Active NPI
Rejan McCaskill MD Inc
- Internal Medicine Physician
- Newport Beach, CA
National Provider Identifier
1376152314
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- 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, 2025
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Rejan C. McCaskill, MD
- 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) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| CB355667 | Other | CA | MEDICARE |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
Enrollment records 1
National Provider Directory
National Provider DirectoryLocations
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.
-
- Internal Medicine Physician
- Newport Beach, CA
- NPI 1790852606
-
- Internal Medicine Physician
- Newport Beach, CA
- NPI 1427332030
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.