Singer is vice president of finance and treasurer of Affymax, and Fodor is vice president and director of physical sciences for Affymax Research Institute

He is a co- founder and chief executive officer of Oculex Pharmaceuticals, which is developing novel drug delivery technology to improve treatment of serious eye diseases, ChemTrak said...Mark Skaletsky was named president and chief executive officer of GelTex Inc...of San Diego named as president and chief executive officer Blake Ingle, former president and CEO of the Imcera Group

of Alameda, Calif., as its president and chief executive officer...Shapiro was vice president, corporate controller and chief accounting officer at EPIC Healthcare Group Inc...Barrios was president and chief executive officer of Boehringer Ingelheim Corp

Also, Richard Montagna has resigned as company president and from the board of directors...He was the company's co-founder and president since its inception in 1982...and Kenneth Indorato, formerly of Genetics Institute, a quality control technician

of Malvern, Pa., named Martyn Greenacre president and chief executive officer and a member of the company's board of directors...He was executive vice president, tax and corporate development for ICN Pharmaceuticals, ICN Biomedical's parent company. (c) 1997 American Health Consultants

He is currently chairman and managing director of the U.K...Raisman retired as chairman and chief executive officer of Shell UK Ltd...in 1985, and Wilkerson is chairman of The Wilkerson Group, a health care industry consulting firm

of Warren, N.J., named Thomas Odiorne president and chief operating officer...Phillip Radlick was appointed president and chief executive officer of Hepatix Inc...Masters was president and chief executive officer of Hemosol Inc., a biopharmaceutical company

Leighton was president and chief executive officer of Genesis Pharmaceuticals Inc., a privately held biotechnology company being acquired by Sphinx...and Robert Mueller, director of Arthur D. Little Ltd. (U.K.) Shaman Pharmaceuticals Inc...Iris is a principal with Iris and Associates and also serves on the boards of Damon Corp., Photon Technology International, Langor Biomechanics, Cytyc Corp

And O'Connor was director of screening and biochemical research at Bristol-Myers Squibb...clinical research, and Guenter Ksionski vice president, international clinical research

Xenova Group plc of Oxford, England, appointed Geoffrey McMillan commercial director and a member of the board of directors...McMillan was head of business development and planning for the international pharmaceutical division of F. Hoffmann-La Roche Ltd...and Louis Lavigne Jr., chief financial officer at Genentech Inc

Gillenwater was managing director and director of clinical development at NDA Resources...and Northwest Airlines and a trustee of the Salk Institute. (c) 1997 American Health Consultants

Costello is currently the company's president, and is replacing George Sella, who is retiring at the end of March...Schreiner was associate professor of medicine and pathology at Washington University School of Medicine...of Boulder, Colo., named J. Joseph Marr vice president, research and development, and chief scientific officer

He was chairman and chief executive officer of Regency Group Inc., which specializes in acquisition and restructuring of environmentally sensitive businesses...Nadler was vice president, scientific planning and evaluation, for Sandoz Research Institute

Vestar also named Roger Crossley, president and chief executive officer, to the additional post of chairman of the board...Gray was chief financial officer and secretary of Image Data Corp...He was director of project planning and mangement for all infectious disease projects at Bristol-Myers Squibb Pharmaceutical Research Institute

Kishbauch was vice president, product planning and promotion at Ciba-Geigy...He is vice president of agribusiness and food at British Technology Group USA...Gibson recently retired as vice president and treasurer of Procter & Gamble Co

Wrenn, who has been president, chief operating officer and a director since 1991, replaces Kenneth H. Harper, who will remain chairman...of Norcross, Ga., named James M. Yahres vice president of finance and administration...Steven Shoemaker was promoted to senior vice president from vice president of drug development and medical affairs at Somatogen Inc

Edward Penhoet, vice chairman and chief executive officer of Chiron (NASDAQ:CHIR) of Emeryville, Calif., will assume Renton's responsibilities for managing Chiron's Cetus Oncology and EuroCetus business units and human resources...He was vice president and chief financial officer at T Cell Diagnostics

Fiddler was director and vice president of worldwide product registration for SmithKline Beecham Pharmaceuticals...and Cooper Laboratories, and Bender is a venture capital specialist in the international health care sector. (c) 1997 American Health Consultants

Casey, who is president and chief executive officer of the Mountain View, Calif., company, succeeds John W. Cullingan, who is retiring from the board...Thomas Lewis was named president and chief executive officer of Chiral Technologies Inc...Lewis was vice president and general manager of Celgene Corp