United States National Library of Medicine

United States National Library of Medicine

The United States National Library of Medicine, operated by the United States federal government, is the world's largest medical library. Located in Bethesda, Maryland, the NLM is an institute within the National Institutes of Health. Derived from Wikipedia licensed CC-BY-SA.

Open Access statistics for United States National Library of Medicine, United States, covering academic research published from 2000 to 2024. Read More.


Open Access Percentage

75%


Total
Publications

5.7K


Total Open
Publications

4.3K


Total
Citations

594K


Open Access
Percentage

75%


Total
Publications

5.7K


Total Open
Publications

4.3K


Total
Citations

594K

Wikipedia

Website

download

Breakdown

16% 44% 13% 27%

Publisher Open

16%

Both

44%

Other Platform Open

13%

Closed

27%

Percentage of Open Access over time

0%10%20%30%40%50%60%70%80%90%100%
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024

Publisher Open

Both

Other Platform Open

Closed

Volume of Open Access over time

050100150200250300350400Total Publications
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024

Open

Closed

Publisher Open

57%OA Journal

OA Journal 57%

1.8K

Hybrid 25%

764

No Guarantees 18%

559

Other Platform Open

Domain 76%

2.3K

Other Internet 24%

740

Institution 21%

644

Public 4%

130

Preprint 3%

89

Other Platform Locations

Name

Platform Type

Publications

PubMed Central
Domain
2.3K
DOI
Other Internet
658
Europe PMC
Domain
170
U.S. Department of Energy Office of Scientific and Technical Information - OSTI OAI
Institution
119
Unknown Repository
Other Internet
111
Le Centre pour la Communication Scientifique Directe - HAL - Diderot
Institution
109
Figshare
Public
106
DANS - Data Archiving and Networked Services
Institution
83
arXiv
Preprint
83
Spanish National Research Council (CSIC - DIGITAL.CSIC)
Institution
34
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Data updated 18 August 2025

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