Rabbi Ranon Teller, 55, was missing for more than 24 hours.
According to a Facebook post published by the Jewish Herald-Voice, Teller was last seen at the Embassy Suites in the Galleria area.
Volunteers formed a search with the help of the Bellaire Police Department and Texas EquuSearch on Monday and met at Congregation Brith Shalom on Bellaire Boulevard.
It was coordinated by Hatzalah of Houston, a nonprofit that offers emergency medical services, with the help of authorities.
Teller's condition wasn't immediately released.
This is a developing story. This article will be updated as more information becomes available.