Hans Schoellhammer, M.D.
Surgical oncologist Hans Schoellhammer, M.D., F.A.C.S., says his work as a surgeon gives him special satisfaction. “By working with one’s hands,” he says, “one can treat patients and have an immediate and dramatic impact on their health.”
Dr. Schoellhammer is a double board-certified surgical oncologist. He is board-certified in surgery and complex general surgical oncology.
He graduated from UC Berkeley with a B.A. in molecular and cell biology, with emphasis in immunology and pathogenesis, received his M.D. from Drexel University College of Medicine, completed his general surgery residency at Harbor-UCLA Medical Center, and completed a postdoctoral melanoma research fellowship at the John Wayne Cancer Institute in Santa Monica, CA, where he was mentored by Donald L.
Morton, M.D.
Dr. Schoellhammer joined City of Hope’s faculty after completing the Complex General Surgical Oncology Fellowship at City of Hope, where he served as the Chief Administrative Fellow.
He has received numerous professional accolades and awards during his career, including awards for providing top patient experience at City of Hope. He is an active member of professional associations and committees, and his academic work on new treatments for melanoma and other cancers have been published in multiple textbooks and peer-reviewed scientific and medical journals.
Dr. Schoellhammer works out of our Mission Hills and Antelope Valley practices, as well as at the City of Hope main campus in Duarte, California.
Antelope Valley
Lancaster, CA 93534
Mission Hills
Suite 150
Mission Hills, CA 91345
The American Board of Surgery, General Surgery
California medical license
The American Board of Surgery, Complex General Surgical Oncology
2004, M.D., Drexel University College of Medicine, Philadelphia, PA
1998, B.A., Molecular and Cell Biology, Immunology and Pathogenesis emphasis, UC Berkeley, Berkeley, CA
2012-2014, Complex General Surgical Oncology Fellowship, City of Hope, Duarte, CA
2008-2010, Postdoctoral Research Fellowship, John Wayne Cancer Institute, Santa Monica, CA
2005-2012, General Surgery, Harbor-UCLA Medical Center, Torrance, CA
2004-2005, General Surgery, Harbor-UCLA Medical Center, Torrance, CA
- 2021, City of Hope Patient Experience Excellence Award
- 2020, City of Hope Patient Experience Excellence Award
- 2020, City of Hope Values in Action Award – Collaboration
- 2016, Fellow of the American College of Surgeons
- 2013-2014, City of Hope Complex General Surgical Oncology Fellowship, Chief Administrative Fellow
American College of Surgeons
Society of Surgical Oncology
American Society of Clinical Oncology
Association for Academic Surgery
Southwest Oncology Group
Southern California Chapter American College of Surgeons
Los Angeles County Medical Association
- Schoellhammer HF, Gregorian AC, Sarkisyan GF, Petrie BA. How Important is Rigid Proctosigmoidoscopy in Localizing Rectal Cancer? The American Journal of Surgery. 2008 Dec;196(6):904-8. PMID: 19095107.
- Torisu-Itakura H, Schoellhammer H, Huynh Y, Hausmann S, Lutterbuese R, Kufer P, Baeuerle PA, Morton DL. Anti-tumor activity of a T cell-engaging MCSP-specific BiTE antibody at very low effector to target ratios: A new approach to treat metastatic melanoma [abstract]. In: Proceedings of the 100th Annual Meeting of the American Association for Cancer Research; 2009 Apr 18-22; Denver, CO. Philadelphia (PA): AACR; 2009. Abstract nr 3248.
- Schoellhammer HF, Torisu-Itakura H, Huynh Y, Sim M, Faries MB, Morton DL. Second primary melanoma: Risk factors, histopathologic features, and survival. Journal of Clinical Oncology 27:15s, 2009 (suppl; abstr 9073).
