Dosimetrist Career Guide: Role, Salary, Education, and How to Get Started
11 Apr, 2026
If you've been exploring niche career paths in the healthcare industry, you may have encountered the abbreviation M.S.L. — the Master of Science in Library Science (sometimes also referred to as a Master of Science in Library and Information Science, or MSLIS). While this degree might not be the first thing that comes to mind when you think of healthcare careers, I can tell you from years of experience working with healthcare professionals on our platform that the M.S.L. opens doors to one of the most intellectually rewarding and critically important roles in modern medicine: the medical librarian.
At healthcareers.app, we built our job board to highlight every meaningful career pathway in health — not just the ones that make headlines. The M.S.L. is a perfect example. Medical librarians and health information specialists form the backbone of evidence-based practice, clinical decision-making, and biomedical research. They are essential members of the allied health workforce, and their expertise is more in demand than ever as the volume of medical literature continues to explode.
In this comprehensive guide, I'll walk you through everything you need to know about pursuing an M.S.L. degree, building a career as a medical librarian, understanding salary expectations, and positioning yourself for success in this unique corner of allied health.
The M.S.L. is a graduate-level degree typically requiring 36 to 48 credit hours. Core coursework generally includes:
Many M.S.L. programs now offer concentrations in health informatics, health sciences librarianship, or data science — all of which are directly applicable to healthcare settings.
When selecting an M.S.L. program, I always advise candidates to verify that the program is accredited by the American Library Association (ALA). ALA accreditation is the gold standard for library science education in the United States, and most employers — especially hospitals, academic medical centers, and government agencies — require or strongly prefer graduates of ALA-accredited programs. According to the American Library Association, there are currently over 60 ALA-accredited master's programs across the U.S. and Canada.
One of the great advantages of the M.S.L. is flexibility. Many top programs, including those at the University of Illinois Urbana-Champaign, the University of North Carolina at Chapel Hill, and San José State University, offer fully online M.S.L. degrees. This means you can pursue the degree while continuing to work, which is especially helpful if you're already employed in a healthcare or allied health setting and looking to advance.
Medical librarians — sometimes called health sciences librarians or clinical librarians — are specialized information professionals who work within healthcare environments. Their responsibilities go far beyond shelving books. Here's what a typical day might look like:
I've spoken with medical librarians who have described themselves as "translators" between the enormous world of biomedical literature and the busy clinicians who need that information in real time. It's a description I find incredibly accurate.
Medical librarians are found in a wide variety of healthcare and allied health settings:
The diversity of work environments is one of the things I love about this career path. Whether you thrive in an academic research setting or prefer the fast pace of a hospital, there's a place for M.S.L. graduates in healthcare.
According to the Bureau of Labor Statistics (bls.gov), the broader category of librarians and library media specialists is projected to grow by approximately 4% from 2022 to 2032, which is about as fast as the average for all occupations. However, I want to emphasize that demand within healthcare-specific library roles tends to be stronger than this general figure suggests. The increasing emphasis on evidence-based medicine, the proliferation of biomedical data, and the growing complexity of health information systems all drive sustained demand for medical librarians with M.S.L. credentials.
The Medical Library Association (MLA) has noted that healthcare organizations increasingly recognize the value of having trained information professionals embedded in clinical and research teams. As health data continues to grow exponentially — the National Institutes of Health (nih.gov) alone funds billions of dollars in research annually, all of which generates vast quantities of published literature and data — medical librarians become more essential, not less.
Salary varies based on geographic location, employer type, years of experience, and additional certifications. Here's what the data tells us:
When you factor in the relatively affordable cost of an M.S.L. degree (especially through online programs) and the strong benefits packages typically offered by hospitals and academic institutions, the return on investment for this career path is quite compelling.
You might be wondering: is a medical librarian really considered allied health? The answer is nuanced but important. Allied health is a broad umbrella term that encompasses healthcare professionals who are not physicians, nurses, or dentists but who play critical roles in patient care, diagnosis, and health system operations. While medical librarians don't provide direct clinical care, they directly support the professionals who do.
Organizations like the Association of Schools Advancing Health Professions (ASAHP) recognize that the allied health workforce includes professionals in health informatics and health information management — fields that overlap significantly with what M.S.L.-trained medical librarians do every day. At healthcareers.app, we categorize medical librarians within our allied health listings because their work is integral to the healthcare delivery ecosystem.
In our experience, healthcare employers increasingly value interdisciplinary team members who can bridge the gap between clinical practice and information science. If you hold an M.S.L. and work in a healthcare setting, you are very much a part of the allied health team.
The healthcare information landscape evolves rapidly, and staying current is non-negotiable for medical librarians. I recommend the following strategies:
Essentially, yes. The M.S.L. (Master of Science in Library Science), M.L.S. (Master of Library Science), and M.L.I.S. (Master of Library and Information Science) are functionally equivalent degrees. The specific title depends on the institution granting the degree. What matters most to employers is that the program is ALA-accredited. All three prepare you for the same career opportunities, including roles as medical librarians in healthcare settings.
Absolutely. While a background in science or health can be helpful, it is not required. Many successful medical librarians come from humanities, social sciences, or other backgrounds. Your M.S.L. program will teach you the information science skills you need, and you can learn medical terminology and health concepts through coursework, on-the-job training, and continuing education. What's most important is your passion for information, research, and supporting healthcare professionals.
Most M.S.L. programs take 1.5 to 2 years of full-time study to complete. Part-time students, especially those in online programs, may take 2.5 to 3 years. Some accelerated programs can be completed in as little as 12 months.
This is a question I hear often, and the short answer is no — but the role is evolving. While AI and advanced search tools are changing how information is retrieved, medical librarians bring critical thinking, contextual expertise, and the ability to evaluate the quality and relevance of information that technology alone cannot replicate. If anything, the complexity of modern health data and literature makes skilled information professionals more valuable. The key is to embrace technology as a tool and continue building skills in data science, informatics, and emerging AI applications.
While the Bureau of Labor Statistics does not break out medical librarians as a separate category, multiple professional organizations and workforce analyses suggest that demand in healthcare settings remains stable to growing. The expansion of evidence-based practice mandates, growing research output, and increased data governance requirements in healthcare all contribute to sustained demand for M.S.L.-credentialed professionals in this space.
The M.S.L. degree represents a unique and often overlooked pathway into meaningful healthcare work. Medical librarians are essential members of the allied health workforce, ensuring that clinicians, researchers, administrators, and patients have access to the accurate, timely, and evidence-based information they need. Whether you're a career changer looking for a way into healthcare, a current allied health professional seeking advancement, or a recent graduate passionate about the intersection of information science and medicine, the M.S.L. offers a rewarding, stable, and intellectually stimulating career.
At healthcareers.app, we're committed to helping you discover every career pathway in healthcare — including the ones that don't always get the spotlight. If you're considering an M.S.L., I encourage you to explore our job listings for medical librarian and health information specialist positions, and take the first step toward a career that truly makes a difference in how healthcare is practiced and delivered.
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