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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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Prefer Email? Email Dr. Viel

Accurate. Timely. Dependable.

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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

SPredictable 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.

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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.

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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.

  • 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.

  • Services may be provided in accordance with applicable regulatory frameworks, including DOT requirements when applicable.

  • Services are provided to employers, TPAs, testing programs, and other organizations requiring independent drug test result verification.

  • 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.

  • Verified results are communicated to designated parties in accordance with applicable standards and established organizational processes.

  • Yes. PRN and interim MRO support may be available depending on organizational needs.

  • 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.

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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