There is no single, centralized database of medical records in the United States. Your health information is scattered across every hospital, clinic, lab, and specialist you’ve ever visited, each storing your data in its own electronic system. Unlike countries with national health services, the U.S. relies on a patchwork of private electronic health record (EHR) systems, regional data-sharing networks, and state-level claims databases that don’t automatically talk to each other.
That said, several systems exist that pull together pieces of your medical history, and understanding how they work can help you track down your own records or make sense of why your new doctor doesn’t already have them.
Why No Central Database Exists
The U.S. healthcare system is built on competing private organizations, each choosing its own technology. Hospitals pick from dozens of EHR vendors, and whether your data follows you from one provider to another depends largely on whether those providers happen to use the same software or participate in the same data-sharing network. The current landscape has been described by health informatics researchers as “a patchwork of connectivity without a centralized national HIE approach.”
Congress has historically blocked the creation of a unique national patient identifier, which would be the foundational step toward linking all records to one person across systems. Privacy concerns and political opposition have kept that idea off the table for decades. Without a universal ID, matching records across institutions relies on name, date of birth, and address, which introduces errors and duplicates.
Countries with single-payer health systems have gotten closer to centralized records, but even they face challenges. In the UK, Wales is the only nation to achieve near-full population coverage in a primary care research database, covering about 83% of its population. England built a system called OpenSAFELY during COVID-19 that allows researchers to analyze general practice data without extracting raw patient records, but it’s a research tool, not a patient-facing database. Full population coverage in a single EHR database has proven difficult everywhere for technical, political, and legal reasons.
Where Your Records Actually Live
Your medical records sit inside the EHR system your provider uses. Two companies dominate this space. Epic holds roughly 38% of the U.S. hospital market and nearly 44% of outpatient care. Oracle Health (formerly Cerner) covers about 22% of hospitals and 25% of outpatient settings. MEDITECH holds around 13%. The remaining share is split among dozens of smaller vendors. Each system stores data in its own format and structure, and records created in one system don’t automatically appear in another.
This means a person who sees a primary care doctor on Epic, gets lab work at a facility running Oracle Health, and visits a specialist using a smaller system has three separate, disconnected records. None of these providers can see the full picture unless specific data-sharing agreements are in place.
How Data Gets Shared Between Systems
Health Information Exchanges (HIEs) are regional or state-level networks designed to bridge this gap. Funded initially through federal grants starting in 2009, these organizations let participating hospitals and clinics send and receive patient information electronically. Some HIEs cover a single metropolitan area, others span an entire state, and a few operate as “networks of networks” that link multiple HIEs together.
The technical standard making this possible is called FHIR (Fast Healthcare Interoperability Resources). It works like a common language that different EHR systems can use to package and send patient data. FHIR defines standardized data formats for things like medications, lab results, allergies, and diagnoses, so a record created in one system can be read by another. Federal regulations now require EHR vendors to support FHIR-based connections, which has accelerated data sharing over the past few years.
Still, participation in HIEs is uneven. Whether your records actually travel with you depends on the specific organizations involved, not on any guaranteed national infrastructure.
State Claims Databases
One type of centralized health data does exist at the state level. As of early 2023, 25 states operate or are implementing mandatory All-Payer Claims Databases (APCDs), with another eight states developing them. These collect medical, pharmacy, and dental claims along with enrollment and provider information from both private insurers and public programs.
APCDs are primarily used for research, cost transparency, and policy analysis rather than for clinical care. They contain billing records, not the detailed clinical notes your doctor writes. States like Colorado, Maryland, Massachusetts, Oregon, Utah, and Virginia have some of the longest-running databases. You can’t log into an APCD to view your medical history, but the data is used to study healthcare costs and outcomes across entire populations.
How to Access Your Own Records
Under federal law (HIPAA), you have the right to obtain a copy of your medical records from any provider or health plan that holds them. Providers can charge a reasonable fee for copies, but the costs are limited. For electronic records, the maximum flat fee is $6.50 per request, covering all labor, supplies, and postage. Providers cannot charge you for the time spent searching for your records, verifying your identity, or maintaining their data systems.
The most common way to view your records is through a patient portal tied to your provider’s EHR. Epic’s portal, called MyChart, is the most widely used. It lets you see test results, medication lists, visit summaries, and billing information. You can also schedule appointments, message your care team, and join video visits. Oracle Health offers similar functionality through its own portal brands. If you see providers across multiple health systems, you may need to log into separate portals for each one.
Aggregator Apps as a Personal Database
Smartphone apps now offer a way to pull records from multiple providers into one place. Apple Health Records, built into the iPhone Health app, connects to participating health systems and imports medications, vital signs, lab results, and procedures into a single view. It gathers data from each connected EHR and organizes it by category, giving you something close to a unified personal health record on your phone. Similar functionality exists on Android through apps that support FHIR connections.
These tools don’t create a true centralized database. Your data still lives in each provider’s system. But they let you see an integrated picture of your health history without calling five different offices for records. If you’ve seen providers across multiple health systems, setting up one of these apps is the closest thing to a personal medical records database currently available.
What This Means in Practice
If you’re trying to find a complete set of your medical records, you’ll need to request them from each provider individually. No single system, government agency, or private company holds everything in one place. For recent care, start with your patient portal. For older records, contact the medical records department at each facility directly. Hospitals typically retain records for at least six to ten years depending on state law, though many keep them longer in electronic form.
When switching doctors or moving to a new city, ask your current provider to send records electronically to your new one. If both are on the same EHR platform (especially Epic, given its market dominance), the transfer may happen almost automatically. If they’re on different systems, it may require a formal records release and take days or weeks. Keeping your own copies, whether through a patient portal download or an aggregator app, is the most reliable way to ensure nothing gets lost in the gaps between systems.