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REJAN MCCASKILL MD INC
NPI 1376152314
Internal Medicine in Newport Beach, CA

Active since July 27, 2020CLIA 05D2213731 · Waiver
320 SUPERIOR AVE STE 330, NEWPORT BEACH, CA 92663(949) 791-2000(949) 791-2001 Get Directions Write a Review

NPPES record last updated: September 3, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 3, 2025, Nov 10, 2023, Feb 18, 2021 and 1 more (4 updates tracked since 2020).

About Rejan Mccaskill Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

REJAN MCCASKILL MD INC (NPI 1376152314) is a healthcare organization registered as an internal medicine in Newport Beach, California and active in the NPI registry since July 2020. The organization holds a CLIA Waiver certificate valid through February 15, 2027 and lists Rejan C. Mccaskill, Owner, as its authorized official.

NPPES Registry Identity

NPI1376152314
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameREJAN MCCASKILL MD INC
Location Address320 SUPERIOR AVE STE 330Newport Beach, CA 92663-2772
Mailing AddressPo Box 1855Suisun City, CA 94585-4855 · (657) 241-3600 · Fax (657) 241-7708
Phone(949) 791-2000
Fax(949) 791-2001
Organization SubpartNo
Authorized OfficialRejan C. MccaskillOwner · (949) 791-2000
Enumeration DateJuly 27, 2020
Last NPPES UpdateSeptember 3, 20254 updates tracked since enumeration
NPPES CertifiedSeptember 3, 2025
✔ NPI 1376152314 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
320 SUPERIOR AVE STE 330, Newport Beach, CA 92663
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Other Identifiers 1

OtherCB355667CA · Medicare

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2213731

Rejan Mccaskill, MD Inc · Newport Beach, CA
Active · expires Feb 15, 2027
CLIA Number05D2213731
Laboratory TypePhysician Office
Certificate Effective DateFebruary 16, 2025
Certificate Expiration DateFebruary 15, 2027
Laboratory DirectorRejean Mccaskill
Laboratory Phone(949) 791-2000
Laboratory LocationRejan Mccaskill, MD Inc355 Placentia Ave Ste 208, Newport Beach, CA 92663
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NANCY LOVE M.D.
Internal Medicine
320 SUPERIOR AVE STE 330
NEWPORT BEACH, CA 92663
Orange County (949) 873-6858
DAVID J SHEFFNER M.D.
Psychiatry & Neurology (Forensic Psychiatry)
320 SUPERIOR AVE STE 330
NEWPORT BEACH, CA 92663
Orange County (949) 645-4323
NANCY LOVE, M.D.
Clinic/Center (Primary Care)
320 SUPERIOR AVE STE 330
NEWPORT BEACH, CA 92663
Orange County (949) 873-6858
REJAN C. MCCASKILL M.D., F.A.C.P.
Internal Medicine
320 SUPERIOR AVE STE 330
NEWPORT BEACH, CA 92663
Orange County (949) 791-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rejan Mccaskill MD Inc's NPI number?

The NPI number for Rejan Mccaskill MD Inc is 1376152314. It was assigned to this organization in the NPPES registry on July 27, 2020.

Where is Rejan Mccaskill MD Inc located?

Rejan Mccaskill MD Inc is located at 320 Superior Ave Ste 330, Newport Beach, CA 92663. The listed phone number is (949) 791-2000.

What is Rejan Mccaskill MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does Rejan Mccaskill MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2213731) is associated with this NPI, valid through February 15, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Rejan Mccaskill MD Inc was last updated on September 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.