Orlo Clark, M.D.
Professor Emeritus of Surgery
Division of General Surgery
Contact Information
Education
- 1959-63, Cornell University, B.A., Zoology
- 1963-67, Cornell University, M.D., Medicine
Residencies
- 1967-68, University of California, San Francisco, Intern, Surgery
- 1968-70, University of California, San Francisco, Resident, Surgery
- 1971-72, University of California, San Francisco, Senior Resident, Surgery
- 1972-73, University of California, San Francisco, Chief Resident, Surgery
Fellowships
- 1970-71, Hammersmith Hospital, London, Royal Postgraduate M, Endocrine Surgery
Postdoctoral Training
- 1995, Harvard School of Public Health, Unknown, 2 week Program for Clinical Chiefs
Board Certifications
- American Board of Surgery, 1974
Program Affiliations
- UCSF Helen Diller Family Comprehensive Cancer Center
Clinical Expertise
- Adrenal Tumors
- Adrenocortical Carcinoma
- Conn's Syndrome
- Cushing's Syndrome
- Hyperparathyroidism
- Hyperthyroidism
- Laparoscopic Adrenalectomy
- Laparoscopic Parathyroidectomy
- Laparoscopic Thyroidectomy
- Multinodular Goiter
- Neuroendocrine (Islet Cell) Tumors
- Pheochromocytoma
- Reoperative Endocrine Surgery
- Thyroid Cancer
- Thyroid Nodules
Research Interests
- Thyroid and other endocrine neoplasms
Biography
Dr. Orlo H. Clark is Emeritus Professor of Surgery at UCSF. Dr. Clark attended Cornell University and Cornell Medical School. He completed his surgical training and residency at UCSF. He also did a year Fellowship at the Royal Postgraduate Medical Center in London in Endocrine Surgery, and joined the UCSF faculty in 1973.
Dr. Clark was the previous Chief of Surgery at Mt. Zion Medical Center and the Vice Chair of the Department of Surgery. Dr. Clark is recognized as a leader in his field both nationally and internationally. He has been the President of the American Association of Endocrine Surgeons, the American Thyroid Association, the International Association of Endocrine Surgeons, and is President of the Pacific Coast Surgical Association. He is an honorary member of the German Surgical Society, the Turkish Endocrine Surgical Society, the Asian Endocrine Surgical Society, and received a Docteur Honoris Causa (Honorary Doctorate) from Poitier University. Dr. Clark has authored and co-authored over 300 journal manuscripts, chapters, and books. Highly respected by his peers, Dr. Clark was named to the list of U.S. News "America's Top Doctors," a distinction reserved for the top 1% of physicians in the nation for a given specialty.
Featured Publications
- Park JW, Zarnegar R, Kanauchi H, Wong MG, Hyun WC, Ginzinger DG, Lobo M, Cotter P, Duh QY, Clark OH. Troglitazone, the peroxisome proliferator-activated receptor-gamma agonist, induces antiproliferation and redifferentiation in human thyroid cancer cell lines. Thyroid. 15: 222-31, Mar/2005.
- Shen WT, Wong TS, Chung WY, Wong MG, Kebebew E, Duh QY, Clark OH. Valproic acid inhibits growth, induces apoptosis, and modulates apoptosis-regulatory and differentiation gene expression in human thyroid cancer cells. Surgery. 138: 979-84; discussion 984-5, Dec/2005.
- Caron NR, Tan YY, Ogilvie JB, Triponez F, Reiff ES, Kebebew E, Duh QY, Clark OH. Selective modified radical neck dissection for papillary thyroid cancer-is level I, II and V dissection always necessary? World J Surg. 30: 833-40, May/2006.
- Triponez F, Wong M, Sturgeon C, Caron N, Ginzinger DG, Segal MR, Kebebew E, Duh QY, Clark OH. Does familial non-medullary thyroid cancer adversely affect survival? World J Surg. 30: 787-93, May/2006.
In the News
- UCSF Department of Surgery - March 01, 2012In its survey for 2012, U.S. News in collaboration with Castle Connolly Medical Ltd. listed twenty-five (25) surgeons in the UCSF Department of Surgery, nearly one-third (1/3) of the clinical faculty, on the list of U.S. News "Top Doctors". The list, compiled from the opinion of colleagues, denotes the top 10% of physicians within a region practicing a given specialty. Fifteen of the 25 department surgeons were also named by their peers to the list of America's Top Doctors (ATD), a [...]
- UCSF Endocrine Surgery - February 05, 2008Orlo H. Clark, M.D., former Chief of Surgery at UCSF Mount Zion, and his surgical colleagues Quan-Yang Duh, M.D., Wen T. Shen, M.D., and Jessica Gosnell, M.D. are leading efforts to identify molecular markers in biopsy tissue as the number of thyroid cases continue rise in the U.S.
