SSDI Administrative Law Judge

Hon. David R. Mazzi

SSDI Administrative Law Judge at the Oakland Hearing Office · 7 years on the bench · 13,138 lifetime decisions

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Approval rates

When evaluating your claim, it is helpful to look at how a judge's approval rate compares to broader benchmarks. Judge Mazzi maintains a lifetime approval rate of 75%, which stands in contrast to the 65% office average and the 58% national average. These figures are derived from a substantial docket of 13,138 lifetime decisions, providing a stable view of his historical decision-making. These aggregate rates describe past decisions rather than predicting the outcome of your specific hearing.

Metric Judge Mazzi Oakland National
Approval rate 75% 65% 58%
Fully favorable 64%
Denials 25%

Office- and national-level breakdowns of fully favorable vs denial rates aren't currently published by SSA in the per-office disposition data. The judge's own breakdown is the detail we have today.

Approval rate over time

Year-over-year approval rate across Judge Mazzi's docket. Annual rates fluctuate with the mix of cases SSA assigns; the longer-run pattern is more informative than any single year.

Judge Mazzi
0%20%40%60%80%100%FY16FY22
Source: SSA OHO disposition data. Approval rate = fully favorable + partially favorable decisions divided by total dispositions excluding dismissals.

Decision pattern

Over his 7 years on the bench, Judge Mazzi has presided over 13,138 lifetime decisions. While his early years saw higher approval rates, recent data indicates a move toward the office mean. This evolution in his decision pattern may reflect changes in case complexity or the specific evidence presented in recent years. Understanding this trajectory helps you prepare a case that directly addresses the evidentiary standards he prioritizes.

Preparing for an SSDI hearing

The guidance below applies to any SSDI hearing, not specifically to Judge Mazzi's bench. Judge-specific preparation guidance requires a corpus of public Appeals Council decisions involving each judge, which we haven't built yet.

  • Bring a clean treating-physician record. Longitudinal primary-care or specialist notes spanning the disability period, with consistent symptom documentation, are typically the strongest evidence at hearing. A single month's records usually aren't enough.
  • Don't rely on consultative exams alone. If your medical evidence is built primarily around a one-time CE finding, expect detailed questioning. Supplement with treating-source statements where possible.
  • Prepare for daily-activity questions. Have honest, specific answers about a typical day. Answers that conflict with the medical record (in either direction) tend to hurt credibility.
  • Expect transferable-skills probing. A vocational expert will usually testify about jobs available to someone with your limitations. Your representative should be prepared to cross-examine.

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About the Oakland hearing office

The Oakland Hearing Office serves a large population in California, managing a high volume of cases with a bench of 6 judges. The office currently reports an approval rate of 65%, reflecting the diverse nature of claims processed in this region. You can expect a formal hearing process where medical documentation and vocational testimony are central to the outcome. You can see the Oakland Hearing Office page for the full ALJ roster.

Other judges at this hearing office

The Social Security Administration assigns cases through a workload-balancing algorithm, meaning the assignment of a judge is essentially random. Within the Oakland Hearing Office, lifetime approval rates among the bench range from 47% to 75%. Because of this variance, it is important to focus on the strength of your medical evidence regardless of which judge is assigned. You can review the office-wide trends to understand the broader environment of your hearing.

Your odds change dramatically with a lawyer

SSDI hearing approval rates — represented vs. on your own

WITHOUT A LAWYER
baseline approval rate
Unrepresented claimants
WITH A LAWYER
~3×
higher approval rate
Represented claimants
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Source: U.S. Government Accountability Office, GAO-18-37. The 3× gap is a population-wide average across all judges; individual outcomes vary.

Frequently asked questions