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Biography

Michael Alan Horberg, MD, MAS, FACP, FIDSA is Associate Medical Director for Kaiser Permanente Mid-Atlantic Permanente Medical Group (KPMAS MAPMG), serving greater Baltimore and District of Columbia, suburban Maryland and northern Virginia. In that role, he is responsible for Research, Medical Education, Community Health, Medicaid, Genomics, HIV and STI, Complex Care, LGBTQI+ Health and Infection Prevention.

Dr. Horberg is the director of HIV/AIDS nationally for KP, serving nearly 80,000 members with HIV, as well as Clinical Lead for HIV/AIDS and STI, creating clinical multidisciplinary guidelines to improve such care in KP. He has chaired the KP HIV, Liver Disease, STI, and LGBTQ Health Conference since 2003, bringing together clinical and research staff to ensure best practices.

Under President Obama, Dr. Horberg served on the Presidential Advisory Council on HIV/AIDS (PACHA), and co-chaired the Access to Care and Improved Outcomes Committee. Dr. Horberg is a Fellow of the American College of Physicians and the Infectious Disease Society of America (IDSA). He is Past-Chair of the Board of Directors of the HIV Medicine Association (HIVMA). He has served on the IDSA Quality Performance Committee, and presently co-chairs the HIVMA/IDSA HIV Primary Care Guideline Committee. Dr. Horberg presently serves as the physician chair of the CDC-sponsored Health Care Action Group, promoting sexual health. He has chaired multiple Expert Panels on HIV-related provider performance measures (including ones sponsored by CMS, NCQA, and IDSA), and has served on NIH and CDC peer-review panels. He is past-president of the national Gay and Lesbian Medicine Association.

Dr. Horberg leads HIV, STI, and Infection Prevention for MAPMG. He directs LGBTQI+ care and led creation of Pride Medical and Gender Pathways clinics within KPMAS. In his role as medical director for KPMAS Community Health and chief medical officer for KPMAS Maryland and Virginia Medicaid, he works to improve health equity and care access for underserved populations in the region.

As Executive Director for research, he is responsible for all research in KPMAS. In this role, he leads a department of clinical and data research with over seventy employees. His HIV research interests are HIV quality measures, care improvement, and determinants of optimized multidisciplinary care for HIV-infected patients. He studies epidemiology of HIV, hepatitis, sexually transmitted and COVID infections, leading all hepatitis care programs and COVID efforts in KPMAS. Dr. Horberg has published over 200 manuscripts and delivered over 100 presentations at scientific meetings (all peer-reviewed).

As Director for Medical Education, he is the Designated Institutional Official for KPMAS, with responsibility for all undergraduate, graduate, and continuing medical education. He also leads the KPMAS Medical Genetics and Genomics strategy, and is Executive Sponsor for Commission on Cancer Accreditation and National Surgical Quality Improvement Program.

Dr. Horberg attended Boston University Medical School, and received his Master of Advanced Studies from University of California San Francisco. He completed his residency in internal medicine at University of Chicago Michael Reese Hospital and Medical Center. He is a resident of Maryland, with his husband Chip and their pet poodle Grant.

Activities

Employment (1)

Mid-Atlantic Permanente Medical Group: Rockville, MD, US

2011-04-11 to present | Executive Director Research, Community Benefit, and Medicaid (MAPRI--Research)
Employment
Source: Self-asserted source
Michael Horberg

Education and qualifications (2)

UCSF Medical Center: San Francisco, CA, US

2004-07-01 to 2006-06-11 | MAS
Education
Source: Self-asserted source
Michael Horberg

Boston University: Boston, MA, US

1979-09-01 to 1985-05-19 | MD BA
Education
Source: Self-asserted source
Michael Horberg

Works (14)

The impact of Medicaid expansion under the Affordable Care Act on HIV care continuum outcomes across the United States

Health Affairs Scholar
2024-10-04 | Journal article
Contributors: Peter F Rebeiro; Julia C Thome; Stephen J Gange; Keri N Althoff; Stephen A Berry; Michael A Horberg; Richard D Moore; Michael J Silverberg; Daniel E Sack; Timothy R Sterling et al.
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Characterizing Indicators of Engagement in HIV-Associated Healthcare and Clinical Outcomes among People with HIV and Mpox in Washington, DC: A Nested Case-Control Study of the DC Cohort

Pathogens
2024-01-27 | Journal article
Contributors: Lauren F. O’Connor; Morgan Byrne; Anuja Baskaran; Elisabeth W. Andersen; Michael A. Horberg; Debra A. Benator; Jose Lucar; Rachel V. Denyer; Rachel Lee; Amanda D. Castel et al.
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Preferred source (of 2)‎

Evaluating Clinic-Based Interventions to Reduce Racial Differences in Mortality Among People With Human Immunodeficiency Virus in the United States

The Journal of Infectious Diseases
2023-12-20 | Journal article
Contributors: Lauren C Zalla; Stephen R Cole; Joseph J Eron; Adaora A Adimora; Anissa I Vines; Keri N Althoff; Vincent C Marconi; M John Gill; Michael A Horberg; Michael J Silverberg et al.
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Hospital Readmissions Among Persons With Human Immunodeficiency Virus in the United States and Canada, 2005–2018: A Collaboration of Cohort Studies

