A Manhasset dermatologist was pronounced dead at a Manhattan hospital after being found unconscious in the vestibule of a Chelsea apartment building Sunday morning and NYPD investigators are trying to determine whether foul play was involved, police said.

Kiersten Cerveny, 38, of Castle Ridge Road, was found "unconscious and unresponsive" in the lobby of the West 16th Street building, near Seventh Avenue, by police responding to a 911 call at 8:32 a.m., police said. EMS took Cerveny to Lenox Health Greenwich Village, where she was pronounced dead.

The New York City medical examiner will determine the cause of death; the investigation is ongoing, police said.

NYPD investigators are trying to determine whether Cerveny was a victim of foul play, a police source said.

Investigators have video from inside the building showing two men carrying Cerveny down the stairs, a police source said. They have interviewed one of the men and are seeking to talk to the other, the source said.

The then-Kiersten Rickenbach married Andrew Cerveny, who is also a dermatologist, in 2009 at the Gramercy Park Hotel, according to a New York Times wedding announcement.

The couple met in 2004 as residents at the Medical Center of Louisiana at New Orleans, the announcement said.

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At the time of the wedding, she was the chief of dermatology at Brooklyn Hospital Center and an assistant professor of clinical dermatology at Weill Cornell Medical College in New York, the Times said. She graduated magna cum laude from Duke and received a medical degree from Tulane.

Andrew Cerveny could not be reached for comment Sunday night.

Kiersten Cerveny's parents -- Dianne I. Rickenbach and Robert G. Rickenbach of Scottsdale, Arizona -- also could not be reached for comment.

Her mother-in-law, Marjorie Cerveny of Wadsworth, Ohio, declined to comment when reached by phone and asked for privacy.

According to the Newark Star-Ledger, Cerveny, who then lived in Washington Township, New Jersey, was crowned 1995 America Junior Miss, and had dreams of becoming a pediatrician.

On the website Yelp, where consumers can post reviews, several people praised her work.

The dermatologist "may be one of the best doctors I've seen in NY, and I am totally sold and take pride in now being able to say i can refer you to a great dermatologist!"

Another post said "Dr Cerveny is amazing. Knowledgable and has the best bedside manner I've ever experienced. She listened to my history and offered sensible options for treatment."

With Laura Figueroa

and Alison Fox