Howard S Siegel, M.D.

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

A50183 Issued in CA

Practice address

12062 Valley View St
Suite 200
Garden Grove, CA 92845-1737

Phone

(714) 908-5636

Fax

(714) 908-5616

NPI assigned

Aug 24, 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

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.

• Prime Community Care, Inc.

  • Family Medicine Physician
  • Ontario, CA
  • NPI 1457612582
  NPD (past)

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

{
    "created_epoch": "1156377600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771891200000",
    "number": "1669589750",
    "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",
            "telephone_number": "702-579-3203"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12062 VALLEY VIEW ST",
            "address_2": "SUITE 200",
            "city": "GARDEN GROVE",
            "state": "CA",
            "postal_code": "928451737",
            "telephone_number": "714-908-5636",
            "fax_number": "714-908-5616"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3990 Concours Fl 5",
            "address_purpose": "LOCATION",
            "city": "Ontario",
            "state": "CA",
            "postal_code": "917647970",
            "country_code": "US",
            "telephone_number": "909-605-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIEGEL",
        "first_name": "HOWARD",
        "middle_name": "S",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-24",
        "last_updated": "2026-02-24",
        "certification_date": "2026-02-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A50183",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A501830",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Yuan Shui
• Elizabeth Antonia Siapno
• Daria Sib-Frazer
• Carlos Sicat
• Rupal S. Sidhu
• Vanesa Sierra Herrera
• Emily Putri Sihite
• John L Silberstein, R.PH.
• Kelly E Siler
• Evelyn Melissa Silva Alvarez

• Pediatrics Physician in Garden Grove, CA
• Providers in Garden Grove, CA by specialty
• Pediatrics Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 24, 2026; 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.