Gary Humfleet, PhD

Title(s)Professor, Psychiatry
SchoolSchool of Medicine
Address675 18th Street, #1426
San Francisco CA 94107
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    Title(s)UCSF Weill Institute for Neurosciences

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    I am a clinical psychologist and Professor in the Department of Psychiatry at the University of California, San Francisco. In this role I am involved in clinical, research, and training activities. My clinical interests are in individual and group treatment for a variety of mental health issues, including anxiety, depression and addiction. I have extensive experience and expertise in brief treatment and long-term treatment models including cognitive-behavioral, motivational interviewing/enhancement, problem-solving, relaxation training, and 12-step interventions. My clinical and research interests include addressing health and mental health disparities among low-income populations, the LGBT community, and individuals impacted by HIV as well as integrating digital interventions into treatment.

    My research focuses on the evaluation of clinical interventions for nicotine dependence, factors predictive of smoking treatment success, and development of Internet-based interventions for health behavior change. Much of my research focuses on populations experiencing tobacco-related health disparities including LGBT individuals, individuals with HIV disease, smokers with drug dependence, and low-income groups. I have conducted clinical trials evaluating the efficacy of internet-based and telephone-based smoking treatment for LGBT cigarette smokers. I recently led a study evaluating the efficacy and cost-effectiveness of smoking cessation treatment provided in HIV clinical care settings. Other work has focused on interventions with depressed smokers and the development of an extended smoking treatment model based on the conceptualization of nicotine dependence as a chronic, relapsing disorder.

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    A Facebook intervention for young sexual and gender minority smokers
    NIH R21MD011765Aug 1, 2017 - Feb 29, 2020
    Role: Principal Investigator
    LGBT Internet Based Smoking Treatment
    NIH R01DA015791Sep 30, 2002 - May 31, 2007
    Role: Principal Investigator
    Treatment for Complex Patients: Continuing and Extended Care
    NIH P50DA009253Sep 29, 1994 - May 31, 2016
    Role: Co-Investigator
    Maintaining Nonsmoking
    NIH R01DA002538Apr 1, 1980 - May 31, 2016
    Role: Principal Investigator

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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Problematic Social Media Use in Sexual and Gender Minority Young Adults: Observational Study. JMIR Ment Health. 2021 May 28; 8(5):e23688. Vogel EA, Ramo DE, Prochaska JJ, Meacham MC, Layton JF, Humfleet GL. PMID: 34047276; PMCID: PMC8196355.
      View in: PubMed   Mentions: 4  
    2. The Put It Out Project (POP) Facebook Intervention for Young Sexual and Gender Minority Smokers: Outcomes of a Pilot, Randomized, Controlled Trial. Nicotine Tob Res. 2020 08 24; 22(9):1614-1621. Vogel EA, Ramo DE, Meacham MC, Prochaska JJ, Delucchi KL, Humfleet GL. PMID: 31562765; PMCID: PMC7443590.
      View in: PubMed   Mentions: 17     Fields:    Translation:Humans
    3. Sexual and gender minority young adults' smoking characteristics: Assessing differences by sexual orientation and gender identity. Addict Behav. 2019 08; 95:98-102. Vogel EA, Humfleet GL, Meacham M, Prochaska JJ, Ramo DE. PMID: 30875534; PMCID: PMC6545125.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    4. Exploring Identities and Preferences for Intervention Among LGBTQ+ Young Adult Smokers Through Online Focus Groups. J Adolesc Health. 2019 03; 64(3):390-397. Ramo DE, Meacham M, Thrul J, Belohlavek A, Sarkar U, Humfleet G. PMID: 30509769.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    5. Smoking cessation intervention trial outcomes for sexual and gender minority young adults. Health Psychol. 2019 Jan; 38(1):12-20. Vogel EA, Thrul J, Humfleet GL, Delucchi KL, Ramo DE. PMID: 30489104; PMCID: PMC6415665.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    6. Cigarette Smoking Cessation Intervention for Buprenorphine Treatment Patients. Nicotine Tob Res. 2018 04 02; 20(5):628-635. Hall SM, Humfleet GL, Gasper JJ, Delucchi KL, Hersh DF, Guydish JR. PMID: 28549161; PMCID: PMC7207071.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    7. Nicotine biomarkers and rate of nicotine metabolism among cigarette smokers taking buprenorphine for opioid dependency. Drug Alcohol Depend. 2017 09 01; 178:267-270. Gubner NR, Guydish J, Humfleet GL, Benowitz NL, Hall SM. PMID: 28683421; PMCID: PMC5553616.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    8. Smoking cessation abstinence goal in treatment-seeking smokers. Addict Behav. 2015 Mar; 42:148-53. Hall SM, Shi Y, Humfleet GL, Muñoz RF, Reus VI, Prochaska JJ. PMID: 25462664; PMCID: PMC4273741.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    9. Smoking cessation outcomes among sexual and gender minority and nonminority smokers in extended smoking treatments. Nicotine Tob Res. 2014 Sep; 16(9):1207-15. Grady ES, Humfleet GL, Delucchi KL, Reus VI, Muñoz RF, Hall SM. PMID: 24727483; PMCID: PMC4155474.
