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Andrew P. Loehrer, MD, MPH

Title(s)
Associate Professor of Surgery
Associate Professor of The Dartmouth Institute

Department(s)
Surgery
The Dartmouth Institute

Education
BS - Loyola University Chicago (2005)
MD - Loyola University Chicago, Stritch School of Medicine (2009)
MPH - Harvard TH Chan School of Public Health (2016)

Contact Information

Dartmouth-Hitchcock Medical Center
One Medical Center Drive
Lebanon NH 03756

Office: 603-650-7901
Email: andrew.p.loehrer@hitchcock.org


Professional Interests

Dr. Loehrer is a surgical oncologist who treats patients with cancer of the skin and soft-tissue, breast, and gastrointestinal track. Loehrer is also a health services researcher with a focus on marginalized and oppressed populations, including evaluation of state and federal health policy, racial and socioeconomic inequity in health and health care, and care delivery for diverse populations. As a clinician and researcher, Dr. Loehrer commits to fostering an equitable, just, and inclusive healing and learning environment for patients, collaborators, and learners.


Selected Publications

 

Contemporary neighborhood redlining and racial mortgage lending bias and disparities in prostate cancer survival.
Lawrence WR, Freedman ND, McGee-Avila JK, Hong HG, Gomez SL, Loehrer AP, Beyer KMM, Zhou Y, Magnani JW, Neighbors HW, Johnson JA, Lin Z, Davidoff AJ, Llanos AAM, Shiels MS
Cancer. 2025 Apr 15;131(8):e35850. doi: 10.1002/cncr.35850.
PMID: 40233138

Influence of Medicaid Expansion on Rural Medicare Beneficiaries Undergoing Colon Cancer-Directed Surgery in the United States.
Loehrer AP, Wang Q, O'Malley AJ, Wong SL, Tosteson ANA
Ann Surg Oncol. 2025 Apr 4; doi: 10.1245/s10434-025-17266-0. Epub 2025 Apr 4.
PMID: 40185979

Travel burden and bypassing closest site for surgical cancer treatment for urban and rural oncology patients.
Onega T, Ramkumar N, Brooks GA, Loehrer AP, Kapadia NS, O'Malley AJ, Fraze TK, Smith RE, Wang Q, Wong SL, Tosteson ANA
J Rural Health. 2025 Mar;41(2):e12890. doi: 10.1111/jrh.12890. Epub 2024 Oct 12.
PMID: 39394970

Interaction of Insurance and Neighborhood Income on Operative Colorectal Cancer Outcomes Within a National Database.
Allar BG, Abraham L, Eruchalu CN, Rahimi A, Dey T, Peck GL, Kwakye G, Loehrer AP, Crowell KT, Messaris E, Bergmark RW, Ortega G
J Surg Res. 2024 Nov;303:95-104. doi: 10.1016/j.jss.2024.08.015. Epub 2024 Sep 19.
PMID: 39303651

Trends in Racial and Ethnic Differences in Declined Surgery for Resectable Malignancies in the United States.
Patel VR, Liu M, Snyder RA, Loehrer AP, Haynes AB
Ann Surg. 2025 May 1;281(5):711-719. doi: 10.1097/SLA.0000000000006516. Epub 2024 Sep 3.
PMID: 39225400

The Pathology of Poverty: Social Conditions Driving Breast Cancer Inequity at the Level of Tumor Biology.
Loehrer AP, Mirpuri S, Fayanju OM
Ann Surg. 2024 Aug 15; doi: 10.1097/SLA.0000000000006504. Epub 2024 Aug 15.
PMID: 39145383

Development of Neighborhood Trajectories Employing Historic Redlining and the Area Deprivation Index.
Carlos HA, Weiss JE, Carter B, Akre EL, Diaz A, Loehrer AP
J Urban Health. 2024 Jun;101(3):473-482. doi: 10.1007/s11524-024-00883-7. Epub 2024 Jun 5.
PMID: 38839733

Examining Medicaid Waivers-An Opportunity to Promote Equity in Cancer Care.
Greene LJ, Carter B, Loehrer AP
JAMA Oncol. 2024 Mar 1;10(3):291-292. doi: 10.1001/jamaoncol.2023.6814.
PMID: 38270960

Development of Neighborhood Trajectories employing Historic Redlining and the Area Deprivation Index.
Carlos H, Weiss JE, Carter B, Akre EL, Diaz A, Loehrer AP
Res Sq. 2023 Dec 22; pii: rs.3.rs-3783331. doi: 10.21203/rs.3.rs-3783331/v1. Epub 2023 Dec 22.
PMID: 38196649

The Association of Rural Residence With Surgery and Adjuvant Radiation in Medicare Beneficiaries With Rectal Cancer.
Sha ST, Usadi B, Wang Q, Tomaino M, Brooks GA, Loehrer AP, Wong SL, Tosteson ANA, Colla CH, Kapadia NS
Adv Radiat Oncol. 2023 Nov-Dec;8(6):101286. doi: 10.1016/j.adro.2023.101286. Epub 2023 Jun 8.
PMID: 38047230

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