Dr. Haldeman received his doctorate in Counseling Psychology from the University of Washington in 1983, and started full-time independent practice in Seattle in 1984. He found early on that the profession was so diverse, and the lesbian and gay database in psychology so new, that his own clinical and research interests in sexual orientation enabled him to make a contribution to the mental health needs of lesbian and gay people, as well as educating a dominant culture in need of accurate information about sexual orientation and gender identity.
After starting his practice, Haldeman began to explore particular areas within the competent and ethical treatment of lesbian, gay and bisexual clients. Haldeman had subsequent opportunities to write articles and co-author the American Psychological Association's 1997 policy statement on Conversion Therapy and its two versions of the Guidelines for Psychotherapy with Lesbian and Gay Clients. Since then, he has authored over 50 journal articles and book chapters, and is currently working on a book that describes the history and abuses of efforts to change sexual orientation and gender identity. In 2011, he facilitated a coalition of California mental health organizations to pass the nation’s first law prohibiting licensed mental health providers from conducting so-called “sexual orientation conversion therapy” with minors.
Dr. Haldeman maintained a full-time practice in the Pike Place Market neighborhood of Seattle for 30 years, with a special focus on the GLBT (Gay, Lesbian, Bisexual and Transgender) Community. For twenty years, he was affiliated with the University of Washington's Psychology Department as a clinical faculty member, and conducted psychological evaluations of pilots and air traffic controllers for the Federal Aviation Administration. At present, he is Chair of the Doctoral Program in Clinical Psychology at John F. Kennedy University in Pleasant Hill, California, where he is also a professor of Assessment. He specializes in relationship counseling with both heterosexual and gay/lesbian couples and families, and lectures all over the world on the ethical and competent treatment of marginalized groups, and the relationship between culture and mental health.
He is active in the American Psychological Association (APA), and has served in a number of positions in APA governance, including the Association's Board of Directors. Haldeman has also served on the APA's Ethics Committee, the Committee on Lesbian, Gay and Bisexual Concerns, the Board for the Advancement of Psychology in the Public Interest (BAPPI), and the Policy and Planning Board. He served for 17 years on its Council of Representatives and the Council Leadership Team, of which he was Chair in 2016. He has been a member of the Washington State Psychological Association (WSPA) since 1984, and the California Psychological Association since 2007. In 2017, he served CPA as its President. Currently, Haldeman is Chair of the Board for the American Insurance Trust.
Haldeman works at a refugee camp for asylum seekers in Sweden in the summers. He is a regular long distance runner, having completed 8 marathons and over 20 half marathons.