Theodore Joseph O'Brien is an attorney registered with Office of Attorney Regulation Counsel of the Colorado Supreme Court, admitted in June 12, 2025. The current status is ACTV – Active. The firm name is United States Attorney's Office. The business address is 1801 California Street, Denver, CO 80202.
| Registration Bar Number | 61623 |
| Full Name | Theodore Joseph O'Brien |
| First Name | Theodore Joseph |
| Last Name | O'Brien |
| Firm Name | United States Attorney's Office |
| Address | 1801 California Street Denver CO 80202 |
| Telephone | (303) 454-0106 |
| License Status | ACTV – Active |
| Admission Date | 2025-06-12 |
| Private Practice | Yes |
| Professional Liability Insurance | Yes |
| Disciplinary History | No public disciplinary history on file |
| Firm Name | United States Attorney's Office |
| Address | 1801 California Street Denver CO 80202 |
| Telephone | (303) 454-0106 |
| Attorney Name | Firm Name | Address | Admission Date |
|---|---|---|---|
| Lucas Barton Elek | United States Attorney's Office | 1801 California St, #1600, Denver, CO 80202 | 2024-10-21 |
| Street Address |
1801 California Street |
| City | Denver |
| State | CO |
| Zip Code | 80202 |
| Attorney Name | Firm Name | Address | Admission Date |
|---|---|---|---|
| Alana Lynn LeFebvre | Merchant & Gould P.C. | 1801 California Street, Suite 3300, Denver, CO 80202 | 2023-10-30 |
| Joseph Devoy Dubuque | Holland & Knight LLP | 1801 California Street, 5000, Denver, CO 80202 | 2023-07-20 |
| Tyler Christopher Shockley | Gibson Dunn & Crutcher | 1801 California Street, #4200, Denver, CO 80202 | 2023-10-30 |
| Sarah Sullivan McLoughlin | Williams Weese Pepple Ferguson | 1801 California Street, Suite 3400, Denver, CO 80202 | 2022-10-31 |
| Dustin Taylor Andre-Vandenberg | US Attorney's Office | 1801 California Street, #1600, Denver, CO 80202 | 2023-01-26 |
| Mason George Stringer | Gibson, Dunn & Crutcher | 1801 California Street, Denver, CO 80202 | 2024-10-21 |
| Jessica Elizabeth Swank | Evolve Vacation Rental Network, Inc | 1801 California Street, Suite 4700, Denver, CO 80202 | 2025-07-10 |
| Jens Douglas Niederreiter | Butler Snow LLP | 1801 California Street, Suite 5100, Denver, CO 80202 | 2025-10-27 |
| Sylwia H. Osiecka | Fairfield and Woods, P.C. | 1801 California Street, Suite 2600, Denver, CO 80202 | 2024-10-24 |
| Diego Villarreal | Holland Knight LLP | 1801 California Street, Suite 5000, Denver, CO 80202 | 2022-10-31 |
| Find all attorneys in the same location | |||
| Attorney Name | Firm Name | Address | Admission Date |
|---|---|---|---|
| John Aaron Brice | Sheridan Ross P.C. | 1560 Broadway, Suite 1200, Denver, CO 80202 | 2025-10-27 |
| Alfonso Kane Wheeler | Hall and Evans | 1001 17th Street, Suite 300, Denver, CO 80202 | 2025-10-27 |
| Cody Michael Bernheisel | PricewaterhouseCoopers | 1900 16th St Mall #1600, Denver, CO 80202 | 2025-11-06 |
| Eric Robert Helfrich | Beatty & Wozniak, P.C. | 1675 Broadway, #600, Denver, CO 80202 | 2025-10-30 |
| Jarissa R. Sabal | Taft Stettinius & Hollister LLP | 675 Fifteenth Street, Suite 2300, Denver, CO 80202 | 2025-10-30 |
| Joe Henry Legan | Wheeler, Trigg, O'Donnell LLP | 370 17th Street, Suite 4500, Denver, CO 80202 | 2025-10-27 |
| Timothy Dale Dwyer | Holland & Hart | 555 17th St UNIT 3200, Denver, CO 80202 | 2025-10-27 |
| Briana Seyarto Flores | Brownstein Hyatt Farber Schreck LLP | 675 15th Street, Suite 2900, Denver, CO 80202 | 2025-10-30 |
| Tristan Texas Verghese | Faegre Drinker | 1144 15th St., Unit 3400, Denver, CO 80202 | 2025-10-27 |
| Liana Joy Brown | Fisher & Phillips LLP | 1125 17th Street, Suite 2400, Denver, CO 80202 | 2025-10-27 |
| Find all attorneys in the same zip code | |||
| Attorney Name | Firm Name | Address | Admission Date |
|---|---|---|---|
