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 Role | Name/Email Contact | Agency |
|---|---|---|
| IESC Director | Carla Clark | BIA |
| Office of Deputy Director | ||
| IESC Deputy Director – Acting | Craig Williamson | BLM |
| IESC Trust Reform Liaison | Johnna Spriggs | BIA |
| IESC Program Analyst | Sharon Spotted Bear | BIA |
| IESC Administrative Specialist | Shelli Grywusiewicz | BIA |
| Real Estate Services Branch | ||
| Real Estate Services Branch Chief | Albert Bond | BIA |
| IESC Realty Specialist | Karen Austin | BIA |
| IESC Realty Specialist – Field | Liz Berndt | BIA |
| IESC Realty Specialist | LaWanda Gibson | BIA |
| IESC Realty Specialist – Field | Renita Howling Wolf | BIA |
| IESC Realty Specialist | Laura Little Iron | BIA |
| IESC Realty Specialist | Jason Padilla | BIA |
| IESC Natural Resources Specialist – GIS | Hayes Haas | BIA |
| System Administrator III | Mike Gutierrez | BIA |
| Engineering Services Branch | ||
| Engineering Services Branch Chief | Craig Williamson | BLM |
| IESC Supervisory Petroleum Engineer | Jack Savage | BLM |
| IESC Petroleum Engineer | Mitch Hasbrouck | BLM |
| IESC Petroleum Engineer | Chris Kostelecky | BLM |
| IESC Petroleum Engineer | Abdinur (Abdi) Salad | BLM |
| IESC Production Accountability Technician | Linda Bozeman | BLM |
| IESC Production Accountability Technician | Judith Yeager | BLM |
| IESC Land Law Examiner | Mayom Achuk | BLM |
| IESC Land Law Examiner | Jami Russell | BLM |
| Mineral Services Branch | ||
| IESC Minerals Revenue Specialist | Justin Gallegos | ONRR |
| IESC Minerals Revenue Specialist | Matt Moore | ONRR |
| Beneficiary Services Branch | ||
| Beneficiary Services Branch Chief | Michelle Morrison | BTFA |
| IESC Accounting Technician | Sunny Rasmussen | BTFA |
| IESC Trust Accounts Administrator | Katrina Brown | BTFA |
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.
