Phoenix, AZ’s Barbara J. MacCollum, M.D., is a gastroenterologist dedicated to providing expert medical care and treatment for digestive health issues.
Operator computes a Health score every night at 2 am HST. It is the one number that tells you if this shop is winning, losing, or steady. Here is how Barbara J. MacCollum, M.D. broke down on Apr 25, 2026.
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