Inaba was one of the original volunteers at the Haight Ashbury Free Clinics in San Francisco which was founded by Dr. David E. Smith in response to the medical needs of the thousands of young people who descended upon San Francisco for the Summer of Love. The Free Clinic opened on June 6, 1967.
In 1969, Inaba co-founded the Detoxification and Rehabilitation Unit of the Haight Ashbury Clinic with Skip Gay, M.D., in response to the epidemic of methamphetamine and heroin addiction. As director of detox, Inaba supervised the treatment of some 350,000 addicts and alcoholics who were self-referred.
Inaba was the CEO and president of the Haight Ashbury Free Clinics from 1989-2005, as well as the past chairman of the San Francisco Asian American Substance Abuse Task Force. He is also the first lifelong Fellow of the Haight Ashbury Free Clinics. While at the Free Clinic (1967-2005) Inaba had a great interest in the development culturally consistent substance abuse treatment services.
The Clinic was initially funded through proceeds of benefit concerts, many of which were organized by Bill Graham. The first of such benefit concerts took place on July 13, 1967 at the Fillmore Auditorium in San Francisco, California. Another, titled "Dr. Sunday's Medicine Show", took place on October 8, 1967 in San Jose, California.
These benefit concerts, organized with promoter Bill Graham (promoter) in the early years of the Clinic, included bands such as Big Brother and the Holding Company, Creedence Clearwater Revival, Ravi Shankar, George Harrison, The Charlatans, Blue Cheer, and Quicksilver Messenger Service. The concerts proved crucial in providing the funding necessary to keep the Clinic doors open during its early years, as traditional sources of funding were not immediately forthcoming.
Through the benefit concerts organized with Bill Graham in the late 1960s and early 1970s, Inaba and Dr. George "Skip" Gay created The Rock Medicine Services in the spring of 1973. Bill Graham staged two consecutive Saturday concerts at Kezar Stadium in San Francisco, California, featuring The Grateful Dead and Led Zeppelin. Bill Graham asked the clinic to staff a "medical emergency care tent" during both concerts. These small stadium concerts, about 18,000 at the Dead and 25,000 at Led Zeppelin, evolved into Bill Graham's Days on the Green concert series. The "medical emergency care tent" became Rock Medicine, a branch of the Haight Ashbury Free Clinics that still exists today and provides medical care at various Bay Area music concerts and events.
Uppers, Downers, All Arounders (ISBN 978-0-926544-39-0), originally published by CNS Productions in 1989 and now in its 8th edition and co-authored by William Cohen, is Inaba's way of explaining the physiological and pharmacological responses that the body has to psychoactive drugs. Psychoactive drugs are those chemicals that can pass through the blood brain barrier and produce a mental effect in the central nervous system. Thus uppers stimulate, downers depress, and psychedelic drugs have a variety of effects on the neurotransmitters.
In the 1980s, Inaba set up the Asian American Recovery Services and, with the Reverend Cecil Williams, he helped set up the Facts on Crack program for Glide African American Extended Family Services.
After leaving the Haight Ashbury Free Clinics, Inaba became the Clinical Director of Genesis Recovery Center in Central Point, Oregon, from 2005 till 2008. He is now the Director of Clinical and Behavioral health Services at the Addiction Recovery Center in Medford, Oregon.
Inaba is currently the Director of Education and Research at CNS Productions, Inc., and has been the scientific advisor and writer of over 50 educational videos produced by CNS Productions.
Dr. Inaba was a co-writer and educational consultant on the following films:"Psychoactive" - 1976
"Uppers, Downers, All Arounders" - 1984
Haight Asbbury Cocaine Film - 1985
"A Matter of Balance" - 1986
Haight Ashbury Crack Film - 1987
"From Opium to Heroin" - 1988
Haight Ashbury Training Series, volumes 1-5 - 1992-94
"Marijuana: the Mirror that Magnifies" -1995
"Methamphetamine: The Rush to Crash" - 1996
"In and Out of Control: Emotional, Physical & Sexual Violence" - 1997
"Roots of Addiction" - 1998
"Heroin: From Pleasure to Pain" - 1999
"Alcohol and Its Effects" - 2000
"Sports and Drugs" - 2001
"Psychoactive: Club Drugs & Inhalants" - 2002
"Cocaine & Crack: A Craving for More" - 2003
"Prescription & OTC Abuse" - 2004
"Co-Occurring Disorders: Mental Health & Drugs" - 2005
"Medical Consequences of Addiction" - 2005
"Marijuana: Neurochemistry & Physiology" - 2006
"Methamphetamine: Neurochemistry and Recovery" - 2007
"Neurochemistry of Relapse and Recovery" - 2008
10-part series: "Use, Abuse and Addiction" - 2009
"Drug and Behavioral Addictions: Roots of Addiction" - 2009
"The Neurochemistry of the Roots of Addiction" - 2011
"Reflections in a Rearview Mirror: How I Got My DUI, Costs & Losses, Physiology, Levels of Use, and How My Life Changed for the Better" (5 parts) - 2013
"Beyond Opiates" - 2013
Uppers, Downers, All Arounders (CNS Productions, 1989; ISBN 978-0-926544-39-0)