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Med Fusion managed care partners

Med Fusion is proud to participate in a number of managed care plans throughout the country. To view a list of our current managed care partners, please click here.

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Order tests using our Physician’s Portal

Click to order

Client Services:
Phone: 1.972.966.7300 or 1.855.500.8535
Email: clientservices@medfusionsvs.com
Client Services Hours: 24/7/365

Billing Customer Service:
Phone: 1.972.966.7080 or 1.888.385.2154
Fax: 1.972.966.7227
Email: billing@medfusionsvs.com
Hours of operation: Monday – Friday, 8:00 AM – 5:00 PM (CT)

Clinical Trials
Phone: 1.972.966.7600 or 1.844.361.9641
Email: Clinical-Trials@medfusionsvs.com

Solid Tumor Hotline
The US Oncology Network and Texas Oncology Dedicated Hotline
Phone: 1.972.966.7050 or 1.844.966.7050

Hematopathology Hotline
Phone: 1.877.384.9893

How to Order links

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Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services. Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services.

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.