      View in: PubMed   Mentions: 19     Fields:    Translation:Humans
    10. Cost-effectiveness of extended cessation treatment for older smokers. Addiction. 2014 Feb; 109(2):314-22. Barnett PG, Wong W, Jeffers A, Munoz R, Humfleet G, Hall S. PMID: 24329972; PMCID: PMC4020783.
      View in: PubMed   Mentions: 9     Fields:    Translation:HumansPHPublic Health
    11. Reciprocal effects of alcohol and nicotine in smoking cessation treatment studies. Addict Behav. 2014 Mar; 39(3):637-43. Lisha NE, Carmody TP, Humfleet GL, Delucchi KL. PMID: 24333039; PMCID: PMC3906916.
      View in: PubMed   Mentions: 18     Fields:    Translation:Humans
    12. A randomized clinical trial of smoking cessation treatments provided in HIV clinical care settings. Nicotine Tob Res. 2013 Aug; 15(8):1436-45. Humfleet GL, Hall SM, Delucchi KL, Dilley JW. PMID: 23430708; PMCID: PMC3715392.
      View in: PubMed   Mentions: 53     Fields:    Translation:Humans
    13. Alcohol and marijuana use in the context of tobacco dependence treatment: impact on outcome and mediation of effect. Nicotine Tob Res. 2012 Aug; 14(8):942-51. Hendricks PS, Delucchi KL, Humfleet GL, Hall SM. PMID: 22259148; PMCID: PMC3439865.
      View in: PubMed   Mentions: 17     Fields:    Translation:Humans
    14. Using extended cognitive behavioral treatment and medication to treat dependent smokers. Am J Public Health. 2011 Dec; 101(12):2349-56. Hall SM, Humfleet GL, Muñoz RF, Reus VI, Prochaska JJ, Robbins JA. PMID: 21653904; PMCID: PMC3222443.
      View in: PubMed   Mentions: 30     Fields:    Translation:Humans
    15. Longitudinal analysis of abstinence-specific social support and smoking cessation. Health Psychol. 2009 Jul; 28(4):465-72. Lawhon D, Humfleet GL, Hall SM, Muñoz RF, Reus VI. PMID: 19594271.
      View in: PubMed   Mentions: 27     Fields:    Translation:HumansPHPublic Health
    16. Characteristics of HIV-positive cigarette smokers: a sample of smokers facing multiple challenges. AIDS Educ Prev. 2009 Jun; 21(3 Suppl):54-64. Humfleet GL, Delucchi K, Kelley K, Hall SM, Dilley J, Harrison G. PMID: 19537954; PMCID: PMC2752468.
      View in: PubMed   Mentions: 46     Fields:    Translation:Humans
    17. Extended treatment of older cigarette smokers. Addiction. 2009 Jun; 104(6):1043-52. Hall SM, Humfleet GL, Muñoz RF, Reus VI, Robbins JA, Prochaska JJ. PMID: 19392908; PMCID: PMC2718733.
      View in: PubMed   Mentions: 54     Fields:    Translation:Humans
    18. Evaluating the validities of different DSM-IV-based conceptual constructs of tobacco dependence. Addiction. 2008 Jul; 103(7):1215-23. Hendricks PS, Prochaska JJ, Humfleet GL, Hall SM. PMID: 18554351; PMCID: PMC2744341.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    19. Physical activity as a strategy for maintaining tobacco abstinence: a randomized trial. Prev Med. 2008 Aug; 47(2):215-20. Prochaska JJ, Hall SM, Humfleet G, Munoz RF, Reus V, Gorecki J, Hu D. PMID: 18572233; PMCID: PMC2536696.
      View in: PubMed   Mentions: 35     Fields:    Translation:HumansPHPublic Health
    20. Older versus younger treatment-seeking smokers: differences in smoking behavior, drug and alcohol use, and psychosocial and physical functioning. Nicotine Tob Res. 2008 Mar; 10(3):463-70. Hall SM, Humfleet GL, Gorecki JA, Muñoz RF, Reus VI, Prochaska JJ. PMID: 18324565; PMCID: PMC3247917.
