Meet Our Team

Stephen Glaser, D.O.

Dr. Glaser worked with handicapped children as a Physical therapist prior to receiving his Doctorate in Osteopathic Medicine in 1984 at the University of North Texas Health Science Center.  He completed his post doctorate residency in Family Medicine at Doctors Hospital in Columbus, Ohio; and he is Board Certified in Family Medicine by the American College of Osteopathic Family Physicians.  He is on the medical staff at both Denton Regional Medical Center and Medical Center of Lewisville.  Dr. Glaser has been active on various medical boards in the metroplex and is past president of Denton Independent Physicians Association.  He enjoys teaching medical students as an Assistant Clinical Professor of Medicine at the UNT Health Science Center.  He and his wife, Bobbie, have 3 grown children.

 

 

 

 

 

Jack A. Maxwell, D.O.

Jack A. Maxwell, D.O. has been in private practice for over 20 years.  He received his B.A. and M.S. from the University of North Texas and completed his doctorate at the University of North Texas Health Science Center in 1984.  He received his post-graduate training in family medicine at Doctors Hospital in Columbus, Ohio.   He is Board Certified in Family Medicine by the American College of Osteopathic Family Physicians, and has held privileges at Denton Regional Medical Center and Medical Center of Lewisville since 1987.  Dr. Maxwell lives in Corinth with his wife and has 4 wonderful children.

 

 

 

 

 

Daniel Sone, D.O.

Daniel Sone, D.O. graduated from the University of Oklahoma with a B.A. in Psychology in 1991.  He then received his Doctor of Osteopathic Medicine degree in 1996 from Oklahoma State University-College of Osteopathic Medicine.  Dr. Sone completed his internship and residency in Family Practice at the University of North Texas Health Science Center.  Thereafter he joined Highland Family Medical Center in 1999.  Aside from practicing medicine, Dr. Sone is a clinical preceptor for the UNT Health Sciences Center, occasionally teaching med students.  Dr. Sone was voted “Best Doctor in Denton County” for 2007 and 2008.

 

 

 

 

 

Brenda K. Ewart, D.O.

Brenda K. Ewart, D.O., a native Texan and graduate of Texas A&M University, received her medical degree from UNT Texas College of Osteopathic Medicine in 1990.  She is Board Certified by the American Osteopathic Board of Family Physicians, and has practiced in the Dallas area for 18 years.  She joined Highland Family Medical Center in 1998 – full time since 2004.  Prior to Highland Famliy, she cared for patients at a private pediatric practice, and served the students at both TWU and UNT.  Dr. Ewart is married, has two children, and enjoys time with her family, reading, and outdoor activities.

 

 

 

 

 

Emily Williams, P.A.-C

Emily Williams completed her Bachelor’s Degree at Texas A&M University (where she studied Community Health).  Emily also attended the University of Texas Southwestern Medical Center, where she received her Physician Assistant training, graduating with honors in 1999.  She then joined Highland Family Medical Center, where she has practiced for the past 10 years. She is a Board Certified Family Practice Physicians Assistant, and a member of both Texas Association of Physician Assistants and the American Academy of Physician Assistants.  Her interests include women’s health, preventative medicine, nutrition, and exercise.  She lives in Denton with her husband and two daughters.

 

 

 

 

 

Jason Maris, P.A.-C

Jason served five years in the US Marine Corps before attending UT Arlington, studying biology prior to receiving his PA degree from UTSW Medical Center at Dallas.  Jason’s clinical interests include sports medicine, diabetes management, and minor surgical procedures.  He is married with twin daughters.  During his free time, he enjoys camping, fishing, and traveling with his family.

 

 

 

 

 

 

Bill Vencill, P.A.-C

Bill Vencill graduated from Missouri Valley College in 1994 with a BS in biology.  he later attended Nova Southwestern University, where he graduated with both a B.S. in Physician Assistant Studies and a Masters of Public Health.  Bill began his family practice career in Grapevine, TX and has been practicing with Lake Cites Medical since 2000.  He is licensed by the Texas State Board of Medical Examiners and certified by the National Commission on Certification of Physician Assistants.  He is also a member of the American Academy of Physician Assistants.  He, his wife, and son live in Bedford, TX.

 

 

 

 

 

Sarah Null, PA-C

Sarah Null completed her Bachelor’s Degree at Texas Woman’s University in Biology and Chemistry. Sarah also attended the University of North Texas Health Science Center, where she received her Master’s Degree in Physician Assistant Studies in May 2010. She began her family practice career in Bridgeport, TX and is the newest clinician to join the Lake Cities Medical Center. She is licensed by the National Commission on Certification of Physician Assistants. She is a member of the Texas Association of Physician Assistants and the American Academy of Physicians Assistants. She lives in Denton with her husband. During her free time, she enjoys Oklahoma State football, photography, and spending time with family and friends.