Dr. Don Duff is a nephrologist in Louisville. Operator refreshes the health score, market rank, and review feed every night.
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 Dr. Don Duff broke down on Apr 28, 2026.
Operator ranks every nephrologist in Louisville every night at 2 am HST using reviews, response rate, and local market share.
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