Newly Uncovered Records Reveal Untold Health Details About Actor Patrick Muldoon

We just got the official rundown on Patrick Muldoon’s passing, and it fills in a lot of the blanks fans have been wondering about. It’s clinical, sure — but it also explains how a 57-year-old actor could be gone so suddenly.

What the death certificate actually says

• Immediate cause of death: myocardial infarction — in plain English, a heart attack.
• Underlying causes: a hereditary coagulopathy disorder (a genetic clotting issue) and a pulmonary embolism (a blood clot that traveled to and blocked an artery in the lungs).
• Cremation took place Tuesday, April 28, per the County of Los Angeles Department of Public Health.
• The certificate lists his occupation as actor and producer, and notes he was never married.
• The document was obtained on Wednesday, April 29.

The timeline

Muldoon died on Saturday, April 19, shortly before 11 a.m. He was 57. His manager confirmed the news that day, and tributes started pouring in from the people who worked with him and loved him.

If you know him from TV and movies, you probably clocked him first on 'Days of Our Lives' and in Paul Verhoeven’s cult favorite 'Starship Troopers.' A fun bit of early-career context that surfaced in the remembrances: back when he was 21 and a student at USC, he had a recurring role on 'Who’s the Boss' — more on how that came up in a second.

What friends and costars are saying

One of Muldoon’s closest friends — and an ex — Denise Richards shared a long note on April 21. She says they met in their very first acting class when she was 19 and he was 21, back when he was juggling school at USC with that 'Who’s the Boss' gig. The post reads like a love letter to a lifelong friend who always showed up for her.

'This is so hard for me to put into words... You were my best friend and my family. '

Tori Spelling, another ex who stayed close with him, also wrote on April 21 that she put off posting because saying anything would make it feel real. She called him singularly kind, weird in the best way, and someone she could always laugh with — and, importantly, someone who could laugh at himself.

Plenty of colleagues from 'Days of Our Lives' and beyond posted their own memories too — the consistent theme was warmth, loyalty, and a mischievous sense of humor that made even long days feel lighter.

Personal life at the end

Although the death certificate notes he was never married, Muldoon was in a committed relationship with his girlfriend, Miriam Rothbart, when he died. In an August 2025 Instagram caption, he marked their two-year anniversary and joked about the night they made it official. Rothbart has not publicly commented since his passing.

The medical piece, without the jargon

The certificate links his fatal heart attack to a chain of events: a genetic disorder that messes with normal clotting, which can lead to clots forming when they shouldn’t; one of those clots traveled to his lungs (a pulmonary embolism); and that cascade ultimately ended in the heart attack. It’s a lot, but it paints a clearer picture than the initial headlines did.