Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Sergio Jose Marquez, MD

Emergency Medicine Physician in Loma Linda, CA · enumerated 2021.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1851967178

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Sergio Jose Marquez

Credential MD

Sex Male

Practice address 11234 Anderson Street, Gme Office Westerly Suite C, Loma Linda, CA, 92354

Phone (909) 558-4085

Enumeration date May 27, 2021

Last updated in NPPES Oct 3, 2025

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License A198101 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Sergio Marquez's NPI record?

Cross-check NPI 1851967178 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851967178 active?

Yes, as of the latest NPPES snapshot, NPI 1851967178 is active (record last updated 2025-10-03).

Other providers at this practice address

Browse all →

Patrick Leaf Emergency Medicine Physician · Loma Linda, CA NPI 1316470560 Hector Almanzar-Ramos Internal Medicine Physician · Loma Linda, CA NPI 1326544958 Nayer Toma Anesthesiology Physician · Loma Linda, CA NPI 1558924209 Jonathan Pham Hospitalist Physician · Loma Linda, CA NPI 1548825284 Nicole Yim Interventional Pain Medicine Physician · Loma Linda, CA NPI 1467076190 Kettlen Cristh Ataides Borda Student in an Organized Health Care Education/Training Program · Loma Linda, CA NPI 1235719329 Armando Camacho-Santos Internal Medicine Physician · Loma Linda, CA NPI 1700453933 Hamza Abu-Hussain Student in an Organized Health Care Education/Training Program · Loma Linda, CA NPI 1407424153

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-03.