Hal S Shimazu, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

G37057 Issued in CA

Practice address

845 E Chapman Ave
Orange, CA 92866-1622

Phone

(714) 997-2899

Fax

(714) 289-7062

NPI assigned

Nov 6, 2006

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

Other identifiers 1

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

Family Practice

Education

University of California, Davis School of Medicine, 1977

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Centers for Family Medicine GPGroup PAC ID 9931143799, 87 clinicians

Healthcare Partners Affiliates Medical GroupGroup PAC ID 7315842002, 775 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224
• Providence St. Joseph Hospital Hospital, Orange, CA, CCN 050069

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/GCDDAA/Endpoint/GCDDAA

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.

• Centers for Family Medicine GP

  dba Optumcare Medical Group

  • Family Medicine Physician
  • Los Alamitos, CA
  • NPI 1467598243
  Medicare reassignment Care Compare group NPD
• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593

  Family Medicine

  Medicare reassignment Care Compare group NPD
• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• University of California Irvine

  dba UCI Family Health Center - Anaheim

  • Federally Qualified Health Center (FQHC)
  • Anaheim, CA
  • NPI 1598790529
  NPD (past)
• University of California Irvine

  dba Uci Health

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  NPD (past)
• Memorial Medical Group Inc

  • Durable Medical Equipment & Medical Supplies
  • Phoenix, AZ
  • NPI 1255523643
  NPD (past)

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

• Hoag Memorial Hospital Presbyterian

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1518951300
  Care Compare affiliation
• St Joseph Hospital of Orange

  dba Providence St. Joseph Hospital

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1912982216
  Care Compare affiliation
• St. Joseph Hospital of Orange

  dba Providence St. Joseph Hospital

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1558575746
  Care Compare affiliation

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

{
    "created_epoch": "1162771200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764288000000",
    "number": "1073682241",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "845 E CHAPMAN AVE",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928661622",
            "telephone_number": "714-997-2899",
            "fax_number": "714-289-7062"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SHIMAZU",
        "first_name": "HAL",
        "middle_name": "S",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-06",
        "last_updated": "2025-11-28",
        "certification_date": "2025-11-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "G37057",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G370570",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Evan Shih
• Renshy Shih, D.O.
• Jessica L Shill
• Kenneth Shim
• Prisca Shim
• Hilda Shimizu, B.S
• Albert J Shin
• Caitlin Shin
• Erica Shin
• Eugene Shin

• Family Medicine Physician in Orange, CA
• Providers in Orange, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 28, 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.