The Journal of Infectious Diseases
2023-12-20 | Journal article
Contributors: Thibaut Davy-Mendez; Sonia Napravnik; Brenna C Hogan; Joseph J Eron; Kelly A Gebo; Keri N Althoff; Richard D Moore; Michael J Silverberg; Michael A Horberg; M John Gill et al.
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Pride Medical at Capitol Hill: A New Lesbian, Gay, Bisexual, Transgender, Queer/Questioning plus (LGBTQ+) Patient Care Option at Kaiser Permanente Mid-Atlantic States

Healthcare
2023-10-24 | Journal article
Contributors: Mary Cabell Jonas; Keith Egan; Yi-Shin Sheu; Richard J. McCarthy; Michael A. Horberg
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Crossref
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Preferred source (of 2)‎

Psychosocial impacts of the COVID-19 pandemic from a cross-sectional Survey of people living with HIV in Washington, DC

AIDS Research and Therapy
2023-05-09 | Journal article
Contributors: Anne K. Monroe; Paige E. Kulie; Morgan E. Byrne; Brittany C. Wilbourn; Shannon K. Barth; Jenna B. Resnik; David M. Huebner; Michael A. Horberg; Amanda D. Castel; Alan E. Greenberg
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Effect of Adopting the New Race-Free 2021 Chronic Kidney Disease Epidemiology Collaboration Estimated Glomerular Filtration Rate Creatinine Equation on Racial Differences in Kidney Disease Progression Among People With Human Immunodeficiency Virus: An Observational Study

Clinical Infectious Diseases
2023-02-08 | Journal article
Contributors: Anthony N Muiru; Erin Madden; Rebecca Scherzer; Michael A Horberg; Michael J Silverberg; Marina B Klein; Angel M Mayor; M John Gill; Sonia Napravnik; Heidi M Crane et al.
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Post-acute sequelae of SARS-CoV-2 with clinical condition definitions and comparison in a matched cohort

Nature Communications
2022-10-12 | Journal article
Contributors: Michael A. Horberg; Eric Watson; Mamta Bhatia; Celeena Jefferson; Julia M. Certa; Seohyun Kim; Lily Fathi; Keri N. Althoff; Carolyn Williams; Richard Moore
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Human Immunodeficiency Virus Infection and Variation in Heart Failure Risk by Age, Sex, and Ethnicity: The HIV HEART Study

Mayo Clinic Proceedings
2022-03 | Journal article
Contributors: Alan S. Go; Kristi Reynolds; Harshith R. Avula; William J. Towner; Rulin C. Hechter; Michael A. Horberg; Suma Vupputuri; Thomas K. Leong; Wendy A. Leyden; Teresa N. Harrison et al.
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Projecting the age-distribution of men who have sex with men receiving HIV treatment in the United States

Annals of Epidemiology
2022-01 | Journal article
Contributors: Parastu Kasaie; Cameron Stewart; Elizabeth Humes; Lucas Gerace; Jinbing Zhang; Michael J. Silverberg; Michael A. Horberg; Peter F. Rebeiro; Emily P. Hyle; Viviane D. Lima et al.
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Antecedent treat-and-release diagnoses prior to sepsis hospitalization among adult emergency department patients: a look-back analysis employing insurance claims data using Symptom-Disease Pair Analysis of Diagnostic Error (SPADE) methodology

Diagnosis
2021-11-25 | Journal article
Contributors: Najlla Nassery; Michael A. Horberg; Kevin B. Rubenstein; Julia M. Certa; Eric Watson; Brinda Somasundaram; Ejaz Shamim; Jennifer L. Townsend; Panagis Galiatsatos; Samantha I. Pitts et al.
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Exploiting hierarchy in medical concept embedding*

JAMIA Open
2021-03-01 | Journal article
Contributors: Anthony Finch; Alexander Crowell; Mamta Bhatia; Pooja Parameshwarappa; Yung-Chieh Chang; Jose Martinez; Michael Horberg
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Comparison of Clinical Outcomes of Persons Living With HIV by Enrollment Status in Washington, DC: Evaluation of a Large Longitudinal HIV Cohort Study

JMIR Public Health and Surveillance
2020-04-15 | Journal article
Contributors: Jenevieve Opoku; Rupali K Doshi; Amanda D Castel; Ian Sorensen; Michael Horberg; Adam Allston; Michael Kharfen; Alan E Greenberg
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Comparison of Clinical Outcomes of Persons Living With HIV by Enrollment Status in Washington, DC: Evaluation of a Large Longitudinal HIV Cohort Study (Preprint)

2019-08-29 | Other
Contributors: Jenevieve Opoku; Rupali K Doshi; Amanda D Castel; Ian Sorensen; Michael Horberg; Adam Allston; Michael Kharfen; Alan E Greenberg
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Peer review (6 reviews for 4 publications/grants)

Review activity for AIDS and behavior. (1)
Review activity for Communications medicine. (2)
Review activity for Nature communications (2)
Review activity for Open forum infectious diseases. (1)