Key Opinion Leaders vs Digital Opinion Leaders in pharma

Nearly five years ago, I wrote about the differences between Key Opinion Leaders (KOLs) and Digital Opinion Leaders (DOLs). Since then, this article has remained one of our most-read pieces – proof that the question of what truly defines a DOL and their differentiation from KOLs continues to spark debate.

Fast forward to 2025, and the DOL profiling landscape has become far more crowded and complex. As more companies enter the space, the definition of a Digital Opinion Leader is being blurred – with some providers simply packaging online KOL mapping under the DOL banner. While valuable in its own right, this is not the same thing. The result? Teams believing they have DOLs mapped when they might have missed those DOLs who are beyond traditional KOLs.

The differences between KOLs and DOLs

Key Opinion Leaders usually earn their influence through decades of clinical experience and recognition within their field. They often hold senior positions, reflecting years of expertise, and are typically older as a result. Their influence is rooted in traditional channels such as academic publications, conferences, and mainstream media.

In contrast, a Digital Opinion Leader builds influence primarily through their online presence. This path can be much faster, allowing someone in a junior role – even early in their career – to become highly impactful within digital HCP communities. Unlike traditional KOLs, DOLs don’t necessarily hold senior titles; we often see nurses, junior doctors, or other non-traditional roles shaping conversations and guiding peers online in ways that rarely happen in offline settings. While some DOLs may also be KOLs, many are not and that distinction matters.

Nurse Maggie Simpson ranks 24th on the list HCPs DOLs in the area of heart failure according to DOL Finder.

What defines their importance isn’t seniority, but impact. Even without decades of experience or a conventional KOL profile, if these HCPs are influencing the audiences you need to reach, they are critical voices to understand, engage, and build relationships with.

DOL collaboration

Healthcare professionals build their online presence for many reasons. Being part of a digital community helps them learn, collaborate with peers, and – for some – engage more effectively with patients. From our decade of studying, interviewing and engaging with DOLs, one thing is clear: their motivation is rarely financial. Unlike traditional influencer models in other industries, the DOL model is not about paid promotion. Understanding why a DOL is online is critical, as it shapes how you should approach collaboration.

Working with DOLs requires a different mindset than traditional KOL engagement. It’s less about monetary transactions and more about a genuine exchange of value and influence. Examples of value you can offer include:

• Raising the DOL’s profile and visibility
• Giving access to new platforms or tools for engagement
• Sharing unique knowledge or insights
• Helping them upskill in digital engagement
• Supporting them in a mutual cause they are passionate about

What DOLs offer pharma over traditional KOLs

There are many reasons why pharma teams may choose to engage Digital Opinion Leaders alongside or instead of traditional KOLs. Some common scenarios include:

• Expanding beyond existing networks: You’ve been established in a therapy area for years with long-standing KOL partnerships, but now want to identify fresh collaboration opportunities with other influential HCPs.
• Breaking into competitive spaces: Traditional KOLs may already be aligned with competitors. Rising-star DOLs offer new voices not yet tied to other pharma companies.
• Driving digital campaigns: If your strategy requires strong online engagement, traditional KOLs with little digital presence may not be effective partners.
• Amplifying congress impact: By involving DOLs in congress presentations, data can reach not only the audience in the room but also a wider digital community through their online influence.
• Reaching HCPs differently: In an environment where field forces are shrinking, collaborating with DOLs provides a new, digital-first way to connect with HCPs at scale.

What Does Success Look Like?

We’ve seen first-hand the impact of effective DOL collaboration.

One client wanted to expand the reach of new data among specialist HCPs. After identifying and engaging the right DOLs, two were invited to a congress symposium. Their online posts generated over 800,000 impressions, reaching almost 40,000 HCPs, including thousands of relevant specialists.

In another case, a client set out to educate HCPs and raise disease awareness. By involving carefully selected DOLs in a live Twitter Chat, the campaign drove exceptional engagement: the hashtag became the most used in the medical science community that day, with 5.6 million impressions.

These examples show how, by partnering with the right DOLs for the right initiatives, you can amplify reach, spark meaningful engagement, and achieve measurable results.

Want to learn more?
Register for our upcoming webinar: The Advanced Guide to DOLs
Sign up to a demo of our DOL Finder 2.0 platform
Email me at [email protected] to explore how we could help with your DOL needs.