- Schoellhammer HF, Torisu-Itakura H, Sim M, Baeuerle P, Kufer P, Morton DL. Single-chain bispecific BiTE antibody specific for CD3 and melanoma-associated chondroitin sulfate proteoglycan: In vitro and in vivo antimelanoma activity [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; 2010. Abstract nr 5626.
- Torisu-Itakura H, Schoellhammer HF, Sim M, Irie RF, Baeuerle P, Morton DL. Redirected Lysis of Cells. Journal of Immunotherapy. 2011 Oct;34(8):597-605. PMID: 21904216.
- Schoellhammer HF, Kim J, Nelson R, Singh G, Chen SL. Predictors of Surgical Resection and Survival in Hepatoblastoma: A Population-Based Examination. Journal of Surgical Research. 2013 Feb;197(2):192.
- Guye ML, Schoellhammer HF, Chiu LW, Kim J, Lai LL, Singh G. Designing Liver Resections and Pushing the Envelope with Resections for Hepatic Colorectal Metastases. Indian Journal of Surgical Oncology. 2013 Dec;4(4):349-355. Epub 2013 Jul 12. Review. DOI:10.1007/s13193-013-0256-5. PMID: 24426756.
- Schoellhammer HF, Goldner BS, Kim J, Singh G. Beyond the Whipple Operation: Radical Resections for Cancers of the Head of the Pancreas. Indian Journal of Surgical Oncology. 2015 Mar;6(1):41-46. DOI:10.1007/s13193-013-0258-3. Epub 2013 Jul 17. Review. PMID: 25937763.
- Falor A, Arrington AK, Luu C, Schoellhammer HF, Ko M, Chow W, D’Apuzzo M, Park J, Kim J. Massive Intra-Abdominal Imatinib-Resistant Gastrointestinal Stromal Tumor in a 21-Year-Old Male. Case Reports in Medicine. 2013;2013:373981. DOI:10.1155/2013/373981. Epub 2013 Aug 4. PMID: 23983708.
- Luu C, Goldstein L, Goldner B, Schoellhammer HF, Chen SL. Trends in Radiotherapy After Breast-Conserving Surgery in Elderly Patients with Early-Stage Breast Cancer. Annals of Surgical Oncology. 2013 Oct;20(10):3266-73. DOI:10.1245/s10434-013-3150-z. Epub 2013 Aug 22. PMID: 23975294.
- Luu C, Arrington AK, Schoellhammer HF, Singh G, Kim J. Targeted therapies in colorectal cancer: surgical considerations. Journal of Gastrointestinal Oncology. 2013 Sep;4(3):328-36. DOI:0.3978/j.issn.2078-6891.2013.032. PMID: 23997944.
- Schoellhammer HF, Singh G, Leong L. Synchronous Metastatic Rectal Cancer Completely Resected After Multi-Disciplinary Planning and Treatment: A Case Report. Journal of the National Comprehensive Cancer Network. 2013 Sep 1;11 Suppl 4:S3-8. PMID: 24158969.
- Goldner B, Behrendt CE, Schoellhammer HF, Lee B, Chen SL. Incidence of Inflammatory Breast Cancer in Women, 1992-2009, United States. Annals of Surgical Oncology. 2014 Apr;21(4):1267-70. DOI:10.1245/s10434-013-3439-y. Epub 2013 Dec 24. PMID: 24366421.
- Schoellhammer HF, Nelson RA, Hamner JB, Singh G, Kim J. Select Racial Ethnic Groups Significantly Impact Survival Among Asian Rectal Cancer Patients. Journal of Surgical Research. 2014 Feb;186(2):505.
- Schoellhammer HF, Hsu F, Vito C, Chu P, Park J, Waisman J, Kim J. Complete Pathologic Response of HER2-Positive Breast Cancer Liver Metastasis with Dual Anti-HER2 Antagonism. BMC Cancer. 2014 Apr 4;14(1):242. DOI: 10.1186/1471-2407-14-242. PMID: 24708527.
