Organization Active NPI

Rejan McCaskill MD Inc

  • Internal Medicine Physician
  • Newport Beach, CA
National Provider Identifier
1376152314
Registry record updated Sep 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
REJAN MCCASKILL MD INC
Practice address
320 Superior Ave Ste 330
Newport Beach, CA 92663-2772
Phone
(949) 791-2000
Fax
(949) 791-2001
NPI assigned
Jul 27, 2020
Last updated
Sep 3, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 3, 2025

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

Authorized official

Name
Rejan C. McCaskill, MDNPI 1790852606
Title
Owner
Phone
(949) 791-2000

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
Internal Medicine Physician 207R00000X NU Primary

Addresses

Primary practice location

320 Superior Ave Ste 330
Newport Beach, CA 92663-2772

Mailing address

PO Box 1855
Suisun City, CA 94585-4855
Phone (657) 241-3600

Other identifiers 1

IdentifierTypeStateIssuer
CB355667OtherCAMEDICARE

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20200923002269 CA Part B Supplier - Clinic/Group Practice 7416376561 Receives reassigned benefits from 1 practitioner
Practice locations: Newport Beach, CA

National Provider Directory

National Provider Directory

Locations

320 Superior Ave
Ste 330
Newport Beach, CA 92663
Phone (949) 791-2000

Practitioners & affiliated clinicians

Practitioners 2

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": "1595808000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1756857600000",
    "number": "1376152314",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1855",
            "city": "SUISUN CITY",
            "state": "CA",
            "postal_code": "945854855",
            "telephone_number": "657-241-3600",
            "fax_number": "657-241-7708"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "320 SUPERIOR AVE STE 330",
            "city": "NEWPORT BEACH",
            "state": "CA",
            "postal_code": "926632772",
            "telephone_number": "949-791-2000",
            "fax_number": "949-791-2001"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "REJAN MCCASKILL MD INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2020-07-27",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A",
        "authorized_official_last_name": "MCCASKILL",
        "authorized_official_first_name": "REJAN",
        "authorized_official_middle_name": "C.",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "949-791-2000",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE",
            "identifier": "CB355667",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Newport Beach, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 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.