| Sean Joseph O'Brien | Dworkin Chambers Williams York Benson Evans P.C. | 3900 E. Mexico Avenue Suite 1300, Denver, CO 80210 | 2016-10-31 |
| Theodore Joseph Finn | Flanders Elsberg Herber Dunn LLC | 401 Main Street, Ste. 1, Longmont, CO 80501 | 2003-10-20 |
| Theodore Joseph Krapin | Larson Financial | 10170 Church Ranch Way, Ste. 450, Westminster, CO 80021 | 2015-11-09 |
| Leo K O'Brien | Leo K O'Brien PC | 76 S Sierra Madre Suite 211, Colorado Springs, CO 80903-3383 | 1964-04-22 |
| Daniel J O'Brien | Daniel J Obrien Co Lpa | 131 N Ludlow St. Ste. 1210, Dayton, OH 45402-1155 | 1963-09-17 |
| John Joseph O'Brien | Armstrong Teasdale LLP | 4643 South Ulster Street Suite 800, Denver, CO 80237 | 2024-03-07 |
| Daniel Joseph O'Brien | Daniel Obrien | 21911 E Ridge Trail Cir, Aurora, CO 80016 | 1993-10-21 |
| Michael M O'Brien | Kraemer Golden Obrien LLC | 2850 McClelland Drive, Ste. 3100, Fort Collins, CO 80525 | 1994-06-06 |
| Michael A. O'Brien | Obrien Law Offices P.C. | 124 A South County Farm Rd., Wheaton, IL 60187 | 2007-10-23 |
| Bradley J. O'Brien | OBrien Legal Services LLC | 3900 E. Mexico Avenue, Suite 300, Denver, CO 80210 | 2007-10-22 |
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This dataset includes over 50 thousands attorneys registered with the Office of Attorney Regulation Counsel of the Colorado Supreme Court. Every attorney admitted to practice in Colorado must file a registration statement and pay a fee as set by the Colorado Supreme Court. Each attorney is registered with name, business address, contact information, etc.
| Subject | Transparency and Disclosure |
| Jurisdiction | State of Colorado |
| Data Provider | Office of Attorney Regulation Counsel of the Colorado Supreme Court |
| Source | data.colorado.gov |
The Office of Attorney Regulation Counsel's duties involve assisting the Colorado Supreme Court in regulating all phases of the practice of law in Colorado. The Office of Attorney Regulation Counsel administers the bar examination, screens each applicant's character and fitness to practice law in Colorado, and enforces all other attorney admission and annual registration functions. The office educates the general public and the legal profession on the underlying duties and requirements contained in the Colorado Rules of Professional Conduct. The office enforces the Colorado rules regarding attorney discipline and disability proceedings and mandatory continuing legal and judicial education. Every attorney admitted to practice in Colorado (including judges, inactive attorneys and those admitted to practice under a limited license or authority) must file a registration statement and pay a fee as set by the Colorado Supreme Court. To be admitted to practice law in Colorado, the requirements and procedures vary depending on whether the applicant is a recent law school graduate, seasoned attorney, took the bar examination in another UBE state, or want to practice in Colorado on a temporary basis. This dataset includes all registered attorneys admitted in Colorado, whether they are resident or non-resident, active or retired, or practicing law in Colorado or anywhere else. The disclosed information for each attorney includes Registration Bar Number, First Name, Middle Name, Last Name, Firm Name, License Status, Admission Date, Private Practice, Professional Liability Insurance, Telephone Number, Fax Number, Street Address, City, State, Zip, and Disciplinary History. The Colorado Information Marketplace (CIM) is the central online home for state open data, giving the public greater access to public data and increasing transparency in government operations. By opening up public data, Colorado is providing fuel for entrepreneurs, researchers, and citizens to build innovative solutions and create insights. |