Summit Neurology Inc

Primary specialty

Neurology PhysicianTaxonomy code 2084N0400X

Legal business name

SUMMIT NEUROLOGY INC

Practice address

7781 Garfield Ave
Huntington Beach, CA 92648-2026

Phone

(949) 891-1530

NPI assigned

Aug 4, 2023

Organization subpart

No

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

Authorized official

Name

Mohammad Hajighasemi, MD

Title

Owner

Phone

(805) 996-0456

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 6

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Mohammad Reza Hajighasemi-Ossareh, MD

  • Neurology Physician
  • Westminster, CA
  • NPI 1144683137
  Medicare reassignment Care Compare group NPD
• Geoffrey Konye

  • Emergency Medicine Physician
  • Bakersfield, CA
  • NPI 1730504416
  Medicare reassignment Care Compare group NPD
• Mimi Shishou Lee, M.D.

  • Neurology Physician
  • Ventura, CA
  • NPI 1164684973
  Medicare reassignment Care Compare group NPD
• Elmer Bigayan Dorosan, NP

  • Nurse Practitioner
  • Los Angeles, CA
  • NPI 1649638842
  Medicare reassignment NPD
• Melissa Kristin Ingkom, N.P.

  • Family Nurse Practitioner
  • Orange, CA
  • NPI 1548564040
  Medicare reassignment NPD
• Cathy M Kim, NP

  • Acute Care Nurse Practitioner
  • Los Angeles, CA
  • NPI 1396307039
  Medicare reassignment NPD

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

{
    "created_epoch": "1691107200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1760054400000",
    "number": "1982386280",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8941 ATLANTA AVE # 170",
            "city": "HUNTINGTON BEACH",
            "state": "CA",
            "postal_code": "926467121",
            "telephone_number": "805-996-0456"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7781 GARFIELD AVE",
            "city": "HUNTINGTON BEACH",
            "state": "CA",
            "postal_code": "926482026",
            "telephone_number": "949-891-1530"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 Hospital Cir",
            "address_purpose": "LOCATION",
            "city": "Westminster",
            "state": "CA",
            "postal_code": "926833910",
            "country_code": "US",
            "telephone_number": "714-893-4541",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "SUMMIT NEUROLOGY INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2023-08-04",
        "last_updated": "2025-10-10",
        "certification_date": "2025-10-10",
        "status": "A",
        "authorized_official_last_name": "HAJIGHASEMI",
        "authorized_official_first_name": "MOHAMMAD",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "805-996-0456",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "2084A2900X",
            "taxonomy_group": "193400000X MULTIPLE SINGLE SPECIALTY GROUP",
            "desc": "Psychiatry & Neurology, Neurocritical Care",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "193400000X MULTIPLE SINGLE SPECIALTY GROUP",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "2084V0102X",
            "taxonomy_group": "193400000X MULTIPLE SINGLE SPECIALTY GROUP",
            "desc": "Psychiatry & Neurology, Vascular Neurology",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Graciela Kuata Sullivan, DDS., MS
• Lacey Sullivan, BCBA
• Leah Barbara Sullivan, FNP-C
• Pamela C Sullivan, MD
• Melanie Summerhayes, PSY.D
• Sun Medical Group Huntington Inc
• Sun Surgery Center Huntington LLC
• Alice C Sun, D.D.S.
• Suncoast Pharmacy, Inc.
• Alex Kiwook Sung, PT, DPT

• Neurology Physician in Huntington Beach, CA
• Providers in Huntington Beach, CA by specialty
• Neurology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 10, 2025; 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.