Gwen Lapham, PhD, MPH

Gwen Lapham

"My research focuses on primary care, currently in two areas: understanding cannabis use and integration of mental health services for adolescents."

Gwen Lapham, PhD, MPH, MSW

Assistant Investigator, Kaiser Permanente Washington Health Research Institute

Gwen.T.Lapham@kp.org
206-287-2021

Biography

Gwen Lapham, PhD, MPH, MSW, joined Kaiser Permanente Washington Health Research Institute (KPWHRI) in 2013 as an addictions health services researcher. Since then, she has capitalized on her prior social work and health services training to do impactful research on evidence-based primary care for unhealthy substance use, including alcohol, cannabis, and opioids. She has recently begun making strides in understanding cannabis use among primary care patients, including medical use and use among prenatal women.

Dr. Lapham recently completed the CATALyST K12 Washington Learning Health System Program funded by the Agency for Healthcare Research and Quality and the Patient-Centered Outcomes Research Institute. In the program, she partnered with Kaiser Permanente Washington health system leaders and with KPWHRI’s Center for Accelerating Care Transformation to address gaps in the quality of behavioral health care for children and adolescents by developing and testing an integrated approach to adolescent mental health. She expects this work to lead to new evidence for effective implementation of adolescent mental health integrated in primary care.

She is also a co-investigator of the Primary Care Opioid Use Disorders Treatment, or PROUD trial, a pragmatic implementation trial of nurse care management for treatment of opioid use disorders in primary care, as well as the Health Systems node of the National Institute on Drug Abuse Clinical Trials Network. Dr. Lapham’s research projects specific to cannabis include:

  • A pilot study about the prevalence of and reasons for cannabis use among pregnant women. This study uses both cannabis screening results from the electronic health record (EHR) and qualitative interviews.
  • Site principal investigator for a multisite study that examined patient-level and system-level factors associated with the Healthcare Effectiveness Data and Information Set, commonly known as HEDIS, to measure performance for initiation and engagement in treatment for patients with cannabis use disorders.
  • Co-principal investigator for a study evaluating EHR documentation of medical use of cannabis. This study employs natural language processing methods to compare EHR data with data from confidential surveys about medical cannabis use.

Prior to working at KPWHRI, Dr. Lapham focused on qualitative and quantitative evaluation of preventive alcohol interventions in medical settings at the Veterans Health Administration in Seattle.

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RESEARCH INTERESTS AND EXPERIENCE

  • Behavior Change

  • Addictions & Unhealthy Substance Use

  • Health Services & Economics

    Implementation research; quality measurement

  • Implementation Research

    Screening and brief intervention; mental health quality measurement

Recent publications

Hoopes AJ, Brandzel SD, Luce C, Ferguson DM, Shulman L, Chavez B, Lozano P, Lapham GT. What do adolescents and their parents need from mental health integration in primary care? A qualitative exploration of design insights. J Pediatr Health Care. 2022 Aug 8:S0891-5245(22)00174-2. doi: 10.1016/j.pedhc.2022.06.006. [Epub ahead of print]. PubMed

Braciszewski JM, Idu AE, Yarborough BJH, Stumbo SP, Bobb JF, Bradley KA, Rossom RC, Murphy MT, Binswanger IA, Campbell CI, Glass JE, Matson TE, Lapham GT, Loree AM, Barbosa-Leiker C, Hatch MA, Tsui JI, Arnsten JH, Stotts A, Horigian V, Hutcheson R, Bart G, Saxon AJ, Thakral M, Ling Grant D, Pflugeisen CM, Usaga I, Madziwa LT, Silva A, Boudreau DM. Sex differences in comorbid mental and substance use disorders among primary care patients with opioid use disorder. Psychiatr Serv. 2022 Jun 16:appips202100665. doi: 10.1176/appi.ps.202100665. Online ahead of print. PubMed

Lapham GT, Matson TE, Carrell DS, Bobb JF, Luce C, Oliver MM, Ghitza UE, Hsu C, Browne KC, Binswanger IA, Campbell CI, Saxon AJ, Vandrey R, Schauer GL, Pacula RL, Horberg MA, Bailey SR, McClure EA, Bradley KA. Comparison of medical cannabis use reported on a confidential survey vs documented in the electronic health record among primary care patients. JAMA Netw Open. 2022 May 2;5(5):e2211677. doi: 10.1001/jamanetworkopen.2022.11677. PubMed

