Federal judge analytics
Compare federal district judges
Filter and sort public federal civil docket patterns across 1,201 matched judge profiles in 91 U.S. district courts.
No composite score. Every ranking uses the metric and filing window you select, with sample size and district context shown.
Federal case data current through June 30, 2026 · Sources vary by metric.
Federal civil dockets
Explore judge-level patterns
Every result links to the judge profile and its full analytics.
18 matching judge profiles · 5 maximum per page
Metrics describe public docket cohorts—not judicial quality, outcomes, or current workload.
| JudgeA–Z | Assigned civil cases | Filing cohort status | Median disposition | Leading case mix |
|---|---|---|---|---|
| Margaret Rose GuzmanCurrent active · service 2023-03-03–present · Judge · U.S. District Court for the District of Massachusetts | 134Attributed assigned cases; not workload | 128 active6 terminated · 4% | Not publishedSuppressed; N=6 | 440 Civil Rights: Other8%463 Habeas Corpus - Alien Detainee5% |
| Mark Gerald MastroianniCurrent active · service 2014-06-05–present · Judge · U.S. District Court for the District of Massachusetts | 86Attributed assigned cases; not workload | 79 active7 terminated · 8% | Not publishedSuppressed; N=7 | 440 Civil Rights: Other13%190 Contract: Other6% |
| Michael Adrian PonsorCurrent senior · service 1994-02-14–present · Judge · U.S. District Court for the District of Massachusetts | No attributed assigned civil cases in this period.This does not imply zero workload. | |||
| Myong Jin JounCurrent active · service 2023-07-14–present · Judge · U.S. District Court for the District of Massachusetts | 284Attributed assigned cases; not workload | 226 active58 terminated · 20% | 0.5 mo.N=58 · district median 0.7 mo. (13 profiles) | 463 Habeas Corpus - Alien Detainee48%440 Civil Rights: Other6% |
| Nathaniel M. GortonCurrent senior · service 1992-09-24–present · Judge · U.S. District Court for the District of Massachusetts | 130Attributed assigned cases; not workload | 114 active16 terminated · 12% | 1.2 mo.N=16 · district median 0.7 mo. (13 profiles) | 463 Habeas Corpus - Alien Detainee62%820 Copyright4% |
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Methodology and limits
Attribution. Profiles are matched by federal identifiers or a high-confidence exact name, court, and service overlap. Assigned and referred matters are separated; this explorer shows assigned cases.
Filing cohort. Active and terminated counts describe cases filed inside the selected window as of its end. They are not a clearance rate or a measure of current workload.
Disposition cohort. Median time uses terminated cases from the same attributed assigned filing cohort shown in the selected window. It is withheld below 10 qualifying cases and excludes land condemnation, prisoner petitions, deportation reviews, recovery of overpayments, and enforcement of judgments.
No outcome claims. These data do not measure wins, losses, merits, judicial quality, or attorney success. Use the linked judge profiles and source records to verify legally significant information.