The History and Evolution of Telehealth in the United States

Telehealth didn't spring into existence during a pandemic — it has been quietly building for more than a century, shaped by successive waves of communication technology, federal policy, and clinical necessity. This page traces that arc from early radio experiments to the regulatory overhauls of the 2020s, explaining how each era redefined what it meant to deliver care at a distance. Understanding this trajectory matters because the rules, reimbursement structures, and clinical norms governing telehealth today are direct descendants of decisions made decades ago — some forward-looking, some deeply cautious. For a broader orientation to the field, the National Telehealth Authority provides reference coverage across the full landscape.

Definition and scope

Telehealth, as defined by the Health Resources and Services Administration (HRSA), encompasses the use of electronic information and telecommunications technologies to support long-distance clinical health care, patient and professional health-related education, public health, and health administration (HRSA Telehealth Programs). That definition is deliberately wide. It covers a live video call between a psychiatrist and a rural patient in Wyoming, a dermatologist reviewing uploaded skin images asynchronously, and a cardiac monitor transmitting real-time waveform data from a patient's chest to a hospital dashboard 300 miles away.

The scope distinction worth holding onto: telehealth is the broader category; telemedicine refers specifically to the remote delivery of clinical services by licensed providers. Telehealth also includes non-clinical functions — administrative coordination, provider training, population health surveillance. The types and modalities of telehealth span four primary delivery mechanisms: synchronous live video, asynchronous store-and-forward, remote patient monitoring, and mobile health applications.

How it works

The history of telehealth is, at its core, a history of what bandwidth was available at any given moment — and what regulators were willing to permit through it.

1920s–1950s: Radio and the idea of remote consultation
The earliest documented experiments in remote medical consultation used radio. By 1924, Radio News magazine published a speculative illustration of a "radio doctor" transmitting diagnoses over wireless. Within two decades, naval and maritime medicine had operationalized radio communication for medical guidance on ships at sea — a practical necessity, not a thought experiment.

1960s–1970s: NASA and the first clinical systems
The modern lineage traces more directly to NASA, which developed physiological monitoring for astronauts in the early 1960s. That telemetry research influenced civilian medicine. In 1967, Massachusetts General Hospital and Logan International Airport established a two-way audiovisual link to provide emergency care to airport workers — one of the first documented interactive telehealth programs in a clinical setting, as noted by the American Telemedicine Association in its historical timeline.

1980s–1990s: Institutional pilots and the rural access frame
Federal interest accelerated through the 1990s as policymakers began framing telehealth explicitly as a rural access solution. The Office for the Advancement of Telehealth was established within HRSA in 1995. Congress passed the Telecommunications Act of 1996, which included provisions directing the Federal Communications Commission (FCC) to support rural health care connectivity — a policy lineage that runs directly into the FCC's current Healthcare Connect Fund (FCC Rural Health Care Program).

2000s–2010s: Medicare entry and the reimbursement bottleneck
The Balanced Budget Act of 1997 established the first Medicare reimbursement for telehealth services — but only in federally designated rural Health Professional Shortage Areas, and only for synchronous video encounters. That geographic restriction would remain a defining constraint for nearly two decades. By 2015, CMS was covering a defined set of roughly 90 telehealth services under Medicare Part B, a list that expanded incrementally but remained tightly bounded by originating-site rules.

2020: The COVID-19 waiver period
The Public Health Emergency declared in March 2020 triggered waivers under Section 1135 of the Social Security Act that suspended the originating-site requirement, expanded eligible service types, and permitted audio-only encounters for the first time under Medicare. Telehealth utilization in Medicare jumped from approximately 840,000 visits per week before March 2020 to roughly 1.7 million visits per week by April 2020, according to a Department of Health and Human Services analysis (HHS Office of the Assistant Secretary for Planning and Evaluation, 2021). The policy architecture behind that shift is detailed in telehealth post-pandemic policy changes.

Common scenarios

The historical record maps onto specific clinical deployment patterns that have persisted across eras:

  1. Rural primary care access — connecting patients in counties with zero or one primary care physician to distant providers via live video.
  2. Telestroke and acute neurology — a model formalized in the early 2000s, where neurologists at hub hospitals evaluate stroke patients at spoke hospitals within the 4.5-hour tissue plasminogen activator (tPA) treatment window.
  3. Behavioral health — the most utilized telehealth specialty by visit volume as of 2022, per CMS claims data, owing in part to the elimination of geographic restrictions for mental health services under the Consolidated Appropriations Act of 2023.
  4. Remote patient monitoring — continuous transmission of vitals from chronic disease patients; explored in the remote patient monitoring reference section.
  5. Store-and-forward dermatology and radiology — asynchronous image review that decouples the patient encounter from the specialist's availability, detailed in store-and-forward telehealth.

Decision boundaries

The central tension in telehealth's evolution has always been the same: what requires physical presence, and what doesn't?

That question has never been answered uniformly. State medical boards apply different standards. CMS applies different standards than private payers. The telehealth vs. in-person care reference covers the clinical and regulatory criteria that currently govern the boundary. What the historical arc reveals is that the boundary has moved — consistently in one direction — each time a new communication technology proved reliable and a sufficiently large patient population demonstrated need.

The prescribing rules governing controlled substances illustrate the tension sharply. The Ryan Haight Online Pharmacy Consumer Protection Act of 2008 required an in-person evaluation before any DEA-registered practitioner could prescribe a controlled substance via telehealth. That requirement was waived during the 2020 Public Health Emergency. As of 2024, the DEA has proposed a Special Registration framework that would allow limited prescribing without an in-person visit under defined conditions — a rulemaking process tracked under telehealth prescribing rules.

The pattern holds across the full history: technology extends the boundary, regulation catches up, and a new baseline forms. The current baseline — more permissive than 2019, more structured than 2020 — is the subject of ongoing negotiation at the federal and state level, with evidence from the pandemic period informing every argument on both sides. For a current read on the utilization data shaping those negotiations, telehealth statistics and utilization data compiles the primary sources.

References