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6220 West Corporate Oaks Drive
Crystal River, FL 34429


Schlumberger Accounting Services Inc.

(352) 795-3691

Mary Essenwein

Mary Essenwein

Accounting Staff

Mary Ann is our payroll clerk and bookkeeper. She ensures our clients financial transactions are properly recorded and maintained. She works closely with Bob and Jennifer to provide quality service to our clients.

She earned a two year degree in Computer Science at St Petersburg College and has over 30 years of office experience.

Outside the office, Mary Ann enjoys being with family, swimming, and walking. She also has earned a first degree brown belt in mixed martial arts.