Medical Review Officer (MRO) Services
Board-certified physician providing independent, compliant review and verification of drug and alcohol testing results for employers, TPAs, and testing programs.
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Accurate. Timely. Dependable.
Who We Work With
We provide MRO services for organizations and testing partners requiring reliable, compliant review of drug and alcohol testing results.
Services are provided to organizations and testing partners seeking accurate, timely, and defensible MRO support. We work with employers, third-party administrators (TPAs), and testing programs to ensure appropriate result verification and clear communication within established workflows.
Organizations We Support
Employers and HR departments
Third-party administrators (TPAs)
Drug testing programs and consortiums
Laboratories and collection networks
Treatment programs utilizing drug testing services
Scope of MRO Services
We provide Medical Review Officer services focused on accurate verification, appropriate clinical interpretation, and compliance with applicable regulatory frameworks, including DOT requirements when applicable.
Result Review & Verification
Review and verification of negative and non-negative test results
Donor interviews for non-negative, refusal-to-test, or invalid results
Determination of verified results in accordance with applicable regulations and employer policies
Clinical Interpretation
Medical evaluation of laboratory findings in clinical context
Assessment of legitimate medical explanations for test results
Clear, defensible medical determinations
Communication & Documentation
Timely reporting of verified results to designated employers or TPAs
Clear documentation of determinations and supporting rationale
Availability for clarification or follow-up as appropriate
Workflow Integration
Coordination with laboratories, TPAs, and collection sites
Alignment with existing workflows and reporting structures
Defined communication processes to support efficiency and consistency
Independent, Compliant, and Clinically Informed
MRO services require both regulatory knowledge and clinical judgment. The MRO functions as an independent medical reviewer responsible for objective interpretation and verification of drug and alcohol testing results.
Services are provided with attention to accuracy, documentation, and defensibility, while maintaining independence from treatment, prescribing, and employment decision-making.
Operational Approach
-Structured to support timely review and consistent turnaround
-Responsive communication with employers, TPAs, and testing partners
-Integration with existing laboratory and program workflows
-Clear documentation and standardized reporting processes
-Scalable to accommodate varying testing volumes
-Independent, physician-led review and determination
Engagement Models
MRO services are structured based on testing volume, program design, and workflow requirements. Flexible service models are available to align with both small and large programs.
Per-Test (Volume-Based) Services
Services structured on a per-test basis, with pricing aligned to testing volume, program complexity, and the proportion of non-negative results.
Monthly or Fixed-Fee Arrangements
Predictable monthly or bundled pricing structures for organizations with consistent testing volume or established programs.
Scalable Program Support
Services designed to support both small organizations and larger, multi-site or high-volume programs, with the ability to scale based on demand and operational needs.
Program Setup & Consultation
Consultation available for organizations establishing or refining drug and alcohol testing programs, including workflow design, communication processes, and integration with MRO services.
PRN & Supplemental Coverage
Flexible support for temporary coverage needs, overflow volume, or gaps in existing MRO services.
Dr. Stephen Viel
Services are provided by Dr. Stephen Viel MD, a board-certified physician in both Addiction Medicine and Emergency Medicine, with extensive experience in clinical care, medical leadership, and healthcare operations.
Dr. Viel brings a pragmatic, patient-centered approach informed by years of frontline emergency medicine practice and community-based addiction care.
Prefer Email? Email Dr. Viel
Schedule a Call
If you’d like to discuss your organization’s needs or explore whether MRO services may be appropriate, you may schedule a call directly with Dr. Viel using the calendar.
Prefer Email? Send Dr. Viel an email at Stephen.Viel@ShorelineMAT.com.
Frequently Asked Questions
The following questions address common considerations related to MRO services, including workflow, communication, and regulatory alignment. Services are structured to integrate with existing testing programs and support timely, consistent result review. If you have additional questions or would like to discuss your program directly, you’re welcome to schedule a call.
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An MRO is a licensed physician responsible for reviewing and verifying drug test results, including determining whether there is a legitimate medical explanation for a positive result.
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Services may be provided in accordance with applicable regulatory frameworks, including DOT requirements when applicable.
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Services are provided to employers, TPAs, testing programs, and other organizations requiring independent drug test result verification.
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MRO services are typically structured based on testing volume, workflow design, and reporting requirements. Services may be configured to align with existing laboratory or TPA processes and may vary depending on the proportion of non-negative results and overall program complexity.
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Verified results are communicated to designated parties in accordance with applicable standards and established organizational processes.
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Yes. PRN and interim MRO support may be available depending on organizational needs.
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MRO services are available to organizations throughout the United States. Services are provided remotely and structured to align with applicable regulatory requirements, including DOT standards when applicable.
Additional Professional Services
We provide physician-led addiction medicine consulting services for treatment programs, employers, and legal professionals.
Our work spans medical director services, independent evaluations, program consulting, and clinical peer review—grounded in clinical expertise, ethical rigor, and a practical understanding of real-world operational and regulatory needs.
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We provide physician medical director services for addiction treatment programs seeking an engaged physician partnerwith practical clinical and operational experience.
Services may include:
Clinical protocol development and review
Medication-assisted treatment (MAT) guidance
Support for program certifications (including CARF and similar accreditation standards)
Policy development and compliance support related to substance use treatment services
Case consultation and collaboration with clinical and administrative teams
Support for program development and expansion
Availability for ongoing, interim, or PRN medical director roles
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We provide independent substance use evaluations grounded in clinical expertise and ethical rigor, with a clear separation from treatment.
Our services support organizations and professionals who require objective, defensible medical opinions related to substance use, impairment, and risk.Services may include:
Fitness-for-duty and return-to-work evaluations
Substance use and impairment risk assessments
Evaluations for legal, employment, or professional purposes
Written reports suitable for administrative or legal review
Collaboration with attorneys, employers, and other stakeholders as appropriate
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We provide consulting and peer review support for organizations developing, managing, or refining substance use–related policies, clinical services, and quality oversight processes.
Services may include:
Development and review of workplace drug and alcohol policies
Guidance on substance use monitoring programs
Support for integrating addiction-related services into existing programs
External clinical peer review and documentation feedback
CARF readiness and accreditation-related consultation
Consultation on regulatory, compliance, and clinical quality considerations
Education and collaboration with leadership and staff
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Build a workplace that is both drug-free and recovery-friendly with physician-led support for employee substance use concerns. Shoreline provides independent employee evaluations, MRO services, drug and alcohol monitoring, reasonable-suspicion consultation, return-to-work guidance, and broader workplace program support to help employers respond with clear expectations, appropriate accountability, and a practical path forward.
Independent Evaluation & Consulting Services
Physician-led, non-treatment services provided for legal, employment, administrative, and compliance-related matters.
All services offered on this page are independent and non-treatment in nature. Engagement does not establish an ongoing physician-patient relationship. Services are conducted remotely unless otherwise specified.
For treatment services or clinical care, please visit the Shoreline Medical Addiction Treatment website.
You can reach Dr. Viel directly by email at Stephen.Viel@ShorelineMAT.com.
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