      View in: PubMed   Mentions: 20     Fields:    Translation:Humans
    21. Therapeutic drug monitoring of nortriptyline in smoking cessation: a multistudy analysis. Clin Pharmacol Ther. 2008 Mar; 83(3):436-42. Mooney ME, Reus VI, Gorecki J, Hall SM, Humfleet GL, Muñoz RF, Delucchi K. PMID: 17687275; PMCID: PMC2700120.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    22. Treating tobacco dependence in clinically depressed smokers: effect of smoking cessation on mental health functioning. Am J Public Health. 2008 Mar; 98(3):446-8. Prochaska JJ, Hall SM, Tsoh JY, Eisendrath S, Rossi JS, Redding CA, Rosen AB, Meisner M, Humfleet GL, Gorecki JA. PMID: 17600251; PMCID: PMC2253568.
      View in: PubMed   Mentions: 51     Fields:    Translation:Humans
    23. Belief about drug assignment and abstinence in treatment of cigarette smoking using nortriptyline. Nicotine Tob Res. 2007 Apr; 9(4):467-71. Hall SM, Gorecki JA, Reus VI, Humfleet GL, Muñoz RF. PMID: 17454701.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    24. Treatment for cigarette smoking among depressed mental health outpatients: a randomized clinical trial. Am J Public Health. 2006 Oct; 96(10):1808-14. Hall SM, Tsoh JY, Prochaska JJ, Eisendrath S, Rossi JS, Redding CA, Rosen AB, Meisner M, Humfleet GL, Gorecki JA. PMID: 17008577; PMCID: PMC1586139.
      View in: PubMed   Mentions: 98     Fields:    Translation:Humans
    25. Cost-effectiveness of bupropion, nortriptyline, and psychological intervention in smoking cessation. J Behav Health Serv Res. 2005 Oct-Dec; 32(4):381-92. Hall SM, Lightwood JM, Humfleet GL, Bostrom A, Reus VI, Muñoz R. PMID: 16215448.
      View in: PubMed   Mentions: 21     Fields:    Translation:Humans
    26. Cost-Effectiveness of Bupropion, Nortriptyline, and Psychological Intervention in Smoking Cessation. The Journal of Behavioral Health Services & Research. 2005 Oct 1; 32(4):381???392. Hall HS, Lightwood LJ, Humfleet HG, Bostrom BA, Reus RV, Mu??oz MR. .
      View in: Publisher Site   Mentions:
    27. GREENWOOD ET AL. RESPOND. American Journal of Public Health. 2005 Jun 1; 95(6):929-a-930. Greenwood GG, Paul PJ, Pollack PL, Binson BD, Catania CJ, Chang CJ, Humfleet HG, Stall SR. .
      View in: Publisher Site   Mentions:
    28. Preliminary evidence of the association between the history of childhood attention-deficit/hyperactivity disorder and smoking treatment failure. Nicotine Tob Res. 2005 Jun; 7(3):453-60. Humfleet GL, Prochaska JJ, Mengis M, Cullen J, Muñoz R, Reus V, Hall SM. PMID: 16085513.
      View in: PubMed   Mentions: 50     Fields:    Translation:Humans
    29. Acceptance of nicotine dependence treatment among currently depressed smokers. Nicotine Tob Res. 2005 Apr; 7(2):217-24. Haug NA, Hall SM, Prochaska JJ, Rosen AB, Tsoh JY, Humfleet G, Delucchi K, Rossi JS, Redding CA, Eisendrath S. PMID: 16036278.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    30. Tobacco use and cessation among a household-based sample of US urban men who have sex with men. Am J Public Health. 2005 Jan; 95(1):145-51. Greenwood GL, Paul JP, Pollack LM, Binson D, Catania JA, Chang J, Humfleet G, Stall R. PMID: 15623875; PMCID: PMC1449867.
      View in: PubMed   Mentions: 54     Fields:    Translation:Humans
    31. Depressed smokers and stage of change: implications for treatment interventions. Drug Alcohol Depend. 2004 Nov 11; 76(2):143-51. Prochaska JJ, Rossi JS, Redding CA, Rosen AB, Tsoh JY, Humfleet GL, Eisendrath SJ, Meisner MR, Hall SM. PMID: 15488338.
      View in: PubMed   Mentions: 47     Fields:    Translation:HumansCTClinical Trials
    32. Extended nortriptyline and psychological treatment for cigarette smoking. Am J Psychiatry. 2004 Nov; 161(11):2100-7. Hall SM, Humfleet GL, Reus VI, Muñoz RF, Cullen J. PMID: 15514412.
