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DR. SERGIO JOSE MARQUEZ MD
NPI 1851967178
Emergency Medicine in Loma Linda, CA

Active since May 27, 2021PECOS EnrolledAccepts Medicare Assignment
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C, LOMA LINDA, CA 92354(909) 558-4085 Get Directions Write a Review

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

About Dr. Sergio Jose Marquez Md NPPES

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

DR. SERGIO JOSE MARQUEZ MD (NPI 1851967178) is an individual emergency medicine provider in Loma Linda, California, licensed in California (A198101) and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Barstow, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1851967178
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. SERGIO JOSE MARQUEZCredential: MD
Location Address11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE CLoma Linda, CA 92354-2804
Mailing Address820 E Mountain View StBarstow, CA 92311-3004 · (858) 863-7382 · Fax (858) 201-5136
Phone(909) 558-4085
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMay 27, 2021
Last NPPES UpdateOctober 3, 2025
NPPES CertifiedOctober 3, 2025
✔ NPI 1851967178 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A198101
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C, Loma Linda, CA 92354
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Secondary Practice Location 1

Location 1820 E Mountain View StBarstow, CA 92311-3004 · Phone (858) 863-7382 · Fax (858) 863-7382

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Sergio Jose Marquez Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7719428143
PECOS Enrollment IDI20240925000956
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92354 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 15

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

PAULINE KUM-BEE SEO MD
Student in an Organized Health Care Education/Training Program
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4015
EUN HYE JOO MD
Student in an Organized Health Care Education/Training Program
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4174
MOHAMED HABIB EL-FARRA
Student in an Organized Health Care Education/Training Program
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-2822
PATRICK LEAF MD
Emergency Medicine
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4085
HECTOR MIGUEL ALMANZAR-RAMOS MD
Internal Medicine
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4074
JOSEPH MIN
Student in an Organized Health Care Education/Training Program
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4174
DR. HAMZA ABU-HUSSAIN MD
Student in an Organized Health Care Education/Training Program
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4074
DR. SHREYA SREERAM MD
Student in an Organized Health Care Education/Training Program
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C, LOMA LINDA CA 92354-2804
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4174

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 Sergio Marquez's NPI number?

The NPI number for Sergio Marquez is 1851967178. It was assigned to this individual provider in the NPPES registry on May 27, 2021.

Where is Sergio Marquez located?

Sergio Marquez practices at 11234 Anderson Street, Gme Office Westerly Suite C, Loma Linda, CA 92354. The listed phone number is (909) 558-4085.

What is Sergio Marquez's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Sergio Marquez enrolled in Medicare?

Yes. Sergio Marquez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Sergio Marquez was last updated on October 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.