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HIPAA guide

HIPAA covered entities: who counts, how a business associate differs, and who enforces HIPAA

HIPAA applies to three kinds of organization by name, and to everyone who handles patient information for them. Whether you're one of the three decides which rules you follow, who you sign agreements with, and who knocks on the door when something goes wrong.

What is a covered entity? The definition

The definition is in 45 CFR 160.103, and it names three groups. If you're in one of them, every part of HIPAA applies to you directly: the Privacy Rule, the Security Rule and the Breach Notification Rule.

  1. Health plans. Anyone that provides or pays the cost of medical care.
  2. Health care clearinghouses. Companies that convert health information between nonstandard and standard formats for someone else.
  3. Health care providers that transmit health information electronically in connection with a transaction HHS has a standard for: claims, eligibility checks, claim status, referral authorizations, remittance and the rest.

The third group is the one most practices belong to, and the condition matters. A provider becomes a covered entity by sending one of those transactions electronically, directly or through a billing service that does it for them. Once you're covered, you're covered for all of your patients, not only the ones whose claims went out electronically.

Who is a covered entity? Examples of each type

HIPAA covered entity types with examples
TypeExamplesWatch for
Health care providersPhysicians, dentists, chiropractors, psychologists and therapists, clinics, hospitals, nursing homes, pharmacies, labs, home health agenciesOnly if they send standard transactions electronically, which nearly every practice that bills insurance does
Health plansHealth insurers, HMOs, Medicare, Medicaid, Medicare Advantage plans, employer group health plans, dental and vision plansAn employer's group health plan is a covered entity; the employer itself, acting as an employer, is not
Health care clearinghousesBilling services, repricing companies and networks that translate claims between formatsA clearinghouse acting for a provider is often also a business associate of that provider

Some organizations that hold health information are not covered entities: employers keeping employment records, life insurers, workers' compensation carriers, most schools, law enforcement, and consumer health apps with no provider or plan behind them. Other laws, such as FERPA or the FTC's rules, reach some of them instead.

Is your practice a covered entity? Four questions

  1. Do you provide or pay for health care? If neither, you're not a covered entity, though you may still be a business associate.
  2. Do you, or a billing service for you, send claims, eligibility checks or other standard transactions electronically? If yes, you're a covered provider.
  3. Are you a plan? Insurers, HMOs, government programs and employer group health plans are covered. A small employer plan with fewer than 50 participants that the employer administers itself is excluded from the definition.
  4. Do you convert claims data between formats for others? That's a clearinghouse.

CMS publishes decision charts that walk through the same questions for providers, plans and clearinghouses; the link is in the sources below. For a vendor relationship rather than your own status, the Do I need a BAA? checker answers the business associate side in four questions.

A cash-only practice that never bills insurance electronically may not be a covered entity. The moment one claim goes out electronically, it is, for every patient.Your engineer

Hybrid entities: when only part of you is covered

A single legal entity can do covered and non-covered work: a university with a student health clinic, a manufacturer with an on-site clinic that bills insurers, a county that runs a hospital. HIPAA lets it become a hybrid entity by designating its health care components in writing. The rules then apply to those components, and the entity has to keep PHI from flowing to the rest of the organization as if it were a separate company. Without the designation, the whole entity is treated as covered.

Business associate vs covered entity

A covered entity is defined by what it is. A business associate is defined by what it does: it creates, receives, maintains or transmits PHI on behalf of a covered entity or of another business associate. Software companies, billing services, IT providers, cloud hosts, transcription services, consultants and shredding companies are the usual examples.

Covered entity vs business associate under HIPAA
DutyCovered entityBusiness associate
Security RuleAll of itAll of it, directly, since 2013
Privacy RuleAll of it, including the notice of privacy practices and patient rightsThe parts its BAA covers, plus the uses and disclosures the rule forbids
Breach notificationNotifies patients, HHS and sometimes the mediaNotifies the covered entity, no later than 60 days after discovery and usually sooner under the BAA
AgreementsA BAA with every business associateA BAA with each customer and with every subcontractor that handles PHI
EnforcementOCR, state attorneys general, and the Department of Justice for criminal casesThe same

One company can be both: a hospital is a covered entity, and it is also a business associate when it does billing for an affiliated practice. The vendor's side is covered in full in HIPAA for business associates.

