Hospitalist in SAN DIEGO, CA
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Dr. Matthew Russell Callahan is a physician specializing in hospital medicine in San Diego, CA.
Generated from public NPI Registry data only. Not independently verified — confirm credentials directly with the practice.
Dr. MATTHEW RUSSELL CALLAHAN specializes in Hospitalist.
Dr. MATTHEW RUSSELL CALLAHAN practices in SAN DIEGO, CA.
Dr. MATTHEW RUSSELL CALLAHAN's NPI number is 1083901839.