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Coverage and Prior Authorization Policies for Semaglutide and Tirzepatide in Medicare Part D Plans
Xiaoyu Liu, Chuan Angel Lu, Ya-Chen Tina Shih, Changchuan Jiang. JAMA Network Open, 2025-08-29
Topic: Risk, prevention and care in population studies
This cross-sectional study examines trends in coverage of glucagon-like peptide-1 receptor agonists, semaglutide and tirzepatide, and prior authorization requirements among Medicare Part D beneficiaries.
Key findings
- This cross-sectional study examines trends in coverage of glucagon-like peptide-1 receptor agonists, semaglutide and tirzepatide, and prior authorization requirements among Medicare Part D beneficiaries.
Why it matters
This study looked at how often Medicare Part D plans cover semaglutide and tirzepatide and what prior authorization rules they require. It provides no information on treating, curing or preventing Alzheimer's disease.
Study details
- Study designcross-sectional
- Evidence strengthLow
How this study scored 44/100
Published in a leading specialty journal, and it is a snapshot of people at one point in time. Scored zero for sample size, effect reported, studied in people and randomised / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 9 / 10 | Tier 2 — leading specialty journal (JAMA Network Open) |
| Journal's citation record | 2 / 4 | JAMA Network Open: journal h-index 235 (OpenAlex, 2026-10-29) |
| Study design | 4 / 12 | A snapshot of people at one point in time |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 4 / 5 | 2025 — within 3 year(s) of the newest study here |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 2 / 7 | Cited 9 times (OpenAlex, 2026-10-10) |
| Citations per year | 2 / 5 | 3.0 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 3 / 6 | Cited 5.5× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 0 / 6 | No other study in this library cites it |
| Still being cited | 1 / 4 | Cited 9 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 2 / 4 | Last-listed author Changchuan Jiang: h-index 21 (OpenAlex, whole career) |
| Institution's track record | 2 / 3 | University of California, Los Angeles: institution h-index 1,923 (OpenAlex) |
| Multi-centre collaboration | 1 / 3 | OpenAlex lists 3 institution(s) in 1 country |
| Indexed in PubMed | 1 / 2 | Not in PubMed, but has a DOI |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Total | 44 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.
APA 7th
Liu, X., Lu, C. A., Shih, Y.-C. T., & Jiang, C. (2025). Coverage and Prior Authorization Policies for Semaglutide and Tirzepatide in Medicare Part D Plans. JAMA Network Open. https://doi.org/10.1001/jamanetworkopen.2025.29842
Vancouver
Liu X, Lu CA, Shih Y.-CT, Jiang C. Coverage and Prior Authorization Policies for Semaglutide and Tirzepatide in Medicare Part D Plans. JAMA Network Open. 2025. doi:10.1001/jamanetworkopen.2025.29842.
BibTeX
@article{liu2025-bcf82ce4,
author = {Liu, Xiaoyu and Lu, Chuan Angel and Shih, Ya-Chen Tina and Jiang, Changchuan},
title = {{Coverage and Prior Authorization Policies for Semaglutide and Tirzepatide in Medicare Part D Plans}},
journal = {JAMA Network Open},
year = {2025},
doi = {10.1001/jamanetworkopen.2025.29842},
url = {https://doi.org/10.1001/jamanetworkopen.2025.29842}
}
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