Tether Supervision
Tether Supervision is a Houston-based telehealth company providing real-time virtual and on-site physician supervision for contrast-enhanced CT and MRI procedures at outpatient imaging centers across all 50 U.S. states, serving 85+ centers with a network of 125+ credentialed radiologists.
- Company typePrivate
- Founded2023
- HeadquartersHouston, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Tether Supervision does
Tether Supervision is a tech-enabled healthcare services company that provides real-time virtual and on-site physician supervision for contrast-enhanced CT and MRI procedures at outpatient imaging centers. Founded in 2023 and headquartered in Houston, Texas (legally operated as Contrast Coverage Texas, PLLC), the company serves 85+ imaging centers across all 50 U.S. states with a network of 125+ board-certified and board-eligible radiologists and physicians, having accumulated 45,000+ hours of supervised contrast procedures. Customers include independent diagnostic testing facilities, outpatient imaging centers, multi-center imaging networks, and hospital outpatient departments, with particular emphasis on rural and underserved geographies facing radiologist shortages.
The company's core offering is a purpose-built, HIPAA-compliant supervision platform featuring real-time audio-video communication, integrated with a Mobile Contrast Unit (MCU) — plug-and-play hardware with HD cameras, emergency controls, and secure connectivity. Adjacent platform capabilities include a one-touch emergency alert system with multi-channel escalation, incident logging and monthly QA reporting, integrated technologist checklists and protocol guidance, and TLS 1.3 / AES-256 / MFA-based security architecture (SOC 2 Type II compliant). Beyond the core platform, Tether sells on-site physician placement, physician-led contrast reaction training, standardized medication kits, and has expanded into general supervision, pulmonary rehabilitation supervision, cardiac rehabilitation supervision, and infusion supervision.
Tether generates revenue primarily through multi-year subscription contracts with imaging centers, with custom pricing based on coverage hours, supervisor credentials, physician-to-center ratios, and clinical coverage model. Additional revenue comes from hardware sales (MCU units, medication kits) and professional services (training, on-site placement). Distribution is executed through an enterprise field sales motion targeting imaging centers, radiology groups, and hospital outpatient departments, supplemented by an inside sales function, event-driven marketing (RSNA, RBMA), and direct website lead capture. The company operates exclusively in the United States and reports no external institutional funding, parent company, or public listing.
Tether Supervision firmographics
Firmographics- Name
- Tether Supervision
- Legal name
- Contrast Coverage Texas, PLLC
- Website
- https://tethersupervision.com
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Tether Supervision is a Houston-based telehealth company providing real-time virtual and on-site physician supervision for contrast-enhanced CT and MRI procedures at outpatient imaging centers across all 50 U.S. states, serving 85+ centers with a network of 125+ credentialed radiologists.
- Ownership category
- akta.pro rank
Tether Supervision industry classification
Industry- Product category
- Radiology Supervision Services
- NAICS
- Diagnostic Imaging Centers (621512)
- SIC
- Services-Offices & Clinics Of Doctors Of Medicine (8011)
- akta.pro primary industry
- Virtual Specialty Care Platforms (tele-stroke, tele-ICU, tele-derm, tele-cardiology) (HLALABAD)
- akta.pro secondary industry
- Remote Therapeutic Monitoring (RTM) & Digital Rehabilitation Platforms (HLALABAK)
Keywords
Where Tether Supervision is headquartered
LocationHeadquarters
- HQ city
- Houston
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Tether Supervision business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Supply Chain
Revenue model
- Virtual Contrast Supervision Services: Recurring subscription-based coverage model with custom pricing based on coverage hours, supervisor credentials (board-certified vs board-eligible radiologist), physician-to-center ratios, and clinical coverage model (virtual vs on-site vs hybrid). Revenue is generated through contracted supervision hours billed typically on a per-hour or per-center basis.
- On-Site Contrast Supervision: Placement of credentialed physicians, radiologists, nurses, or APPs at imaging facilities for dedicated in-person coverage, priced based on shift hours and credential level.
- Contrast Reaction Training: Physician-led in-person and online training programs for technologists covering contrast administration, reaction management, and emergency protocols. Includes course completion certificates.
- Contrast Reaction Medical Kits: Pre-assembled, standardized medication kits including epinephrine auto-injectors, antihistamines, corticosteroids, vital monitoring tools, and emergency medications for contrast reaction management.
