Claudette Biemeret

Inspector General

Jorge Oseguera

Deputy Inspector General

 With over 26 years of public sector experience, Jorge Oseguera is a seasoned auditor and leader specializing in government accountability, operational efficiency, and fraud investigations. Mr. Oseguera joined the Bay Area Rapid Transit (BART) Office of the Inspector General (OIG) in January 2024 and is currently serving as the Deputy Inspector General with a key role in overseeing audits and investigations that promote transparency, compliance, and performance improvements within BART’s operations.

Before joining BART, Mr. Oseguera served 14 years as the City Auditor for the City of Sacramento, where he established the city’s first independent audit function and whistleblower hotline, issuing over 70 audit reports and identifying nearly $100 million in financial benefits. Prior to that, he held multiple roles with the San José City Auditor’s Office, spearheading audits that uncovered inefficiencies, cost-saving opportunities, and instances of mismanagement.

Recognized nationally for his expertise, Mr. Oseguera has received multiple prestigious awards from the Association of Local Government Auditors (ALGA) for outstanding audit work. He holds a Master of Public Administration from Syracuse University’s Maxwell School and is a Certified Inspector General Investigator. Mr. Oseguera is a dedicated public servant committed to strengthening public trust through rigorous oversight and accountability.

Jeff Dubsick

Investigative Auditor

 Jeff joined our office in 2021 as our first investigator. His fraud investigations and oversight have resulted in over $1 million in financial recoveries from industry contractors who billed the District for labor, materials, or services they did not provide. Jeff is our office’s expert on the California and Federal False Claims Acts, as well as state and federal laws concerning bribery, gratuities, kickbacks, and improper gift-giving and receipt.

Jeff has over 27 years of federal and state criminal and civil investigative experience, primarily focused on fraud against the government. He holds a bachelor’s degree from U.C. Santa Barbara, is a Certified Inspector General Investigator, and has an Airman’s Certificate (private pilot license). Jeff’s home station is Civic Center, from which he commutes to BART Headquarters in Oakland—with both pride and a keen eye for fraud, waste, and abuse.

Jessica Spikes

Executive Assistant

Jorge Luis & Ruby joined BART’s “Take Our Kids to Work Day” and visited the OIG office to see where their dad, Jorge, works!

The OIG team conducting site visits as part of our construction contract change order audit.

The OIG team visiting BART PD for a K9 demonstration and tour—gaining insight into their important work!

Staff representing the OIG at the Let’s Grow BART Employees Career Expo!

The OIG team attending the Association of Inspector General (AIG) training conferece.

The OIG team touring the Operations Control Center, the heart of BART.

Having a great time at the annual BART Golf Tournament! Fun, friendly competition, and team spirit all in one day.