Charles Cullen—Saint Luke’s Medical Center

Charles Cullen’s relationship with Saint Luke’s Medical Center began as that of a capable, helpful critical-care nurse and became a source of alarm when coworkers connected unusual patient deaths with his shifts and medication access. The hospital’s response left a consequential gap: its internal inquiry did not establish a prosecutable case, and Cullen moved on with a neutral reference, while nurses’ observations and records later supplied investigators with a troubling pattern.

Nurse, coworker, and access to the unit

At Saint Luke’s Medical Center, Cullen worked in the coronary care unit, where his ordinary duties gave him intimate access to patients, intravenous lines, medication storage, and the rhythms of a night shift. He was often early, favored working at night, and made himself useful around the unit. Coworkers knew him as helpful and generous with his time; Kim Wolfe, who had crossed shifts with him for more than two years, liked him. That familiarity mattered: his assistance could appear to be a routine kindness rather than a reason for scrutiny.

The unit’s conditions also made apparently ordinary actions difficult to distinguish from dangerous ones. In one account, Cullen injected digoxin into an elderly patient’s IV through a piggyback port, a route nurses commonly used to flush a line. He disposed of the vial and needle in the sharps box, then returned to the nurses’ station and, when the patient went into cardiac arrest, took command of the code. The act of administering medication and the act of trying to resuscitate the patient sat side by side within his clinical role. The account emphasizes how the legitimate procedure and the private patient room could conceal what had happened from colleagues.

Another night, Cullen arrived early, gathered medications delivered by a pharmacy runner, and took them into the supply room alone. He prepared syringes, transferred drugs into IV bags, and placed the finished bags in named patient trays. Later, he could be seen helping colleagues set up IV lines and responding during a code; the coworkers did not connect those separate acts. When Pronestyl appeared again on the shelf, its return echoed the rearranged chairs that Cullen habitually moved around the unit. Such repeated, mundane routines formed the outward face of a relationship in which access and helpfulness could obscure risk.

Suspicion among coworkers

Concern did not arise from a single observation. Nurses noticed that patients who seemed to be recovering sometimes deteriorated after Cullen changed their IVs. Lynn Tester remembered patients dying suddenly and strangely after such changes. Robin Saulsberry described Cullen leaving a patient’s room shortly before an unexpected code and recalled his intense attention to the unit’s electrocardiogram monitor. Saulsberry, who had a doctorate in chemistry, suspected Pronestyl, a drug Cullen had been found dumping from the medication closet shelves.

Tester compared Cullen’s share of working hours with his presence at deaths: he worked 26 percent of the hours but was present for 58 percent of the deaths, by her calculation. Another nurse recalled that the unit averaged twenty to twenty-two Code Blues a month while Cullen worked there, then went six months without one after he left. These observations strengthened coworkers’ suspicion, but a recurring pattern was not, by itself, proof that he had deliberately caused any particular death.

The medication concerns sharpened when a dangerous paralytic, vecuronium bromide, was apparently reconstituted in syringes despite no patient on the unit having been prescribed it during the four-shift weekend in question. A total of 60 milligrams appeared to have been prepared, but where it had gone was uncertain. In response, Gerry Kimble, Candy Wahlmark, and Wolfe took turns watching the medical storage room. Wolfe saw Cullen enter after moving chairs; Candy was watching too. Their surveillance made his access newly visible, but the scene did not settle what had happened to the medication or establish a patient-specific link.

The hospital’s handling of the concern

The first account of the investigation came not from Saint Luke’s administration but from nurse Pat Medellin. She had observed unusual deaths and had also seen Cullen escorted out for diverting dangerous medications. Convinced that he might be responsible for the deaths, she urged the hospital to take the matter seriously. The administration told her that Cullen had not harmed patients and closed its investigation. Unsatisfied, Medellin spoke on August 29, 2002, to an acquaintance in the Easton, Pennsylvania, Police Department. The concern then passed from the officer to his captain, to the coroner, and to the Lehigh County district attorney’s office.

State troopers interviewed Saint Luke’s employees, whose accounts repeatedly described deaths during night shifts and patients deteriorating after Cullen changed IVs. The investigation brought those reports together, but forensic review proved harder. An outside pathologist examined charts for seventeen patients selected by Saint Luke’s and found nothing in the paperwork that could be prosecuted. The limits of that review did not erase coworkers’ accounts; they showed the difference between a pattern that looked alarming and evidence sufficient to establish what had happened in an individual case.

Saint Luke’s personnel file presented a notably spare account of Cullen’s departure. It recorded that he resigned after repeated reprimands and stated that he should not be considered for rehire because of a medication issue. It did not name vecuronium bromide or the other powerful drugs associated with the concerns. Investigators recognized that the hospital lacked concrete evidence to determine conclusively that Cullen had intentionally overdosed a specific patient. At the same time, the narrow record meant that later employers and investigators could not readily see the full substance of the concerns. Cullen left with neutral references and took a nursing job at Somerset Medical Center.

The unresolved relationship follows him

At Somerset, Cullen told Amy Loughren that he had not given her or the hospital the whole story about his departure from Saint Luke’s. He described an investigation and said the hospital administration had persecuted him; he also suggested that the scrutiny might have resumed after Saint Luke’s saw his photograph in a Somerset recruitment brochure. His account cast the earlier episode as unfair treatment and personal misfortune, not as a warning about patient safety. The contrast between that explanation and the nurses’ reports became important as the later investigation gathered force.

Loughren initially had reason to defend him. She had already resisted a new insulin accountability form at Somerset because she thought its requirement that nurses estimate the remaining insulin was inaccurate and because she suspected something had happened to patients. As rumors spread, coworkers knew she was Cullen’s friend and associated both of them with the insulin issue. When investigators showed her Cullen’s Pyxis record from the night Reverend Gall died, she recognized its significance. For the first time, she could imagine that her friend had done something terrible, though she could not yet reconcile the record with the person she believed she knew.

Her later review of Cullen’s work practices exposed a possible route around the medication-dispensing system: at Somerset, he often stationed himself where the pharmacy runner arrived and took the delivery tote, a habit she had once read as helpfulness. That discovery belongs to the later investigation, not proof of a particular Saint Luke’s incident. In retrospect, however, it deepened the significance of the earlier reports about his access and apparently helpful conduct. The Saint Luke’s relationship therefore remained unresolved in two senses: coworkers’ suspicions were persistent, but the hospital’s inquiry and chart review did not yield a prosecutable account of individual deaths.

Consequences and significance

The Saint Luke’s episode became both an early warning and an investigative dead end. Medellin’s decision to take her concern outside the hospital carried the matter into law enforcement, while the accounts collected there gave investigators a picture of repeated deaths, medication irregularities, and Cullen’s presence. Yet the hospital’s closed inquiry, limited personnel record, and the pathologist’s inconclusive review left the central allegations difficult to prove. The unresolved outcome did not establish Cullen’s guilt for every suspected Saint Luke’s death; it did show how concerns could be divided between clinical observation, internal administration, employment records, and criminal investigation.

For Cullen, departure changed the setting without ending the significance of what had happened. Saint Luke’s had removed him over medication concerns, but its formal record gave the next hospital little detail, and he found work at Somerset. For Loughren and the investigators, the old episode became a framework for reading new evidence, while its gaps remained real. The relationship is thus defined not only by suspicion of harm, but by the distance between what coworkers saw, what the institution could or would record, and what investigators could establish.