I graduated from the University of Pennsylvania with a B.A. in Biology and German and received my M.D. at Temple University School of Medicine in Philadelphia. I trained in Internal Medicine at Johns Hopkins Bayview when it was still called Francis Scott Key Hospital, and then earned a Master of Public Health as part of my Occupational Medicine residency at Johns Hopkins School of Hygiene and Public Health. I also have a certificate in Instructional Design from the University of Wisconsin. I am board certified in Internal Medicine and Occupational Medicine. 

My work focuses on improving worker health through medical education, research, public health, clinical innovation, and international collaboration.

At the University of Maryland, I developed and direct a unique 100-hour Occupational and Environmental Medicine elective for first- and second-year medical students that integrates occupational and environmental health into organ system-based medical education through case discussions, workplace visits, and experiential learning.

I co-founded and co-lead PROSPER (Partners in Research on Opioids, Substance Use, Psychological Health, Employment and Recovery), an interdisciplinary research and implementation initiative focused on the intersection of work, behavioral health, and recovery. Through partnerships with Maryland state agencies, employers, labor organizations, and community organizations, we develop, implement, and evaluate practical workplace interventions—including overdose prevention, naloxone distribution, recovery-friendly workplace initiatives, and employer education—to improve worker health and workplace safety.

My research and program development include occupational disease prevention, worker health surveillance, work disability prevention, workplace mental health and substance use, research biosafety, and the integration of occupation and industry information into electronic health records to improve patient care, research, and public health.

As National Medical Director of the Building Trades National Medical Screening Program (BTMed), I work with multidisciplinary teams to advance the early detection and prevention of occupational disease among current and former U.S. Department of Energy construction workers.

I am committed to expanding access to high-quality occupational and environmental health education worldwide through online learning, global partnerships, and the thoughtful application of artificial intelligence and clinical informatics. My goal is to help build the global occupational and environmental health workforce by developing practical educational resources, mentoring emerging leaders, and fostering international collaboration.

Occupational medicine, global worker health, medical education, online education, e-learning, instructional design, clinical informatics, artificial intelligence, electronic health records, return-to-work, work disability prevention, workers' compensation, physician communication, workplace mental health, substance use, overdose prevention, implementation science.

Saif NT, Elghannam M, Diaz L, Hodorowicz MT, Doyle ML, Baumer S, Girmay T, Edwards LA, Gucer PW, Cloeren M. Evaluation of an Online Training Course in Motivational Interviewing for Occupational Health Clinicians to Address Vaccine Hesitancy. J Occup Environ Med. 2025 Aug 1;67(8):e525-e535. doi: 10.1097/JOM.0000000000003405. Epub 2025 Mar 27. PMID: 40165505.

Ringen K, Dement JM, Cloeren M, Almashat S, Grier W, Hines S, Welch LS, Cranford K, Haas S, Quinn P, Chen A, Fisher M. Impact of Secondary Prevention on Mortality in the Building Trades National Medical Screening Program: Effectiveness of Occupational High-Risk Management. Am J Ind Med. 2026 Apr;69(4):241-253. doi: 10.1002/ajim.70052. Epub 2026 Jan 6. PMID: 41496003; PMCID: PMC12981205.

Ringen K, Dement JM, Almashat S, Cloeren M, Grier W, Hines S, Welch LS, Cranford K, Shorter J, Quinn P, Chen A. Evaluation of Early Lung Cancer Detection in a Population at High Risk due to Occupation. Am J Ind Med. 2026 Feb;69(2):102-114. doi: 10.1002/ajim.70041. Epub 2025 Dec 8. PMID: 41360702.

Cloeren M, Dement J, Quackenbush J, Quinn P, Ringen K. Is Work-Related Hearing Loss Associated With Dementia? Evidence From a High-Risk Population. Am J Ind Med. 2025 Nov;68(11):1013-1027. doi: 10.1002/ajim.70026. Epub 2025 Oct 3. PMID: 41039914; PMCID: PMC12512089.

Frey JJ, Unick GJ, Phillips DR, Imboden R, Mosby A, Ware OD, Mitchell CS, Cloeren M. Opioid-Related Overdose Deaths in Maryland (2018), by Industry and Occupation. J Occup Environ Med. 2024 Jun 1;66(6):495-500. doi: 10.1097/JOM.0000000000003092. Epub 2024 Mar 14. PMID: 38489404.

2002    Excellence in Federal Career, Rookie of the Year (Professional), Federal Executive Board

2004    Commander’s Award for Civilian Service, Department of the Army. Distinguished service from 14 May 2003 to 13 May 2004, as a Medical Officer and Educator, Directorate of Occupational and Environmental Medicine, U.S. Army Center for Health Promotion and Preventive Medicine (USACHPPM, now the U.S. Army Public Health Command).

2012     US Distance Learning Association Bronze Award for Best Practices in Distance Learning, US Distance Learning Association, Department of VA Learning University and Booz Allen Hamilton. Subject Matter Expert for the case-based course: Department of Defense (DoD) Integrated Disability Evaluation System (IDES) Training Curriculum. 

