Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Gilbert Chen, MD

Individual provider Internal Medicine Physician · NPI 1013479120

Gilbert Chen, MD practises Internal Medicine in Colton, California. Qualified in 2019, 7 years ago. Practices with Quantum Healthcare Medical Associates Inc, a 109-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2019
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

400 N Pepper Ave
Colton, CA 92324-1801
Phone: (909) 580-6343
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence PTL390 (CA)

Record details

NPI number1013479120
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 5, 2019
Last updated in NPPESJune 1, 2022
Certification dateJune 1, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Quantum Healthcare Medical Associates Inc — 109 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients337
Services billed 390 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Quantum Healthcare Medical Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 109 clinicians in the practice; 12 are shown here.

Other providers in Colton