Carrell DS, Cronkite DJ, Shea M, Oliver M, Luce C, Matson TE, Bobb JF, Hsu C, Binswanger IA, Browne KC, Saxon AJ, McCormack J, Jelstrom E, Ghitza UE, Campbell CI, Bradley KA, Lapham GT. Clinical documentation of patient-reported medical cannabis use in primary care: toward scalable extraction using natural language processing methods. Subst Abus. 2022;43(1):917-924. doi: 10.1080/08897077.2021.1986767. PubMed

Matson TE, Bradley KA, Lapham GT. Self-reported practices of frontline cannabis dispensary workers and the implications for clinicians. JAMA Netw Open. 2021;4(9):e2125262. doi: 10.1001/jamanetworkopen.2021.25262. PubMed

Browne K, Leyva Y, Malte CA, Lapham GT, Tiet QQ. Prevalence of medical and nonmedical cannabis use among veterans in primary care. Psychol Addict Behav. 2021 Aug 26. doi: 10.1037/adb0000725. [Epub ahead of print]. PubMed

Matson TE, Carrell DS, Bobb JF, Cronkite DJ, Oliver MM, Luce C, Ghitza UE, Hsu CW, Campbell CI, Browne KC, Binswanger IA, Saxon AJ, Bradley KA, Lapham GT. Prevalence of medical cannabis use and associated health conditions documented in electronic health records among primary care patients in Washington state. JAMA Netw Open. 2021 May 3;4(5):e219375. doi: 10.1001/jamanetworkopen.2021.9375. PubMed

Tsui JI, Akosile MA, Lapham GT, Boudreau DM, Johnson EA, Bobb JF, Binswanger IA, Yarborough BJH, Glass JE, Rossom RC, Murphy MT, Cunningham CO, Arnsten JH, Thakral M, Saxon AJ, Merrill JO, Samet JH, Bart GB, Campbell CI, Loree AM, Silva A, Stotts AL, Ahmedani B, Braciszewski JM, Hechter RC, Northrup TF, Horigian VE, Bradley KA. Prevalence and medication treatment of opioid use disorder among primary care patients with hepatitis C and HIV. J Gen Intern Med. 2021 Feb 10. doi: 10.1007/s11606-020-06389-7. [Epub ahead of print]. PubMed

Campbell CI, Saxon AJ, Boudreau DM, Wartko PD, Bobb JF, Lee AK, Matthews AG, McCormack J, Liu DS, Addis M, Altschuler A, Samet JH, LaBelle CT, Arnsten J, Caldeiro RM, Borst DT, Stotts AL, Braciszewski JM, Szapocznik J, Bart G, Schwartz RP, McNeely J, Liebschutz JM, Tsui JI, Merrill JO, Glass JE, Lapham GT, Murphy SM, Weinstein ZM, Yarborough BJH, Bradley KA. PRimary Care Opioid Use Disorders treatment (PROUD) trial protocol: a pragmatic, cluster-randomized implementation trial in primary care for opioid use disorder treatment. Addict Sci Clin Pract. 2021;16(1):9. doi: 10.1186/s13722-021-00218-w. PubMed

McClure JB, Lapham G. Tobacco quitline engagement and outcomes among primary care patients reporting use of tobacco or dual tobacco and cannabis: an observational study. Subst Abus. 2020 Dec 3:1-6. doi: 10.1080/08897077.2020.1846665. [Epub ahead of print]. PubMed

 

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New research examines providers’ notes to understand patients’ cannabis use and health conditions.

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Four CATALyST scholars selected to train as learning health system scientists

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Latest News

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Kaiser Permanente researchers explore patients’ marijuana use

Routinely asking about cannabis use can better serve patients by helping clinicians start conversations about risks and benefits.

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innovating care

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Let's put measurement-based care in behavioral health treatment

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KPWHRI In the Media

Gwen Lapham on documentation of medical cannabis use in electronic health records

Medical cannabis use often left undocumented in electronic health records

Mediquality/Reuters Health, June 11