Physician Profile
Sergio J. Marquez, MD
Unclaimed ProfileAbout Dr. Marquez
Based in Loma Linda, CA, Sergio J. Marquez, MD is listed in the NPI registry under emergency medicine. NPI 1851967178 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (909) 558-4085
- Email not available
Practice Locations
11234 ANDERSON STREET, GME OFFICE WESTERLY SUITE C
Loma Linda, CA 92354
820 E Mountain View St
Barstow, CA 92311
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency physicians at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Other emergency physicians in Loma Linda 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Marquez?
Dr. Marquez is an emergency physician in Loma Linda, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
What is Dr. Marquez's address?
Dr. Marquez is listed at 11234 Anderson Street, Gme Office Westerly Suite C, Loma Linda, CA 92354. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Marquez?
The number on file is (909) 558-4085. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Marquez's NPI number?
Dr. Marquez's National Provider Identifier is 1851967178. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Marquez train?
Dr. Marquez attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marquez been practicing?
Dr. Marquez has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
Has Dr. Marquez confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marquez. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.