The Indian Energy Service Center (IESC) coordinates and processes Indian energy, mineral and renewable energy development and leasing activities across the Department of the Interior’s bureaus. The IESC is staffed by the Bureau of Indian Affairs (BIA), the Office of Natural Resources Revenue (ONRR), the Bureau of Land Management (BLM), and the Bureau of Trust Funds Administration (BTFA), formerly the Office of the Special Trustee for American Indians (OST).  

To contact IESC and its constituent branches, please use the staff directory below. 

Staff RoleName/Email ContactAgency
IESC DirectorCarla ClarkBIA
Office of Deputy Director
IESC Deputy Director – ActingCraig WilliamsonBLM
IESC Trust Reform LiaisonJohnna SpriggsBIA
IESC Program AnalystSharon Spotted BearBIA
IESC Administrative SpecialistShelli GrywusiewiczBIA
Real Estate Services Branch
Real Estate Services Branch ChiefAlbert BondBIA
IESC Realty SpecialistKaren AustinBIA
IESC Realty Specialist – FieldLiz BerndtBIA
IESC Realty SpecialistLaWanda GibsonBIA
IESC Realty Specialist – FieldRenita Howling WolfBIA
IESC Realty SpecialistLaura Little IronBIA
IESC Realty SpecialistJason PadillaBIA
IESC Natural Resources Specialist – GISHayes HaasBIA
System Administrator IIIMike GutierrezBIA
Engineering Services Branch
Engineering Services Branch ChiefCraig WilliamsonBLM
IESC Supervisory Petroleum EngineerJack SavageBLM
IESC Petroleum EngineerMitch HasbrouckBLM
IESC Petroleum EngineerChris KosteleckyBLM
IESC Petroleum EngineerAbdinur (Abdi) SaladBLM
IESC Production Accountability TechnicianLinda BozemanBLM
IESC Production Accountability TechnicianJudith YeagerBLM
IESC Land Law ExaminerMayom AchukBLM
IESC Land Law ExaminerJami RussellBLM
Mineral Services Branch
IESC Minerals Revenue SpecialistJustin GallegosONRR
IESC Minerals Revenue SpecialistMatt MooreONRR
Beneficiary Services Branch
Beneficiary Services Branch ChiefMichelle MorrisonBTFA
IESC Accounting TechnicianSunny RasmussenBTFA
IESC Trust Accounts AdministratorKatrina BrownBTFA

Contact Us

Indian Energy Service Center
13922 Denver West Parkway, Building 54, Suite 300
Lakewood, CO 80401
9:00 a.m.–4:00 p.m. MDT, Monday–Friday.