Our Providers

Ronald G. Henry, M.D.

ABOUT ME

Dr. Henry has been practicing in the field of urology since 1980. He earned his medical degree from Baylor College of Medicine in Houston, Texas and completed his surgical residency at the University of Hawaii in Honolulu and his urology residency at the University of Texas Health Science Center in Houston.


Dr. Henry is board certified by the American Board of Urology.

In Practice Since: 1980

SPECIALIZATIONS


John G. Giannakis, M.D.

ABOUT ME

Dr. Giannakis earned his medical degree from Oregon Health Sciences University Medical School in Portland Oregon. He received his surgery and urology training at the University of Texas Health Science Center at Houston. During his urological residency he served as Chief Resident in Urology. He has been practicing in the field of urology since 1991.


Dr. Giannakis is board certified by the American Board of Urology.

In Practice Since: 1992

SPECIALIZATIONS


Paul R. Kenworthy, M.D.

ABOUT ME

Dr. Kenworthy earned his M.D. from The Ohio State University College of Medicine. He completed an internship in General Surgery and residency in Urology at the University of Texas Health Science Center at Houston and MD Anderson Cancer Center. During residency, his clinical research was published in journals Urology and The Journal of Urology, as well as in several scientific proceedings and presentations.

Dr. Kenworthy is board certified by the American Board of Urology.

In Practice Since: 1996

SPECIALIZATIONS


OFFICE LOCATIONS

The Woodlands, Texas

Phone: 281.404.3000

Fax: 936.273.6911


Huntsville, Texas

Phone: 936.435.9200

Fax: 936.435.9262

Michael F. Graham, M.D.

ABOUT ME

Dr. Michael Graham joined Northwoods Urology in July of 2001. He earned his medical degree from Baylor College of Medicine in Houston, Texas. He completed his residency in general surgery at the University of Texas Health Sciences Center in Houston. He completed his residency in general urology at Hermann Hospital and was an acting fellow M.D. at the Anderson Cancer Center from 1995 to 1996.

Dr. Graham has been a clinical instructor in surgery/urology at the University of Texas Health Science Center at Houston since 1997.

Dr. Graham is board certified by the American Board of Urology.

In Practice Since: 1996

SPECIALIZATIONS


OFFICE LOCATIONS

Kingwood, Texas

Phone: 281.359.1911

Fax: 281.359.1331


The Woodlands, Texas

Phone: 281.404.3000

Fax: 936.273.6911

Russell P. Libby, M.D.

ABOUT ME

Dr. Libby joined Northwoods Urology in July 2020. Although he was born in Houston, TX, he grew up as a Georgia boy. He graduated from Vanderbilt University an Honors College Scholar with a major in Economics. He then studied the Culinary Arts with a focus on Modern Italian Cuisine at The Culinary Institute of Florence in Italy. He earned his medical degree from Baylor College of Medicine in Houston. He completed his General Surgery internship and Urology residency training at Tulane University School of Medicine. He served as Chief Resident in Urology during his training.

In Practice Since: 2020

SPECIALIZATIONS


If you have a urologic need, we are here to help. Call (281) 404‑3000 about scheduling a TeleVisit, a one-on-one teleconference with a urology provider who can determine if an office visit is necessary. For everyone's health safety, if you have COVID-19 related symptoms--including fever, shortness of breath, cough--and want to convert your upcoming appointment to a TeleVisit, call the office.