Reina Armamento Villareal, MD, FACE

Reina Armamento Villareal, MD, FACE

Associate Professor of Medicine

Education and Experience

10/18/99- present: Assistant Professor of Medicine, Washington Univ. Sch. Of Med.

10/97-10/15/99: Clinical Instructor of Medicine, Washington Univ. Sch. Of Med. Private Practice, Overland Medical Center/ BJC Medical Group

09/95-8/97: Private Practice, Collingsworth General Hospital and Collingsworth Family Clinic, Wellington, Tx

1994-1995: Residency, Internal Medicine, Texas Tech University, Amarillo, Tx

1993-1994: Internship, Internal Medicine, Deaconess Hospital, St. Louis, Mo

1990-1993: Fellowship, Endocrinology and Metabolism, The Jewish Hospital of St. Louis at Washington University Medical Center

1987-1988: Fellowship, Endocrinology, University of the Philippines, Manila, Phil.

1985-1986: Fellowship, Diabetes, Mary Johnston Hospital, Manila, Phil.

1982-1985: Residency Internal Medicine, Chong Hua Hospital, Cebu, Phil.

1980-1981: Rotating Internship, Silliman University Medical Center, Dumaguete, Phil.

1976-1980: Doctor of Medicine, Cebu Institute of Medicine, Cebu Philippines

1972-1976: Bachelor of Arts, Velez College, Cebu, Philippines


I am working on the effect of estrogen replacement therapy on the oxidative metabolism of estrogen. Endogenous estrogen is metabolized mainly through the inactive 2-hydroxylation and active 16-a hydroxylation pathway. Currently, I am trying to find out if there is a preferential metabolism of exogenously administered estrogen in postmenopausal women on estrogen/hormone replacement therapy. Secondly, I am also interested in finding out if we use these oxidative products of estrogen metabolism to predict response to estrogen/hormone replacement therapy.


Sandoz Postdoctoral Fellowship in Bone Metabolism (07/92-06/93)