Gregui J. Mercado is an Administrative Law Judge at the San Juan office. Over 5 years on the bench and 9,649 lifetime decisions, the judge has maintained a 73% approval rate. This is 15 percentage points above the national average of 58%. Aggregate rates describe past decisions, not predictions for your individual hearing. An attorney can help you prepare for the specific requirements of this judge's courtroom.
This page presents publicly available SSA Office of Hearings Operations disposition data, with no editorial rating or evaluation. ALJs are independent decisionmakers; aggregate statistics describe past patterns, not predictions of how any individual case will be decided. Information here is provided for hearing preparation, not as legal advice.
Approval rates
Judge Mercado's approval rate is calculated from a docket of 9,649 lifetime decisions. In the most recent reporting period, this judge maintained a rate 15 percentage points above the national average of 58%. Comparing these metrics against the San Juan Hearing Office average of 68% helps contextualize performance. Aggregate rates describe past decisions rather than predicting outcomes for your individual hearing.
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 Mercado's docket. Annual rates fluctuate with the mix of cases SSA assigns; the longer-run pattern is more informative than any single year.
Decision pattern
Over a 5-year tenure, your judge's approval rate shifted from 81% in 2016 to 60% in 2020. This trend reflects a transition from higher initial allowance rates toward a more moderate position relative to the office average. Such shifts are common as judges refine their approach to case evidence and testimony over time, and recent data indicates a stabilization in this decision-making pattern.
Preparing for an SSDI hearing
The guidance below applies to any SSDI hearing, not specifically to Judge Mercado'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.
Hearing with Judge Mercado? See if a free benefits review fits your case.
Free Benefits ReviewAbout the San Juan hearing office
The San Juan Hearing Office serves you across Puerto Rico, managing a high volume of disability cases. With an office-wide latest approval rate of 68%, this location operates within a complex regional legal environment. When you appear here, you should be prepared for rigorous documentation requirements and thorough evidentiary reviews. You can visit the San Juan Hearing Office page for the full ALJ roster.
Other judges at this hearing office
The Social Security Administration assigns cases using a workload-balancing algorithm, meaning your assignment is essentially random. Across the San Juan Hearing Office, the 6 ALJs range from 43% to 83% in lifetime approval rates. This variance highlights why understanding the specific tendencies of your assigned judge is a standard part of case preparation, regardless of which judge you are assigned.
Your odds change dramatically with a lawyer
SSDI hearing approval rates — represented vs. on your own
Source: U.S. Government Accountability Office, GAO-18-37. The 3× gap is a population-wide average across all judges; individual outcomes vary.
