William N Sokol Jr., MD

Primary specialty

Allergy & Immunology PhysicianTaxonomy code 207K00000X

License

C31823 Issued in CA

Practice address

400 Newport Center Dr
Ste 406
Newport Beach, CA 92660-7630

Phone

(949) 645-3374

Fax

(949) 645-2410

NPI assigned

Aug 10, 2005

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

Allergy/ImmunologyAlso: Internal Medicine

Education

Ohio State University College of Medicine, 1968

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224

Merit-based Incentive Payment System (MIPS)

Final score

16.98 of 100Reported as individual

Quality

0

Improvement activities

0

Cost

56.61

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• William N Sokol Jr M D Inc

  • Allergy & Immunology Physician
  • Newport Beach, CA
  • NPI 1538431598
  Medicare reassignment NPD Authorized official
• Hoag Memorial Hospital Presbyterian

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1518951300
  NPD (past)
• St Joseph Hospital of Orange

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1912982216
  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

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

{
    "created_epoch": "1123632000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1497756522",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4950 BARRANCA PKWY",
            "address_2": "STE 200",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926048651",
            "telephone_number": "949-645-3374",
            "fax_number": "949-645-2410"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 NEWPORT CENTER DR",
            "address_2": "STE 406",
            "city": "NEWPORT BEACH",
            "state": "CA",
            "postal_code": "926607630",
            "telephone_number": "949-645-3374",
            "fax_number": "949-645-2410"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SOKOL",
        "first_name": "WILLIAM",
        "middle_name": "N",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-10",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207K00000X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology",
            "state": "CA",
            "license": "C31823",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Allergy & Immunology Physician in Newport Beach, CA
• Providers in Newport Beach, CA by specialty
• Allergy & Immunology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.