Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Brian Arellano Reyes, MD

Individual provider Internal Medicine Physician · NPI 1972574739

Dr. Brian Arellano Reyes, MD is an Internal Medicine in Brentwood, California. Qualified in 1989, 37 years ago. Practices with Bass Medical Group, a 292-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
37
Licensed in
CA
In the registry since
2006
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

6600 Lone Tree Way Ste B
Brentwood, CA 94513-5256
Phone: (925) 276-9908
Fax: (925) 276-9893
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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 A73587 (CA)

Record details

NPI number1972574739
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 30, 2006
Last updated in NPPESJune 27, 2025
Certification dateJune 27, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Bass Medical Group — 292 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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