10 Merck marketing leaders
Ryan Monahan, Executive Director, US Oncology Marketing - Sac-TMT MK-2870 at Merck, is one of ten Merck marketing leaders listed here, alongside people who hold executive director and director roles in consumer, US and global marketing. A reader can learn how marketing leaders work at Merck from people who have held the role.
Professionals to explore
Alexis Stinson, PharmD
LinkedInExperience: Director, US Oncology New Products Marketing · Merck
Alexis Stinson has been Director, US Oncology New Products Marketing at Merck since July 2026. At Merck, Alexis Stinson was Associate Director, Oncology Marketing (HCP Strategy Lead, Alliance Manager, and Product Owner) from 2024 to 2026 and Associate Director, Hematology-Oncology Marketing (Commercial Scientific Strategy Lead) from 2022 to 2024.
Elissa Sherman
LinkedInExperience: Director US Marketing, Product Marketing Owner Consumer and Allied Professional Team Lead for HIV · Merck
Elissa Sherman has been Director US Marketing, Product Marketing Owner Consumer and Allied Professional Team Lead for HIV at Merck since October 2025. At Merck, Elissa Sherman was Director, Global Marketing, New Products, Adult Pneumococcal Vaccines from 2023 to 2025 and Associate Director, Consumer Marketing from 2018 to 2021.
Emmanuel C. Abolo, PharmD.
LinkedInExperience: Director, US Marketing, Adult Pneumococcal Vaccines · Merck
Emmanuel C. Abolo has been Director, US Marketing, Adult Pneumococcal Vaccines at Merck since March 2026. At Merck, Emmanuel C. Abolo was US Brand Lead, Rotavirus and Hep A vaccines from 2024 to 2026 and Associate Director, Global Marketing, Pneumococcal Vaccine from 2021 to 2023, and was Sr. Manager, Oncology Marketing (Multiple Myeloma) at GSK from 2020 to 2021.
Erica Carestio
LinkedInExperience: Director Influenza Prevention Global Marketing, MK-1406 · Merck
Erica Carestio has been Director Influenza Prevention Global Marketing, MK-1406 at Merck since June 2026. At Merck, Erica Carestio was Director Global Oncology, Portfolio Promotion from 2024 to 2026, Director, Oncology Global Brand Strategy, KEYTRUDA from 2022 to 2023 and Associate Director, Multichannel Integration & Customer Engagement, KEYTRUDA from 2018 to 2020.
Liv Wu
LinkedInExperience: Director, Consumer Marketing - Immunology · Merck
Liv Wu has been Director, Consumer Marketing - Immunology at Merck since July 2025. At Merck, Liv Wu was Associate Director, Product Owner & HCP HCC Marketing Strategy Lead - COVID from 2024 to 2025 and Associate Director, Consumer Marketing - INSOMNIA from 2022 to 2023, and was Senior Brand Manager - Airborne at Reckitt in 2022.
Michelle Horne
LinkedInExperience: Global Marketing Director, Oncology · Merck
Michelle Horne has been Global Marketing Director, Oncology at Merck since July 2025. At Merck, Michelle Horne was Director, Global Brand Strategy from 2021 to 2025, Associate Director Oncology Marketing from 2015 to 2021 and Customer Team Leader from 2008 to 2015.
Nancy P.
LinkedInExperience: Director, Consumer Marketing · Merck
Nancy P. has been Director, Consumer Marketing at Merck since November 2022. Nancy P. was Director, Digital Health and Customer Experience at Bristol Myers Squibb from 2016 to 2022 and Director - Global eInnovation for Celgene, A Bristol Myers Squibb Company at Celgene from 2013 to 2016, and was Associate Director, Aubagio Genzyme (a Sanofi Company) at Sanofi from 2011 to 2013.
Niamh Cinquina
LinkedInExperience: Executive Director Global Marketing, Prostate Cancer Global Brand Lead · Merck
Niamh Cinquina has been Executive Director Global Marketing, Prostate Cancer Global Brand Lead at Merck since February 2024. At Merck, Niamh Cinquina was US Oncology Marketing Lead, Prostate, Lynparza from 2021 to 2024, Director US Oncology Marketing, Diagnostics, Lynparza from 2020 to 2021 and Director Global Oncology Marketing, Keytruda Lung Team from 2018 to 2020.
Ryan Monahan
LinkedInExperience: Executive Director, US Oncology Marketing - Sac-TMT MK-2870 · Merck
Ryan Monahan has been Executive Director, US Oncology Marketing - Sac-TMT MK-2870 at Merck since April 2026, based in Upper Gwynedd, Pennsylvania. At Merck, Ryan Monahan was Executive Director, US Oncology Marketing - Skin Cancers from 2024 to 2026, Director, Global Oncology Marketing & Operations from 2023 to 2024 and US Market Leader, Director, Antibiotics from 2021 to 2023.
Timothy Wascavage
LinkedInExperience: Executive Director, Marketing Leader, HPV Franchise, U.S. Vaccines · Merck
Timothy Wascavage has been Executive Director, Marketing Leader, HPV Franchise, U.S. Vaccines at Merck since August 2023. At Merck, Timothy Wascavage was Director, U.S. Marketing Leader, HPV Franchise, Vaccines from 2022 to 2023 and Associate Director of Marketing, Strategy Lead - HPV Franchise, U.S. Vaccines from 2021 to 2022.
Choose the right perspective
Pick the person whose marketing scope is closest to your question, since consumer marketing, US brand marketing, global brand strategy and new product marketing involve different decisions. Check the start date of each role to see how recent the experience is.
Questions to take into the conversation
- 01What did you focus on first when you took on your current marketing role?
- 02How do you split your planning between patient-facing and physician-facing marketing?
- 03What has your own work taught you about preparing a brand for a new product launch?
Reaching Merck marketing leaders
How can I contact one of these Merck marketing leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 1 company: Merck, based on profile data retrieved on October 19, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach Merck marketing leaders?
You choose the offer, starting at $5 per person. The offer is what the person receives, and Instant Expert's fee is added on top, so a $100 offer costs you $125. The fee is 20% of what you pay. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
Can an AI agent ask one of these Merck marketing leaders a question?
Yes. An agent with a USDC wallet on Base can ask one question without an Instant Expert account. It names the person, for example by the LinkedIn URL on this page, and pays per ask over x402 (HTTP 402). The person answers in writing or by voice note, and if nobody answers within 7 days, the payment goes back to the wallet automatically. Claude and ChatGPT can do the same through the Instant Expert connector: setup is at /docs/mcp for Claude and /docs/chatgpt for ChatGPT. x402 docs
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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