William Armstrong, MD

Primary specialty

Otolaryngology PhysicianTaxonomy code 207Y00000X

License

G66175 Issued in CA

Practice address

101 The City Dr S
Orange, CA 92868-3201

Phone

(714) 880-7812

NPI assigned

Oct 16, 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

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

Otolaryngology

Education

University of Washington School of Medicine, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University Head and Neck SurgeonsGroup PAC ID 9032191788, 25 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348
• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as apm

Quality

83.7

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

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.

• University Head & Neck Surgeons

  • Otolaryngology Physician
  • Orange, CA
  • NPI 1669437075
  Medicare reassignment Care Compare group NPD
• Bristol Park Medical Group, Inc

  • Family Medicine Physician
  • Costa Mesa, CA
  • NPI 1043266760
  NPD (past)
• University of California Irvine

  • Infusion Therapy Clinic/Center
  • Irvine, CA
  • NPI 1417027475
  NPD (past)
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  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
• University of California Irvine

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1160956800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1738281600000",
    "number": "1063592145",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 S MANCHESTER AVE STE 300",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683219",
            "telephone_number": "714-456-2986"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-880-7812"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARMSTRONG",
        "first_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-16",
        "last_updated": "2025-01-31",
        "certification_date": "2025-01-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "CA",
            "license": "G66175",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Christopher Scott Armstrong, M.D.
• Ethan Armstrong
• Jaiden Armstrong
• Jeffrey Armstrong, M.D.
• Julia Armstrong, MA, CCC-SLP
• Christine Louie Arnaldo, M.D.
• Kristin Arnold
• Tierra Arnold
• Leslie Aroche
• Gabriel Adam Arom, MD

• Otolaryngology Physician in Orange, CA
• Providers in Orange, CA by specialty
• Otolaryngology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 31, 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.