Primary treating physician (PTP)

What a PTP is

The primary treating physician is the doctor primarily responsible for managing the employee's care, who has examined the employee at least once to render or prescribe treatment and has monitored its effect since (8 CCR 9785). The PTP may be selected by the employer, by the employee under the Labor Code's treatment rules, or within a medical provider network. An employee has no more than one PTP at a time (8 CCR 9785(b)).

The rule

The PTP's reports carry the case between evaluations: they certify temporary disability, state work restrictions, send requests for authorization through utilization review, and eventually declare the worker permanent and stationary. If the employer has no MPN, the employee may be treated by a physician of their own choice after 30 days from reporting the injury (Labor Code section 4600(c)). A party who disagrees with the PTP's medical determination objects in writing within 20 days of receiving the report in a represented case, which leads to a QME or AME (Labor Code section 4062).

Why it matters to an applicant firm

Choosing the right PTP is one of the first strategic calls in a WC case. A PTP who documents disability periods clearly keeps TD flowing, and one who writes complete requests for authorization gives UR less reason to deny. Firms collect each PTP report as it arrives, check the TD periods it certifies against payments, and calendar the objection deadline on any report they dispute.