Stone Oak Family Doctors' mission is to provide personalized, high-quality care on an as-needed or preventative basis.  We have created a practice that we believe in and choose for our own family members.

We are a full-service family practice of dedicated, experienced physicians who believe in working with our patients to maintain and improve their health. We work together to serve your entire family for all of your medical needs in all stages of life. Our physicians believe in providing comprehensive health care services to our patients in a friendly, relaxed atmosphere. We also believe in educating our patients as we work with them to achieve the best physical state possible. Healthcare requires a team, the patient and the physician, both working together to achieve your best health. Patient compliance plays a huge role in the success of this team.

​We focus our care on keeping you healthy and out of the hospital. We focus on providing high-quality medical care and creating a better patient experience. We look forward to serving the healthcare needs in our community and to becoming your family's healthcare home.


Each physician comes to our practice with their own unique background and training. Our Physician Assistant works with each physician to assist them with patient care.

To schedule an appointment, please call: 210-496-7999. For established patients with an acute illness or minor injury, our Express Care same-day appointment clinic (staffed by one of our physicians or physician assistant) is available Monday through Friday from 8:00AM to 4:15PM and on Saturday from 10:00AM to 12:00PM.

If you are a new patient, please download and complete the New Patient Forms from our website and bring them with you to your appointment. 


Meet the Doctors 

Dr. John N. Phillips, CEO

Dr. Phillips earned his medical degree from the University of Texas 
​Health Science Center in San Antonio, TX. He completed his internship
​and residency at Tulane University Hospital in New Orleans, LA. , and
has been practicing family medicine for over 25 years.

Dr. Phillips is committed to changing the face of health care delivery for
seniors by focusing on preventive medicine. This means delivering more
personalized medical care and providing you with the preventive tools you
​need to improve your health and well-being.

Dr. Phillips' office hours are Monday, Tuesday and Thursday from 9AM  -
11:15AM and Wednesday and Friday from 9:00AM to 4:15PM.

To learn more about Dr. Phillips in his own words, click on the video (right).

Wendy T. Nguyen, M.D.

Dr. Nguyen earned her medical degree from the University of Texas Health
Science Center in San Antonio, TX. She completed her residency in Family
Practice at the Riverside Family Practice Residency Program in Newport
News, Virginia. Dr. Nguyen is Board Certified by the American Board of Family
Practice and is affiliated with the Bexar County Medical Society and the Texas
​Medical Association.

Dr. Nguyen's office hours are M/T/Th/F from 9:15 am to 3:45 pm, and on
Wed from 9:15 am to 11:45 am.

To learn more about Dr. Nguyen in her own words, click on the video (right).

​Stephanie F. Hoefle, M.D.

Dr. Hoefle earned her medical degree from the Louisiana State University
School of Medicine in New Orleans, LA. She completed her residency at
Texas Tech University in El Paso, TX . Dr. Hoefle is Board Certified by the
American Board of Family Medicine, and has been with Stone Oak Family
​Doctors since 2005.

Dr. Hoefle's office hours are Mon  through Thurs 8:00 am to 3:30 pm.

To learn more about Dr. Hoefle in her own words, click on the video (right).

Rohan P. Coutinho, M.D.

Dr. Coutinho earned his medical degree from Ross University School of
Medicine. He completed his residency at the Corpus Christi Family Practice
Residency Program in Corpus Christi, TX. Dr. Coutinho is Board Certified by
the American Board of Family Medicine,

Dr. Coutinho's office hours are Monday through Friday from 8 am to 4:15 pm.

To learn more about Dr. Coutinho in his own words, click on the video (right).

Elenita L. Usher, M.D.

Dr. Usher earned her medical degree from the Universidad de San Carlos
de Guatemala, in Guatemala City, Guatemala.  She completed a Family Practice
Residency and a Geriatrics Fellowship at Texas Tech University Health Science
Center in Permian Basin, Texas.  Dr. Usher is Board Certified in both Family
Medicine and Geriatrics.  With over 20 years of experience, she joined Stone
Oak Family Doctors in July 2017.

Dr. Usher's office hours are Monday, Thursday and Friday from 8:00AM to
4:15PM, Tuesday 8:00AM to 11:30AM, and Wednesday 1:00PM to 4:15PM. 

​To learn more about Dr. Usher in her own words, click on the video (right).

​* For the longer FULL version of her video, (including additional segments
on Diabetes, Speaking Spanish, Keeping-Up with Technology and a story 
about an interesting case,

​The SOFD Management Team

Administrator :  Anne McCollough, RRT, MSHCA 

​Clinic Manager: Gina Goette, LVN

HEDIS Quality Manager: Gloria Gonzalez

About Us

Call Us:  210-496-7999

Stone Oak Family Doctors, P.A.