Philip Seo, MD, Named Editor-in-Chief of The Merck Manuals

RAHWAY, N.J., Nov. 10, 2026 /PRNewswire/ -- Merck Manuals, a comprehensive digital health resource, announced today that Philip Seo, MD, has been named Editor-in-Chief. In this role, Dr. Seo will lead the next chapter of this long-trusted medical resource and its continually expanding collection of online assets for both healthcare professionals and patients.

"For more than a century, The Merck Manuals has empowered patients and professionals alike to make more informed medical decisions," said Philip Seo, MD. "That legacy remains as important as ever today, and I look forward to working with the entire Merck Manuals team to ensure we continue to deliver trusted medical information around the globe."

In addition to his role as Editor-in-Chief at The Manuals, Dr. Seo is an Associate Professor of Medicine at Johns Hopkins University and an Adjunct Professor of Medicine at the University of Maryland. He previously served as Director of the Johns Hopkins Vasculitis Center and Director of the Johns Hopkins Rheumatology Fellowship Training Program. He was also a Physician Editor of The Rheumatologist, an official publication of the American College of Rheumatology (ACR).

Dr. Seo received the ACR's Distinguished Clinical Scholar Award in 2021. The award is given annually to a rheumatologist who makes outstanding contributions in clinical medicine, clinical scholarship, or education. In 2024, he received the ACR's Distinguished Service Award for outstanding service to the organization.

Dr. Seo is an internationally recognized educator in systemic vasculitides and a regular speaker at the largest rheumatology conferences in the United States. He completed his medical degree at Columbia University and his undergraduate studies at Harvard University.

The Merck Manuals continues to expand its resources on its websites and mobile apps, including videos, podcasts, infographics, and interactive 3D models designed for medical professionals, students, veterinarians, and the general public.

Provided as a public service by Merck & Co., Inc., access to the website is unlimited and always free. There is no registration and visitors are never asked to provide personal information. The user experience is not compromised by advertising or sponsored content of any kind.

First published in 1899 as a pocket-sized reference for physicians and pharmacists, The Merck Manual has evolved into one of the world's most trusted and widely-used medical resources. Today, it serves professionals and consumers alike with expert-authored, regularly updated medical content. Available in 16 languages and reaching nearly 250 countries, The Manuals offer far more than text. The website and mobile apps feature an ever-growing collection of videos, podcasts, infographics, and interactive 3D models designed for medical professionals, students, veterinarians, and curious consumers. For over a century, The Merck Manual has been fully committed to making reliable medical knowledge accessible to everyone, everywhere. Access The Manuals online in the United States and Canada at MerckManuals.com, and worldwide at MSDManuals.com.

At Merck, known as MSD outside of the United States and Canada, we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals. We foster a diverse and inclusive global workforce and operate responsibly every day to enable a safe, sustainable and healthy future for all people and communities. For more information, visit www.merck.com and connect with us on X (formerly Twitter), Facebook, Instagram, YouTube and LinkedIn.