Doc MacKenzie Indianapolis 500 Stats
| Starts | Total Laps | Poles | Wins | Top 5 | Top 10 | Races Led | Laps Led | Winnings |
| 5 | 672 | 0 | 0 | 1 | 2 | 0 | 0 | $9,780 |
| Year | Finish | Start | Car Num. | Car Name / Entrant | Make / Model | Qual. Speed | Status | Laps | Led | Winnings |
| 1936 | 3 | 4 | 10 | Gilmore Speedway | Wetteroth / Offy / Firestone | 116.961 | 107.46 | 200 | 0 | $6,900 |
| 1935 | 9 | 15 | 8 | Pirrung | Rigling / Miller / Firestone | 114.294 | 100.598 | 200 | 0 | $1,500 |
| 1934 | 29 | 26 | 73 | Cresco | Mikan-Carson / Studebaker / Firestone | 111.933 | Accident | 15 | 0 | $490 |
| 1933 | 18 | 39 | 51 | Ray Brady | Duesenberg / Studebaker / Firestone | 108.073 | Rear axle | 192 | 0 | $330 |
| 1932 | 28 | 39 | 42 | Brady | Studebaker / Studebaker / Firestone | 108.154 | Engine | 65 | 0 | $560 |