Patrick K Siu, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

G86731 Issued in CA

Practice address

422 Arneill Rd Ste B
Camarillo, CA 93010-6434

Phone

(805) 383-4510

Fax

(805) 383-4511

NPI assigned

Jun 27, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 7

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Community Memorial Health System

  • Multi-Specialty Clinic/Center
  • Oxnard, CA
  • NPI 1124067574
  NPD (past)
• Community Memorial Health System

  • Multi-Specialty Clinic/Center
  • Ojai, CA
  • NPI 1588446892
  NPD (past)
• Islands Emergency Medical Service Hawaii, LLC

  • Emergency Medical Services (Emergency Medicine) Physician
  • Honolulu, HI
  • NPI 1154393353
  NPD (past)

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

{
    "created_epoch": "1151366400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1629005475",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2705 LOMA VISTA RD",
            "address_2": "SUITE 205",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930031581",
            "telephone_number": "805-667-2801",
            "fax_number": "805-667-2865"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "422 ARNEILL RD STE B",
            "city": "CAMARILLO",
            "state": "CA",
            "postal_code": "930106434",
            "telephone_number": "805-383-4510",
            "fax_number": "805-383-4511"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIU",
        "first_name": "PATRICK",
        "middle_name": "K",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-27",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207PE0004X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Emergency Medical Services",
            "state": "HI",
            "license": "MD 4738",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G86731",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01348502",
            "state": "HI"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "RHM08609F",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "SHIELD/HMSA",
            "identifier": "D0014375",
            "state": "HI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS",
            "identifier": "050394",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "RHM18553H",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "RHM08608F",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "ZZT40394F",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Leslie M. Singer, PHD
• Bobbi Singh
• Jaspreet Singh
• Sarina M. Singhi, NP
• Jason Sirkin
• Judith C Siudara, MFT
• Robert Skene
• Edwina Skinner, M.D.
• Audrey Geesey Slaugh, LMFT
• Mike Francis Sloyan

• Internal Medicine Physician in Camarillo, CA
• Providers in Camarillo, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.