- Mobile Contrast Unit (MCU) Hardware: Sale or deployment of purpose-built mobile supervision hardware units with integrated video, audio, and emergency response systems.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Supervising Physician (Contract) |
| Subscription | Multi-year contract | Virtual Contrast Supervision |
| Subscription | Multi-year contract | On-Site Contrast Supervision |
| Other | Annual | Fullstack Software Engineer (Employee) |
| Other | Annual | Sales Account Executive (Employee) |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Tether Supervision product offering
Product offeringCore offering
Tether Supervision delivers real-time virtual direct supervision for contrast-enhanced CT and MRI procedures by connecting outpatient imaging centers to a national network of 125+ credentialed physicians and radiologists through a HIPAA-compliant audio/video platform paired with proprietary Mobile Contrast Unit (MCU) hardware. Its offering bundles continuous physician oversight, on-site physician placement, emergency reaction kits, technologist training, and CMS/ACR compliance documentation into multi-year subscription contracts. Supporting services include general supervision and virtual oversight for pulmonary, cardiac, and infusion rehabilitation programs.
Product overview
Tether Supervision is a telehealth platform offering virtual and on-site contrast supervision services for outpatient imaging centers. The core offering consists of the Virtual Contrast Supervision platform (real-time HIPAA-compliant audio/video supervision) and On-Site Contrast Supervision (in-person physician placement), supported by the Mobile Contrast Unit (MCU) hardware/software platform. Additional services include Contrast Reaction Training (ACR-aligned technologist education), Contrast Reaction Medical Kit (emergency medication supplies), General Supervision, Pulmonary Rehabilitation Supervision, Cardiac Rehabilitation Supervision, and Infusion Supervision. The company operates across all 50 U.S. states, serving 85+ imaging centers with a network of 125+ credentialed physicians and radiologists.
Differentiator
Problem solved
Functional benefit
Products and services
- Virtual Contrast Supervision Real-time virtual direct supervision platform that connects imaging centers to board-certified radiologists via HIPAA-compliant two-way audio/video for continuous oversight of contrast-enhanced CT and MRI procedures. Designed for outpatient imaging centers, IDTFs, and radiology practices needing compliant supervision coverage.
- On-Site Contrast Supervision In-person physician presence service that places fully licensed, board-certified physicians, nurses, or APPs at imaging facilities for immediate bedside oversight of contrast-enhanced CT and MRI exams. Suited to centers requiring dedicated on-location staff.
- Mobile Contrast Unit (MCU) Plug-and-play hardware unit with HD audio/video, emergency controls, secure connectivity, and integrated supervision software designed for real-time contrast supervision workflows at imaging centers.
- Contrast Reaction Training Physician-led in-person and online training program covering contrast administration, reaction management, ACR-aligned curriculum, emergency protocols, and medication administration for radiology technologists, with course completion certificates.
- Contrast Reaction Medical Kit Pre-assembled, standardized emergency medication kit containing epinephrine auto-injectors, antihistamines, corticosteroids, vital monitoring tools, and emergency medications to support consistent, ready-to-deploy contrast reaction management at imaging centers.
- General Supervision CMS-aligned general supervision service that allows supervising physicians to review imaging procedures, approve protocols, and support clinical staff without requiring immediate physical presence.
- Pulmonary Rehabilitation Supervision Virtual direct supervision service supporting safe, consistent pulmonary rehabilitation sessions through real-time clinician availability and oversight.
- Cardiac Rehabilitation Supervision Real-time clinician presence supervision for cardiac and intensive cardiac rehabilitation programs, supporting recovery, safety, and consistent clinical oversight.
- Infusion Supervision Real-time infusion supervision service supporting cardiac care, chronic disease management, and intensive cardiac rehab programs with continuous clinician oversight.
Quantifiable outcome
- +31% increase in contrasted scan volume for customer imaging centers
- +5 more outcomes
Companies that use Tether Supervision
Customer profileNamed customers6 records
Segments4 records
Ideal customer profiles4 records
Tether Supervision technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Tether Supervision partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- American Society of Radiologic Technologists (ASRT)coreTether Supervision partnered with ASRT to develop a Contrast Reaction Management Series for Radiologic Technologists. This educational content series is designed to enhance technologist training in recognizing, managing, and escalating contrast reactions in CT and MRI environments. The partnership leverages ASRT's professional membership reach and Tether's clinical expertise in contrast supervision.
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
Tether Supervision competitors and assessment
Company assessmentBroad incumbents
- RadNet: RadNet is the largest US outpatient imaging center operator with ~370 centers. It is a key customer/competitor for Tether, serving the same outpatient imaging market and increasingly deploying remote radiologist workflows that overlap with Tether's supervision offering.
