MPLX GP LLC
Leon Fiedler is an experienced accounting professional currently serving as Lead Accountant at MPLX GP LLC since September 2025. Previously, Leon held the position of Manager of Gas Plant Accounting at Northwind Midstream Partners from July 2024 to September 2025, and before that, worked as Plant Accounting Supervisor at Durango Midstream LLC from December 2017 to July 2024, supervising accounting operations for multiple plants and gathering systems across several states. Leon's career includes roles such as Gas Plant Accountant at American Midstream, Gas Accountant III at Enbridge, Producer Services Analyst at Memorial Resource Development Corp., Marketing Accounting Analyst at Sabine Oil & Gas LLC, and Senior Revenue Accountant at DCP Midstream. Leon holds a Bachelor of Business Administration in Finance from Texas State University, completed in 2006.
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