Organization Active NPI

William F Pearce MD Professional Corporation

  • Urology Physician
  • Santa Ana, CA
National Provider Identifier
1851276620
Registry record updated Jan 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Urology PhysicianTaxonomy code 208800000X
Legal business name
WILLIAM F PEARCE MD PROFESSIONAL CORPORATION
Practice address
801 N Tustin Ave Ste 204
Santa Ana, CA 92705-3600
Phone
(714) 450-1047
NPI assigned
Aug 9, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jan 5, 2026

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

Authorized official

Name
Dr. William F Pearce, MDNPI 1730293838
Title
Owner
Phone
(714) 450-1047

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Urology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 208800000X Primary

Addresses

Primary practice location

801 N Tustin Ave Ste 204
Santa Ana, CA 92705-3600

Mailing address

801 N Tustin Ave Ste 204
Santa Ana, CA 92705-3600
Phone (714) 450-1047

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20260122002272 CA Part B Supplier - Clinic/Group Practice 9032696968 Receives reassigned benefits from 1 practitioner
Practice locations: Santa Ana, CA

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1754697600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1767571200000",
    "number": "1851276620",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "801 N TUSTIN AVE STE 204",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927053600",
            "telephone_number": "714-450-1047"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "801 N TUSTIN AVE STE 204",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927053600",
            "telephone_number": "714-450-1047"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WILLIAM F PEARCE MD PROFESSIONAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-08-09",
        "last_updated": "2026-01-05",
        "certification_date": "2026-01-05",
        "status": "A",
        "authorized_official_last_name": "PEARCE",
        "authorized_official_first_name": "WILLIAM",
        "authorized_official_middle_name": "F",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "714-450-1047",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Urology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Santa Ana, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.