- Schoellhammer HF, Fong Y, Gagandeep S. Techniques for Prevention of Pancreatic Leak After Pancreatectomy. Hepatobiliary Surgery and Nutrition. 2014;3(5):277-288. DOI: 10.3978/j.issn.2304-3881.2014.08.08. Review. PMID: 25392839.
- Schoellhammer HF, Goldner B, Merchant SJ, Fong Y, Gagandeep S. Colorectal Liver Metastases: Making the Unresectable Resectable Using Irreversible Electroporation for Microscopic Positive Margins – A Case Report. BMC Cancer. 2015 Apr 12;15(1):271. DOI: 10.1186/s12885-015-1279-9. PMID 25886376.
- Choi AH, Nelson RA, Schoellhammer HF, Cho W, Ko M, Arrington A, Oxner CR, Fakih M, Wong J, Sentovich SM, Garcia-Aguilar J, Kim J. Accuracy of Computed Tomography in Nodal Staging of Colon Cancer Patients. World Journal of Gastrointestinal Surgery. 2015 Jul 27;7(7): 116-22. DOI: 10.4240/wjgs.v7.17.116. PMID 26225194.
- Schoellhammer HF, Singh G, Fong Y. The Role of Neoadjuvant Chemotherapy in Patients With Resectable Colorectal Liver Metastasis: Where Are We Now? Current Colorectal Cancer Reports. (2016) 12: 1. doi:10.1007/s11888-016-0303-z.
- Jones MS, Torisu-Itakura H, Flaherty DC, Schoellhammer HF, Lee J, Sim MS, Faries MB. Second Primary Melanoma: Risk Factors, Histopathologic Features, Survival, and Implications for Follow-Up. The American Surgeon. 2016 Oct;82(10):1009-1013. PMID 27779995.
- Hamner JB, Raoof M, Dumitra S, Schoellhammer HF, Crowder C, Ituarte PHG, Kim J, Singh G. Evolving Role of Hepatic Resection for Metastatic Urologic Malignancies. The American Surgeon. 2017 Jun 1;83(6):628-632. PMID 28637566.
- Desiderio J, Stewart CL, Sun V, Melstrom L, Warner S, Lee B, Schoellhammer HF, Trisal V, Paz B, Fong Y, Woo Y. Enhanced Recovery after Surgery for Gastric Cancer Patients Improves Clinical Outcomes at a US Cancer Center. Journal of Gastric Cancer. 2018 Sep;18(3):230-241. DOI: 10.5230/jgc.2018.18.e24. Epub 2018 Aug 16. PMID 30276000.
- De Andrade JP, Wong P, O'Leary MP, Parekh V, Amini A, Schoellhammer HF, Margolin KA, Afkhami M, Melstrom LG. Multidisciplinary Care for Melanoma of Unknown Primary: Experience in the Era of Molecular Profiling. Annals of Surgical Oncology. 2020 Dec;27(13):5240-5247. doi: 10.1245/s10434-020-09112-2. Epub 2020 Sep 9. PMID: 32909128.
Textbooks
- Fong Y, Kauffmann RM, Marcinkowski E, Singh G, Schoellhammer HF, editors. Surgical Emergencies in the Cancer Patient. Switzerland: Springer; 2017.
- Schoellhammer HF, Fong Y, Singh G. Extrahepatic Bile Duct Tumors. In: Jarnagin WR, Allen PJ, Chapman WC, D’Angelica MI, DeMatteo RP, Do R, Vauthey J, editors. Blumgart’s Surgery of the Liver, Biliary Tract, and Pancreas. 6th ed. Vol. 1. Philadelphia: Elsevier; 2017. p. 818-832.
- Lewis A, Schoellhammer HF, Singh G. The Modified Appleby Procedure for Locally Advanced Pancreatic Body/Tail Cancer: How I Do It. In: Tewari M, editor. Surgery for Pancreatic and Periampullary Cancer: Principles and Practice. 1st ed. Singapore: Springer; 2018. p. 177-184.