Tiber Creek Group

Tiber Creek Group
Type	Government relations firm
Headquarters	Washington, DC, United States
Website	https://www.tibercreekgroup.com/

Tiber Creek Group, formerly known as Peck Madigan Jones, is a bipartisan government relations firm based in Washington, DC. The firm represents entities from Fortune 100 companies such as Nvidia and Microsoft to advocacy groups such as the US Chamber of Commerce and PhRMA. ^[1] The firm re-branded from Peck Madigan Jones in 2021. ^[2]

History

Tiber Creek Group was founded as Griffin, Johnson & Associates in 1987 by Pat Griffin, former aide to West Virginia Democratic Senator Robert Byrd, and David Johnson, former aide to Maine Democratic Senators Edmund Muskie and George J. Mitchell.^[3] The additions of Republicans Peter Madigan, Michael Boland, and Janet Mullins Grissom in the early 2000s added bipartisan capabilities to Griffin, Johnson & Associates.^[4] At the same time, the firm also brought in Democratic operatives Harold M. Ickes and Janice Enright. Changes to the firm’s senior leadership, such as the addition of Jonathon Jones, caused Griffin, Johnson & Associates to change names multiple times. In 2021, Griffin, Johnson & Associates, then known as Peck Madigan Jones, re-branded to Tiber Creek Group. Tiber Creek also owns the Ickes and Enright Group, which was co-founded by former Clinton White House Deputy Chief of Staff Harold Ickes in 1997 ^[5] Jonathon Jones serves as managing partner of Tiber Creek Group. ^[6]

Clients

Healthcare

Acadia Pharmaceuticals ^[7]
American Society of Clinical Oncology ^[8]
Amgen ^[9]
AstraZeneca ^[10]
Biotechnology Innovation Organization ^[11]
BeiGene ^[12]
Cigna ^[13]
Eli Lilly ^[14]
Genentech ^[15]
HealthPartners ^[16]
Jazz Pharmaceuticals ^[17]
Merck & Co. ^[18]
Myriad Genetics ^[19]
Northwell Health ^[20]
PhRMA^[21]
Takeda Pharmaceuticals ^[22]

Financial Services

Technology

Information Technology Industry Council ^[31]
JMA Wireless ^[32]
Microsoft ^[33]
Nvidia ^[34]
Qualcomm ^[35]
SAP ^[36]

Environment and Sustainability

Bloom Energy ^[37]
Breakthrough Energy ^[38]
Carbon Removal Alliance ^[39]
Climate Action Campaign ^[40]
Environmental Defense Fund ^[41]

Charities and NGOs

Aviation

Airbus Group ^[45]

Awards

Tiber Creek was named as a Top-Performing lobbying firm by Bloomberg Government in 2020, 2022 and 2024. ^[46] ^[47] ^[48]

References

^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Frates, Chris (January 4, 2011). "Top PhRMA lobbyist starts new firm". Politico. Retrieved July 8, 2025.
^ Palmer, Anna (March 27, 2009). "Jones-ing for Partner". Roll Call. Retrieved June 27, 2025.
^ Palmer, Anna (March 27, 2009). "Jones-ing for Partner". Roll Call. Retrieved July 8, 2025.
^ Moore, David (February 28, 2020). "Corporate Lobbyists Control the Rules at the DNC". Sludge.
^ "J. Jonathon Jones". Tiber Creek Group.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Wilson, Megan (October 17, 2016). "Peck Madigan Jones hires Obama, Clinton White House alum". The Hill.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Gangitano, Alex (December 28, 2020). "Bottom line".
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Meyer, Theodordic (January 22, 2020). "Boom times for K Street's biggest firms". POLITICO. Retrieved June 15, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved June 2, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Opryski, Caitlin (June 28, 2021). "Mastercard resumes antitrust lobbying". POLITICO.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Burns, Tobias; Giorno, Taylor (October 21, 2023). "Banking lobbyists, lawmakers gear up for a fight over new exec pay bill spurred by crisis". The Hill. Retrieved July 8, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.
^ Evers-Hillstrom, Karl (December 13, 2022). "Bottom Line". The Hill. Retrieved July 8, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ Schwartz, Brian (December 7, 2021). "Anti-Trump group led by Bill Kristol hires lobbyists to push presidential power reform". CNBC.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.
^ "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved May 30, 2025.
^ "2020 Top-Performing Lobbying Firms" (PDF). Bloomberg Government.
^ "2022 Top-Performing Lobbying Firms" (PDF). Bloomberg Government.
^ "9th Annual Top-Performing Lobbying Firms Report" (PDF). Bloomberg Government.

[1] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[2] Frates, Chris (January 4, 2011). "Top PhRMA lobbyist starts new firm". Politico. Retrieved July 8, 2025.

[3] Palmer, Anna (March 27, 2009). "Jones-ing for Partner". Roll Call. Retrieved June 27, 2025.

[4] Palmer, Anna (March 27, 2009). "Jones-ing for Partner". Roll Call. Retrieved July 8, 2025.

[5] Moore, David (February 28, 2020). "Corporate Lobbyists Control the Rules at the DNC". Sludge.

[6] "J. Jonathon Jones". Tiber Creek Group.

[7] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[8] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[9] Wilson, Megan (October 17, 2016). "Peck Madigan Jones hires Obama, Clinton White House alum". The Hill.

[10] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.

[11] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[12] Gangitano, Alex (December 28, 2020). "Bottom line".

[13] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[14] Meyer, Theodordic (January 22, 2020). "Boom times for K Street's biggest firms". POLITICO. Retrieved June 15, 2025.

[15] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.

[16] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[17] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[18] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.

[19] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[20] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[21] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[22] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[23] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved June 2, 2025.

[24] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[25] Opryski, Caitlin (June 28, 2021). "Mastercard resumes antitrust lobbying". POLITICO.

[26] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[27] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[28] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[29] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[30] Burns, Tobias; Giorno, Taylor (October 21, 2023). "Banking lobbyists, lawmakers gear up for a fight over new exec pay bill spurred by crisis". The Hill. Retrieved July 8, 2025.

[31] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[32] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[33] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.

[34] Evers-Hillstrom, Karl (December 13, 2022). "Bottom Line". The Hill. Retrieved July 8, 2025.

[35] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[36] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[37] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[38] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[39] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[40] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[41] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[42] Schwartz, Brian (December 7, 2021). "Anti-Trump group led by Bill Kristol hires lobbyists to push presidential power reform". CNBC.

[43] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved July 8, 2025.

[44] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved August 5, 2025.

[45] "Lobbying Firm Profile: Tiber Creek Group". Open Secrets. Retrieved May 30, 2025.

[46] "2020 Top-Performing Lobbying Firms" (PDF). Bloomberg Government.

[47] "2022 Top-Performing Lobbying Firms" (PDF). Bloomberg Government.

[48] "9th Annual Top-Performing Lobbying Firms Report" (PDF). Bloomberg Government.

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