Who enforces HIPAA?

  • The HHS Office for Civil Rights (OCR) enforces the Privacy, Security and Breach Notification Rules. It investigates complaints and breach reports, opens compliance reviews, and settles most cases with a resolution agreement and a corrective action plan.
  • CMS enforces the administrative simplification rules: the transaction and code set standards, unique identifiers and operating rules.
  • The Department of Justice takes criminal cases, such as knowingly obtaining or disclosing PHI without authorization.
  • State attorneys general can bring their own HIPAA actions on behalf of state residents, and many enforce state privacy and breach laws on top.

For a small practice the realistic path is OCR: a breach report or a patient complaint, a data request that starts with the risk analysis, and a settlement. The most common HIPAA violations are the ones those complaints describe. Recent settlements with small practices have ranged from $5,000 to $140,000. What that request looks like, step by step, is in what an OCR investigation looks like.

What a covered entity has to do

  1. Know where PHI is. Every system, device and vendor. Our explainer on what PHI is lists the eighteen identifiers and the places patient data hides.
  2. Run a risk analysis and keep it current. The free HIPAA risk assessment tool is a start.
  3. Put the Security Rule safeguards in place: administrative, physical and technical, with a named security official. The Security Rule, clause by clause sets out each one.
  4. Meet the Privacy Rule: a privacy official, a notice of privacy practices, patient access and amendment, and the minimum necessary standard.
  5. Sign a BAA with every business associate before it gets PHI.
  6. Train the workforce and keep a record per person.
  7. Be ready for a breach: an incident plan and the 60-day notification clock.
  8. Keep the documentation for six years.

Work through the full list in the HIPAA compliance checklist, and keep it current between reviews with HIPAA compliance software that tracks each item for you. Templates for a patient authorization form and a BAA review are on our free templates page.

With AccuSights: we work out with you whether you're a covered entity, a business associate or both, map every system, device and vendor that holds PHI, and keep the business associate inventory with each agreement, owner and renewal date. Your named engineer writes the risk analysis with you and fixes what it finds.

Quick questions

What is a HIPAA covered entity?
A health plan, a health care clearinghouse, or a health care provider that transmits health information electronically in connection with a standard transaction such as a claim. The definition is in 45 CFR 160.103.
What are the three types of covered entities?
Health care providers that bill or check eligibility electronically, health plans, and health care clearinghouses.
Is a business associate a covered entity?
No. A business associate handles PHI on behalf of a covered entity. Since 2013 it is directly liable under the Security Rule and parts of the Privacy Rule, but it is not a covered entity unless it also provides or pays for care.
Who enforces HIPAA?
The HHS Office for Civil Rights enforces the Privacy, Security and Breach Notification Rules. CMS enforces the transaction and code set rules, the Department of Justice handles criminal cases, and state attorneys general can bring civil HIPAA actions.
Are all doctors covered entities?
Almost all are, because almost every practice that bills insurance sends claims electronically. A provider that never sends a standard transaction electronically, directly or through a billing service, is not a covered entity.
Is an employer a HIPAA covered entity?
Not as an employer. An employer's group health plan is a covered entity, and the employer has duties when it administers the plan, but employment records such as sick notes held by HR are not PHI under HIPAA.

Sources

Definitions and enforcement roles on this page were checked against these in October 2026. Regulations change, so confirm before you rely on them.

  1. 45 CFR 160.103, definitions (eCFR)
  2. HHS: covered entities and business associates
  3. CMS: are you a covered entity?
  4. HHS: business associates
  5. HHS Office for Civil Rights: compliance and enforcement
  6. 45 CFR Part 160 Subpart D, civil money penalties (eCFR)

Written by the AccuSights compliance team and updated October 2026. Figures are quoted from the sources named here and were current when checked. This page is general information, not legal advice.

Next step

Not sure which side of HIPAA you're on?

Thirty minutes with a compliance engineer: covered entity, business associate or both, which rules apply, and a fixed fee in writing for the program.

The regulator has the final say. We help interpret, scope and get you ready; we do not certify.

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