- Radiology Partners: Radiology Partners is the largest US radiology group with extensive teleradiology infrastructure and thousands of contracted radiologists. It is the dominant incumbent in remote radiology coverage and could either partner with or directly compete against Tether in the outpatient supervision segment.
- US Radiology Specialists: US Radiology Specialists is a large multi-state radiology group and imaging center operator. It is comparable as both a potential customer of Tether's virtual supervision and a competitor with in-house radiologist coverage that could be deployed remotely.
- Included Health: Included Health (formerly Doctor On Demand + Grand Rounds) is a large virtual care platform offering employer-sponsored specialty consultations. It represents a broad incumbent with the capital and brand to enter specialty supervision niches like radiology if the market proves attractive.
- Amwell: Amwell is one of the largest enterprise telehealth platforms serving health systems, payers, and employers. It is comparable as a broad incumbent telehealth infrastructure provider that could expand into radiology supervision through enterprise partnerships with health systems.
Direct peers
- Wheel: Wheel is a telehealth physician staffing and clinical workforce platform that matches clinicians to virtual care opportunities. It is directly comparable to Tether in deploying 1099 physicians to deliver contracted virtual clinical services, though Wheel is more general-purpose rather than radiology-specialized.
- Access TeleCare: Access TeleCare provides specialty telehealth services including tele-ICU, tele-stroke, tele-hospitalist, and tele-psychiatry to hospitals. It is a directly comparable specialty virtual care platform serving provider organizations, the same model Tether applies to imaging centers.
- SteadyMD: SteadyMD operates a national telehealth physician network and clinician staffing infrastructure serving virtual care providers. It is comparable as a telehealth workforce platform connecting contracted physicians to virtual clinical coverage, similar to how Tether recruits and deploys supervising radiologists.
- Akumin: Akumin is a national outpatient imaging center operator with hundreds of sites requiring contrast supervision. It is directly comparable as a Tether customer profile and could either scale Tether's deployment or develop an in-house virtual supervision alternative.
Emerging players
- Equum Medical: Equum Medical provides telehealth specialty services (tele-ICU, tele-hospitalist, tele-emergency) to hospital systems. It is comparable as a specialty virtual care staffing platform, though focused on inpatient acute care rather than outpatient imaging.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Tether Supervision social profiles
Digital presenceTether Supervision compliance and trust
Trust signalCompliance2 records
Tether Supervision financial estimates
Financial estimateRevenue estimate
Valuation estimate
Tether Supervision leadership team
Management profileNumber of profiles
Profiles1 record
Tether Supervision funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Tether Supervision M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Tether Supervision
What does Tether Supervision do?
Tether Supervision delivers real-time virtual direct supervision for contrast-enhanced CT and MRI procedures by connecting outpatient imaging centers to a national network of 125+ credentialed physicians and radiologists through a HIPAA-compliant audio/video platform paired with proprietary Mobile Contrast Unit (MCU) hardware. Its offering bundles continuous physician oversight, on-site physician placement, emergency reaction kits, technologist training, and CMS/ACR compliance documentation into multi-year subscription contracts. Supporting services include general supervision and virtual oversight for pulmonary, cardiac, and infusion rehabilitation programs.
Is Tether Supervision a public or private company?
Tether Supervision is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Tether Supervision founded?
Tether Supervision was founded in 2023. It employs 11 to 50 people.
Where is Tether Supervision based?
Tether Supervision is headquartered in Houston, United States, in the North America region.
How does Tether Supervision make money?
Five revenue lines are on record. Virtual Contrast Supervision Services are the primary driver. The others are on-Site Contrast Supervision, contrast Reaction Training, contrast Reaction Medical Kits and mobile Contrast Unit (MCU) Hardware.
Who are Tether Supervision's main competitors?
Broad incumbents on record are RadNet, Radiology Partners, US Radiology Specialists, Included Health and Amwell. Direct peers are Wheel, Access TeleCare, SteadyMD and Akumin. Equum Medical is listed as an emerging player.
Does Tether Supervision have an API?
No public API is recorded for Tether Supervision.
What industry is Tether Supervision in?
Tether Supervision's product category is Radiology Supervision Services. Its primary akta.pro industry code is HLALABAD, Virtual Specialty Care Platforms (tele-stroke, tele-ICU, tele-derm, tele-cardiology), with a secondary code of HLALABAK, Remote Therapeutic Monitoring (RTM) & Digital Rehabilitation Platforms. Its NAICS code is 621512 and its SIC code is 8011.