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Marianne D. Cloeren, MD, MPH

Academic Title:

Associate Professor

Primary Appointment:


Additional Title:

Associate Professor


11 S. Paca Street Baltimore, MD 21201

Phone (Primary):




Education and Training

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. 


I joined the University of Maryland School of Medicine faculty in 2017 as an Associate Professor of Medicine in the Division of Occupational and Environmental Medicine. 

In my clinical practice, I see patients with complicated return-to-work situations, including pain-related work disability and questions about fitness for duty.

I coordinate the educational rotations for residents from University of Maryland, Johns Hopkins and the Uniformed Services University of the Health Sciences, and serve as the Faculty Advisor for the UMSOM medical student special interest group for Preventive, Occupational and Environmental Medicine. I teach a novel 100-hour elective in Occupational and Environmental Medicine to preclinical medical students. I am also part of a UMB team developing an interprofessional climate change course in collaboration with UMD (College Park).

My research interests include the challenges facing individuals with opioid use disorder. In 2018 I mobilized an interdisciplinary team of researchers, which has received several grants focusing on issues related to opioids and employment.

Other research interests are risk factors for prolonged work disability, the content and quality of physician/patient communication, return-to-work and workers’ compensation policy and clinical education. A recent research project for the Maryland Department of Health evaluated the effectiveness of a short online educational module in modifying physician use of the Prescription Drug Monitoring Program. This found that this very brief online module increased use of the PDMP among study participants less familiar with it at baseline.

Research/Clinical Keywords

Disability, workers’ compensation, motivational interviewing, vocational rehabilitation, disability risk factors, perceived injustice, pain catastrophizing, opioids, work, occupation, physician communication, return-to-work, online education, e-learning, instructional design.

Highlighted Publications

Ringen K, Dement J, Cloeren M, Almashat S, Hines S, Grier W, Quinn P, Chen A, Haas S. Mortality of older construction and craft workers employed at Department of Energy (DOE) nuclear sites: Follow-up through 2021. Am J Ind Med 2024 Jan 25. Published online first.

Howard J, Cloeren M, Vanichkachorn G. Long COVID and Occupational Medicine Practice. J Occup Environ Med. 2024 Jan 1;66(1):1-5.

Dooley C, Saif NT, Hodorowicz MT, Doyle ML, Gucer PW, Edwards LA, Cloeren M. Occupational Health Providers’ Perceptions of Employee Vaccine Hesitancy. J Occup Environ Med. 2023 Oct 4:10-97. DOI: 10.1097/JOM.0000000000003006

Cloeren M, Dement J, Gaitens J, Hines S, Diaz L, Tembunde Y, Cranford K, Shorter J, Mosier T, Ringen K. Beryllium disease among construction trade workers at Department of Energy nuclear sites: A follow-up. Am J Ind Med. 2022 Sep;65(9):708-720. doi: 10.1002/ajim.23411. Epub 2022 Jul 14. PMID: 35833586.

Adenaiye O, Zirpoli JB, Tan M, Day B, Bolaji O, Mitchell CS, Cloeren M (2022). Impact evaluation of a brief online training module on physician use of the maryland, usa, prescription drug monitoring program. Plos One, 17(8), e0272217. (Accessed 9/2/23:

Zheng S, Rivera Margarin A, Connaughton P, Spanjaard H, Crispen R, Ording J, Cloeren M. The Occupational Medicine Pipeline: Report on the Results of a Survey of International Occupational Medicine Society Collaborative (IOMSC) Member Countries. Journal of Occupational and Environmental Medicine 64(3):p e165-e171, March 2022. | DOI: 10.1097/JOM.0000000000002433  (Accessed 9/2/23:

Cloeren M. Educational Training Modules for Implementing Screening Brief
Interventions and Referral to Treatment (SBIRT) in Patient Care. Maryland MedChi. Multimedia Communication. June 2019. (Accessed 9/2/23:

Cloeren M, Colameco S. Chapter 22. Preventing Avoidable Work Disability. In: Weaver M (ed.): American Society of Addiction Medicine Handbook on Pain and Addiction. Section IV: Treating Substance Use Disorders and Addiction in Patients with Co-Occurring Pain.  American Society of Addiction Medicine. New York: Oxford University Press, 2018.

Jurisic M, Christian J, Cloeren M, et al. ACOEM Position Statement: The Personal Physician's Role in Helping Patients with Medical Conditions Stay at Work or Return to Work. J Occup Environ Med 2017 59(6): e125-e131. (accessed 9/2/23: )

Drury DL, Adamo P, Cloeren M, et al. Patient Satisfaction Measurement in Occupational and Environmental Medicine Practice. J Occup Environ Med 2018 60(5): e227-e231.

Cloeren M, Adamo P, Blink R, Burress J, Galloway L, Glass L, Martin D, Mueller K, Papanek P, Peplowski B. Defining Documentation Requirements for Coding Quality Care in Workers’ Compensation. J Occup Environ Med December 2016 58(12): 1270-1275. (Accessed 9/2/23:

Cloeren M, Gean C, Kesler D, Green-McKenzie J, Taylor M, Upfal M, Hodgson M, Adamo P, Harber P, McLellan R. American College of Occupational and Environmental Medicine’s Occupational and Environmental Medicine Competencies – 2014. J Occup Environ MedMay2014; 6 (5): e22-40.

Awards and Affiliations

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 ( 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.

Grants and Contracts


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"

Community Service

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 Activity

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
    • 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


Links of Interest