2013    Outstanding Group Achievement Award, American College of Occupational and Environmental Medicine (ACOEM), to recognize the work of committees, councils, sections or other volunteer groups within ACOEM for an outstanding group achievement over the past year, for the Council on OEM Practice, chaired by Dr. Cloeren.

2017    Outstanding Achievement Award, ACOEM, for the Task Force on Documenting Quality Care in Workers’ Compensation, chaired by Dr. Cloeren.

2019    Outstanding Coach Award from Thread (thread.org) for my role as "Grandparent" in the Frederick Douglass High School community. Thread  engages underperforming high school students confronting significant barriers outside of the classroom by providing each one with a family of committed volunteers and increased access to community resources. 

2023    Meritorious Service Award, ACOEM.

2025    Special Mention, UK Society of Occupational Medicine. Outstanding Contribution to the Development of OH Globally

Grants

4/3/17 – Present          Department of Veterans Affairs, Co-Investigator (PI: Melissa McDiarmid),  “Depleted Uranium Follow-up Program” (DU)                       

12/15/17 – 6/30/19     Maryland Department of Health, PI, “Evaluation of Online Training on Provider Use of the Maryland PDMP”

6/1/19 – 5/30/20         Accelerated Translational Incubator Pilot (ATIP) Award from the UMB  Institute for Clinical and Translational Research (ICTR), Lead PI,  “Operation PROSPER: Peer Reintegration and Other Services Promoting Employment in Recovery”

5/1/19 ­– 4/30/20          Center for Addition Research, Education, and Service (CARES), Science to Systems Grant (SSG) program, Co-PI, “Operation PROSPER: Measuring Employment Readiness in Adults Receiving Medication Assisted Treatment for Opioid Use Disorder.”

7/1/20 – 11/30/22        Maryland Department of Health, Lead PI, "Workplace PROSPER: Partnering to Reduce Opioid Stigma and Promote Employment in Recovery”    

8/25/21 – 6/30/23        Innovations in Recovery through Infrastructure Support (IRIS), PI, "Potential Role of Online Skills Preparation for Employment in Recovery (PROSPER/Online Skills)”

 7/1/22 – 6/30/22         UMB Institute for Clinical & Translational Research (ICTR), Community-Engaged Research (CEnR) Grant, PI, “Online Training in Motivational Interviewing for Occupational Health Providers to Address Vaccine Hesitancy Among Employees”

7/1/23 – 6/30/24           Maryland Opioid Operational Command Center, Lead PI, "Decreasing Opioid Overdoses by Increasing Naloxone Distribution to Maryland Construction Workers”

8/15/23 – 8/14/24          UMB President's Global Impact Fund, PI, “Building an International OEM Mutual Education (BIOME) Community”

11/1/23 – 6/30/2026      Maryland Department of Health, Lead PI for "Workplace PROSPER: Partnering to Reduce Opioid Stigma and Promote Employment in Recovery"

5/01/26 – 4/30/27          University of Maryland, Baltimore (UMB) Institute for Clinical & Translational Research (ICTR) Community-Engaged Research, PI. "Workplace PROSPER: Potential Role for Online Stigma Prevention Education for Recovery in the Workplace"

9/1/26 – 6/30/2027        Maryland Department of Health, Behavioral Health Administration, ACCESS grant, Co-PI, “Workplace PROSPER: Partnering to Reduce Overdoses through Security Preparedness, Education, and Referrals”

Volunteer internal medicine services for uninsured patients at Shepherd’s Clinic, 2014 to present.

“Grandparent” role in Thread, coordinating the efforts of 32 volunteers supporting eight city high school students, March 2018-October 2020.

Professional Organizations

• American College of Occupational and Environmental Medicine (ACOEM)
  • 2009-2015        ACOEM Board of Directors. Served as a member of the following committees: Strategic Planning, Finance and Audit, House/Board Liaison Committees, Membership, Opioid Task Force
  • 2011-2016        Chair, ACOEM Council on OEM Practice. Led the development of the revised OEM competencies statement published in 2013.
  • 2016-2022        Member ACOEM Council on OEM Practice.
  • 2013-2018        Chair, Task Force on Documenting Quality Care in Workers’ Compensation. (See www.betterworkcompcare.org.)
  • 2014-2024        Member, ACOEM Council on Education and Academic Affairs
  • 2023 - 2024      Chair, ACOEM Direct Education Programs Oversight Committee
• American College of Physicians
  • Fellow
  • 2017-present  Member, Maryland Chapter, Health and Public Policy Committee
• International Occupational Medicine Society Collaborative
  • 2023-Present    Chair, Education Committee
• Workplace Health Without Borders, member since 2023
• Maryland MedChi
  • 2018-Present    Member, Opioids, Pain and Addiction Committee

Operation PROSPER and Workplace PROSPER

Connect with me: https://www.linkedin.com/in/mariannecloeren/