical Center Hospital, Laguna Hills, CA, CCN 050603
• Usc Arcadia Hospital Hospital, Arcadia, CA, CCN 050238

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ayim898811@direct.memorialcare.org

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.

• California Anesthesia Associates Medical Group, Inc.

  • Anesthesiology Physician
  • Long Beach, CA
  • NPI 1457399933
  Medicare reassignment Care Compare group NPD
• Cep America - Anesthesia, PC

  • Anesthesiology Physician
  • Walnut Creek, CA
  • NPI 1790401438
  Medicare reassignment Care Compare group NPD
• Usc Care Medical Group, Inc

  • General Practice Physician
  • Los Angeles, CA
  • NPI 1902846306

  Anesthesiology

  Medicare reassignment Care Compare group NPD
• Corona Anesthesia Group, Inc.

  • Anesthesiology Physician
  • Corona, CA
  • NPI 1558865840
  Medicare reassignment
• Riverside Anesthesia Partners Inc

  • Anesthesiology Physician
  • Riverside, CA
  • NPI 1700694262
  Medicare reassignment
• Cep America - Anesthesia PC

  • Anesthesiology Physician
  • Santa Clarita, CA
  • NPI 1205693058
  NPD
• Usc Care Medical Group, Inc

  • Durable Medical Equipment & Medical Supplies
  • Pasadena, CA
  • NPI 1427937390
  NPD
• Cep America - Anesthesia PC

  • Anesthesiology Physician
  • Langhorne, PA
  • NPI 1093678229
  NPD

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

• Keck Medical Center of Usc

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1013514199
  Care Compare affiliation
• Saddleback Memorial Medical Center

  • General Acute Care Hospital
  • Laguna Hills, CA
  • NPI 1275576381
  Care Compare affiliation
• Usc Arcadia Hospital

  • General Acute Care Hospital
  • Arcadia, CA
  • NPI 1508851288
  Care Compare affiliation

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

{
    "created_epoch": "1618272000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762819200000",
    "number": "1881274744",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "22922 LOS ALISOS BLVD",
            "address_2": "STE K PMB 368",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926912856"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "24451 HEALTH CENTER DR",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533689",
            "telephone_number": "949-837-4500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "300 W Huntington Dr",
            "address_purpose": "LOCATION",
            "city": "Arcadia",
            "state": "CA",
            "postal_code": "910073402",
            "country_code": "US",
            "telephone_number": "626-574-3540",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "YIM",
        "first_name": "AARON",
        "middle_name": "MATTHEW",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-13",
        "last_updated": "2025-11-11",
        "certification_date": "2025-11-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A192568",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lois Beverly Yeh, PSY.D.
• Tina Yeh
• Maria Alejandra Yepez Palomo
• Anna Yeung, D.O.
• Christopher Han-Lin Yian, M.D.
• Fanis Yip
• York Retirement Homes, Inc.
• Nicole Nosrat Young, MSW, LCSW
• Emily Yu, PA-C
• Sally Yu

• Anesthesiology Physician in Laguna Hills, CA
• Providers in Laguna Hills, CA by specialty
• Anesthesiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 11, 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.