      View in: PubMed   Mentions: 60     Fields:    Translation:HumansCTClinical Trials
    33. Influences of mood, depression history, and treatment modality on outcomes in smoking cessation. J Consult Clin Psychol. 2004 Aug; 72(4):563-70. Haas AL, Muñoz RF, Humfleet GL, Reus VI, Hall SM. PMID: 15301640.
      View in: PubMed   Mentions: 66     Fields:    Translation:HumansCTClinical Trials
    34. Is marijuana use becoming a 'gateway' to nicotine dependence? Addiction. 2004 Jan; 99(1):5-6. Humfleet GL, Haas AL. PMID: 14678052.
      View in: PubMed   Mentions: 21     Fields:    Translation:Humans
    35. PROMOTING PHYSICAL ACTIVITY IN A SMOKING CESSATION INTERVENTION FOR OLDER ADULTS. Medicine & Science in Sports & Exercise. 2003 May 1; 35(5):s220. Prochaska PJ, Humfleet HG, Muñoz MR, Reus RV, Hall HS. .
      View in: Publisher Site   Mentions:
    36. Psychological intervention and antidepressant treatment in smoking cessation. Arch Gen Psychiatry. 2002 Oct; 59(10):930-6. Hall SM, Humfleet GL, Reus VI, Muñoz RF, Hartz DT, Maude-Griffin R. PMID: 12365880.
      View in: PubMed   Mentions: 56     Fields:    Translation:HumansPHPublic HealthCTClinical Trials
    37. Development of major depression after treatment for smoking cessation. Am J Psychiatry. 2000 Mar; 157(3):368-74. Tsoh JY, Humfleet GL, Muñoz RF, Reus VI, Hartz DT, Hall SM. PMID: 10698811.
      View in: PubMed   Mentions: 55     Fields:    Translation:Humans
    38. History of alcohol or drug problems, current use of alcohol or marijuana, and success in quitting smoking. Addict Behav. 1999 Jan-Feb; 24(1):149-54. Humfleet G, Muñoz R, Sees K, Reus V, Hall S. PMID: 10189984.
      View in: PubMed   Mentions: 47     Fields:    Translation:Humans
    39. Superior efficacy of cognitive-behavioral therapy for urban crack cocaine abusers: main and matching effects. J Consult Clin Psychol. 1998 Oct; 66(5):832-7. Maude-Griffin PM, Hohenstein JM, Humfleet GL, Reilly PM, Tusel DJ, Hall SM. PMID: 9803702.
      View in: PubMed   Mentions: 34     Fields:    Translation:HumansCTClinical Trials
    40. Nortriptyline and cognitive-behavioral therapy in the treatment of cigarette smoking. Arch Gen Psychiatry. 1998 Aug; 55(8):683-90. Hall SM, Reus VI, Muñoz RF, Sees KL, Humfleet G, Hartz DT, Frederick S, Triffleman E. PMID: 9707377.
      View in: PubMed   Mentions: 89     Fields:    Translation:HumansCTClinical Trials
    41. Mood management and nicotine gum in smoking treatment: a therapeutic contact and placebo-controlled study. J Consult Clin Psychol. 1996 Oct; 64(5):1003-9. Hall SM, Muñoz RF, Reus VI, Sees KL, Duncan C, Humfleet GL, Hartz DT. PMID: 8916629.
      View in: PubMed   Mentions: 54     Fields:    Translation:HumansCTClinical Trials
    42. Sex dfferences in the relation of mood to weight gain after quitting smoking. Experimental and Clinical Psychopharmacology. 1996 Jan 1; 4(2):178. Frederick FS, Hall HS, Humfleet HG, Muñoz MR. .
      View in: Publisher Site   Mentions:
    43. Using Goal-Oriented Counseling; and Peer Support to Reduce HIV/AIDS Risk Among Drug Users Not in Treatment. Journal of Ethnicity in Substance Abuse. 1993 Jul 1; 7(3-4):185-204. Rhodes RF, Humfleet HG. .
      View in: Publisher Site   Mentions:
    44. Stigmatization of AIDS Patients by Mental Health Professionals. Professional Psychology Research and Practice. 1991 Jan 1; 22(5):357-361. Crawford CI, Humfleet HG, Ribordy RS, Ho HF, Vickers VV. .
      View in: Publisher Site   Mentions:
    45. Motor slowing in asymptomatic HIV infection. Percept Mot Skills. 1989 Jun; 68(3 Pt 2):1331-8. Fitzgibbon ML, Cella DF, Humfleet G, Griffin E, Sheridan K. PMID: 2762096.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
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