A chronology of the investigation One doctor, years of warning signs

An employee of Dr. Carlos Estiandan tells a Medical Board of California investigator that the doctor will give drug-addicted patients “anything they want.”

Robin Hollis, a medical board investigator, launches an inquiry.

A California Highway Patrol officer pulls over a motorist on the Harbor Freeway and finds dozens of blank and filled-in prescription forms, some from Estiandan’s prescription pads.

A Costco pharmacist in Los Angeles complains to the U.S. Drug Enforcement Administration about Estiandan’s prescription writing and says he has stopped filling the doctor’s prescriptions.

An undercover sheriff’s narcotics officer poses as a patient and sees Estiandan, who prescribes Vicodin, Soma, Valium and narcotic cough syrup.

DEA agents stop a man in Albuquerque, N.M., with more than 1,800 painkiller and anti-anxiety pills and six one-pint bottles of narcotic cough syrup. The labels identify Estiandan as the prescribing doctor.

Police in Ontario seize a package containing bottles of narcotic cough syrup destined for Tennessee, some listing Estiandan as the prescribing doctor.

Los Angeles County sheriff’s deputies arrest a woman with 46 prescriptions written by Estiandan, along with pills and narcotic cough syrup.

Andrew Corless, a patient, calls Estiandan’s office and leaves a message asking the doctor to “please not see him anymore.” Hours later, he calls with a message “to disregard” the earlier call.

Border Patrol agents in Texas seize 61 bottles of narcotic cough syrup from a woman from Long Beach. Some list Estiandan as the prescriber.

Pamela Stone, 54, dies of an accidental overdose of multiple drugs, including an anti-anxiety medication prescribed by Estiandan.

Andrew Corless, 46, dies of drug and alcohol intoxication. Estiandan prescribed two drugs found in his system.

Authorities, including a medical board investigator, serve a search warrant at Estiandan’s home and offices.

A medical board investigator interviews Leslie Greenberg, the girlfriend of Andrew Corless. She had complained to the board about Estiandan’s prescribing.

A medical board investigator learns that prescriptions written by Estiandan are being filled in Kentucky.

A DEA agent runs Estiandan’s name through DEA databases. Results show that in March 2007, he was the No. 1 prescriber in Southern California, Nevada and Hawaii, and No. 5 in the nation, of controlled substances for cash.

Joyce Saldivar, 55, an Estiandan patient, dies of an overdose.

A medical board expert files an opinion stating that Estiandan’s “extreme departures from the standard of practice” contributed to Andrew Corless’ death.

A second board expert says Estiandan is unable to distinguish between a patient with chronic pain and an addict.

Wilma Jones, 47, an Estiandan patient, dies of pneumonia, with use of hydrocodone and other drugs as contributing factors. Estiandan had prescribed hydrocodone for Jones.

Authorities interview a man arrested with 19 bottles of narcotic cough syrup. He says he visited Estiandan monthly and sold prescriptions he obtained.

Jimmy Miller, 29, chokes to death on his own vomit while intoxicated on three drugs, two of which Estiandan had prescribed.

Estiandan tells a coroner’s investigator he warned Jimmy Miller the drugs he was taking were potentially addictive.

Estiandan patient Christopher Quint, 39, dies of an accidental overdose.

Alexandre Dergan, 48, dies of an accidental overdose of alcohol and hydrocodone, which Estiandan had prescribed.

Estiandan is arrested and charged with 13 felony counts of illegally prescribing controlled substances.

Byron McKinney, 33, dies of heart disease. A contributing factor was hydrocodone, which Estiandan prescribed.

The medical board files a complaint against Estiandan, seeking to revoke his license.

At the request of the medical board, a Los Angeles County Superior Court judge orders Estiandan to stop prescribing controlled substances.

Estiandan surrenders his medical license.

A jury convicts Estiandan of all counts.

Estiandan is sentenced to five years in prison.

Estiandan is released.