MDCalc is the most trusted medical reference for clinical decision tools and content.

MDCalc is used by millions of clinicians around the world, including more than 80% of the clinicians in the United States alone. MDCalc is consistently rated as one of the most useful medical platforms for healthcare professionals in their daily workflow.

User-Friendly Tools

MDCalc is committed to providing a curated selection of evidence-based tools that pass our rigorous criteria in three different categories:

Evidence

the quality and quantity of the data behind the tool, including the level of independent validation

Utility

how useful the result is clinically, how easy the tool is to use at the bedside and the frequency of the condition

Popularity

how many users request the tool and how frequently the tool is used

Expert Content

MDCalc thoughtfully curates each clinical decision support tool to guide and educate clinicians through practical thought processes such as:

1. When the calculator should be used

2. What clinicians should be aware of when using this clinical decision support tool.

3. What the next steps are for patient care

4. What the formula is behind the score and the references that support this research

Creator Insights

MDCalc partners with clinical support tool creators to share their inspiration behind the creation, and how the tool can be useful and more.

For example, check out the comments on the Wells’ Criteria for PE by Dr. Phil Wells.

Sign up for a MDCalc account to unlock a personalized experience.

Access the newest features, save your favorite calcs, explore specialized tools, and revisit recent pages effortlessly. Sync your personalized settings across devices for a fast, seamless experience tailored to how you use MDCalc best.

MDCalc Story

Since 2005, MDCalc has been an essential part of the clinician’s workflow to help achieve better patient outcomes. MDCalc’s evidence-based tools and content written by physician experts support 50+ specialties and cover 200+ patient conditions. MDCalc has a global presence, with users in over 200 countries and territories, with especially strong use in regions and medical centers focused on patient-centered and practice changing evidence-based medicine.

MDCalc’s founders are two practicing emergency medicine physicians: Dr. Graham Walker and Dr. Joseph Habboushe.

With the help of some of the most incredible clinicians, researchers, and medical societies, MDCalc has experienced rapid organic growth to become the most broadly used medical reference for clinical decision tools and content, trusted by millions of healthcare professionals globally.

Joseph Habboushe, MD, MBA

Joseph Habboushe, MD, MBA, is the CEO and co-founder of MDCalc. Joe is a 7th generation physician. He specializes in emergency medicine, is an Associate Professor at Weill Cornell Medicine in New York City - and is the creator and editor-in-chief of EMRA's pocket guide series, The Basics of Emergency Medicine. Joe received an MD from Weill Medical College of Cornell University, an MBA in Healthcare Finance from Columbia University, and a BS in Applied Mathematics from Yale University. He trained in emergency medicine at St. Luke's-Roosevelt Hospital, where he met Graham.

Graham Walker, MD

Graham Walker, MD is the co-founder of MDCalc. Graham practices emergency medicine in San Francisco, and focuses on clinical informatics and now AI in medicine. Through MDCalc, Graham created, edited, and co-authored the Physicians' Charter for Responsible AI, a practical guide for how AI should be adopted in medical care. Graham attended medical school at the Stanford University School of Medicine and then moved to New York City, where he trained in emergency medicine at St. Luke's-Roosevelt Hospital Center and served as Chief Resident.

MDCalc's Testimonials

Hear first-hand accounts of how MDCalc is revolutionizing evidence-based medicine and enhancing patient care.

“Absolute must have on the wards”
Medical scores are very difficult to keep memorized completely when starting off in medicine. This is a great resource to have on the wards. Easy to use and a great way to improve patient care and improve diagnostic ability.
“Speaks for itself!”
Nearly flawless. One of my fav apps. Wear their badge reel all the time. A+ 10/10 couldn’t say enough good things about this app. The evidence section is superb.
“Love it!”
This is such a great app. It has every decision-making calculator possible, and the best part is you can save your favorite / most commonly used clinical calculators to quickly access them.
“Excellent”
I really liked their layout and their explanation of the importance of a given calculator with links to reference articles.
“A Must Have App for Doctors!”
This app puts evidence-based medicine at the fingertips to every doctor in the world! The most up-to-date doctors use this app daily… this is a must have app!
“It’s the best!”
Long time user. I used to have a ton of medical calculator apps on my phone. They’ve all been deleted except for this one.
“Absolute must have on the wards”
Medical scores are very difficult to keep memorized completely when starting off in medicine. This is a great resource to have on the wards. Easy to use and a great way to improve patient care and improve diagnostic ability.
“Speaks for itself!”
Nearly flawless. One of my fav apps. Wear their badge reel all the time. A+ 10/10 couldn’t say enough good things about this app. The evidence section is superb.

The MDCalc Community

Meet the dynamic community driving MDCalc's innovation – including dedicated clinicians using MDCalc's evidence-based tools to enhance patient care, invaluable contributors and editors, esteemed members of the Scientific Advisory Board, and collaborative partners within leading medical societies.

MDCalc Users

A wide variety of healthcare professionals including physicians, pharmacists, physician's assistants, nurses, etc - who are dedicated to improving patient care through evidence-based medicine.

MDCalc is sustained by the active involvement of healthcare professionals who contribute as content creators, contributors, editors, usability testers, and more.

MDCalc operates as a user-centric platform, designed by healthcare professionals for healthcare professionals.

Scientific Advisory Board

Elite leaders in academic evidenced-based medicine and clinical decision support.

These pioneers of medicine have changed practice with their research and clinical work, improving care and outcomes for countless patients worldwide.

Board members provide strategic guidance that helps to shape MDCalc's strategy and vision, on an invitation-only, voluntary basis.

See MDCalc Community

Contributors & Collaborators

MDCalc partners with the most esteemed research teams, medical societies, associations and creators to ensure that MDCalc is always at the forefront of innovation.

View Collaborators

Have questions?

Connect with the MDCalc Team

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