Internal Medicine Experts

Skilled care for complex conditions.

Caregiver helping elderly woman with medication

Comprehensive Adult Medical Care

Internal medicine physicians complete extensive education and training, including medical school and a minimum of three years of postgraduate training focused specifically on the prevention, diagnosis, and treatment of adult diseases.

Internists are often referred to as the “doctor’s doctor” because they frequently serve as consultants to other physicians, helping to solve complex or difficult diagnostic cases.

Despite the name, internal medicine physicians treat much more than “internal” conditions. They care for the whole patient—addressing overall health, chronic conditions, preventive care, and complex medical concerns in adults.

Contact Us: Call to schedule your appointment.

For Dr. Robison, call (940) 766-8873
For Dr. Yap, call (940) 766-8854
For Dr. Kong, call (940) 766-8649

Our Physicians and Advanced Practice Provider

Doctor in white coat with stethoscope

Board-Certified Internal Medicine Physician

Comprehensive Adult Primary Care

Dr. Rita Kong is board certified in internal medicine and provides comprehensive care for adult patients. She focuses on preventive medicine, chronic disease management, and personalized treatment plans to support long-term health and wellness.

Education & Training

  • Undergraduate (Pre-Med): Institute of Medicine, Mandalay, Myanmar
  • Medical School: Institute of Medicine, Mandalay, Myanmar
  • Residency: University of Southern California Medical Center, Los Angeles, CA

Background

  • Hometown: Dallas / Wichita Falls / Los Angeles
  • Year Started in Practice: 1998
  • Years Joined The Clinic: 2001 and 2017

With over two decades of clinical experience, Dr. Kong is committed to delivering attentive, patient-centered internal medicine care.

Location: The Clinic
501 Midwestern Parkway E.
Wichita Falls, TX 76302
3rd Floor – North End of Building

Contact Information

New Patient Email: newpatientcare@cntllp.com
New Patient Phone: (940) 766-8888
Office Phone: (940) 766-8649
Fax: (940) 766-8651

Rita Kong, MD
Older man in blue button-down shirt

Board-Certified Internal Medicine Physician

Internal Medicine

Dr. William Robison is board certified in internal medicine by the American Board of Internal Medicine. With decades of experience in adult primary care, he is dedicated to providing comprehensive, patient-focused medical care built on long-term relationships and continuity.

He offers evaluation, diagnosis, and management of acute and chronic medical conditions; preventive care services; and personalized treatment plans designed to support lifelong health and wellness.

Education & Training

  • Medical School: University of Texas at Austin; Baylor College of Medicine
  • Residency: University of Missouri–Columbia, Internal Medicine Residency (ABIM)

Professional Background

  • Year Started in Practice: 1982
  • Year Joined The Clinic: 1982

Personal Interests

  • Gardening
  • Fishing
  • Sports
  • Church

Location: The Clinic
501 Midwestern Parkway E.
Wichita Falls, TX 76302
3rd Floor – North End of Building

Contact Information

Office Phone: (940) 766-8873
Fax: (940) 766-8427

William Robison, MD
Smiling man wearing blue striped button-down shirt

Board-Certified Internal Medicine Physician

Dr. Francis Eric Yap specializes in comprehensive internal medicine, providing care for adults with acute and chronic conditions while emphasizing preventive health and overall well-being.

Education

  • Medical School: University of Santo Tomas, Philippines
  • Residency: St. Francis Hospital, Evanston, IL

Hometown: Legaspi City, Philippines

Year Started in Practice: 1995

Year Started at CNT: 2006

Location: 501 Midwestern Parkway E.
Wichita Falls, TX 76302
3rd Floor, North End of the building

Contact Information

Phone: (940) 766-8854
Fax: (940) 766-8427

Francis Eric Yap, MD
Brenda Picture (1)

dult -Gerontology Acute Care Nurse Practitioner:

Brenda Ysasaga dedicated to providing compassionate, patient-centered care for adults and older adults.

Education:

  • Master of Science in Nursing AGACNP: University of Texas Arlington
  • BS: Midwestern State University

Personal Interests

  • Family, Travel, and volunteering

Hometown: 

Year Started in Practice: 2022

Year Started at CNT: 2026

Location: 501 Midwestern Parkway E.
Wichita Falls, TX 76302
3rd Floor North Side of building.

Contact Information

Phone (940) 763-7843

Fax (940) 397-5482

Brenda Ysasaga, MS, AGACNP-BC