Nathaniel P. Avila, MD


Not Accepting New Patients

Nathaniel P. Avila, MD

About Me

“I believe we all have a sense of human-connection and that every individual’s health has significance. I strive to listen closely to my patients and cultivate an authentic partnership so I can provide exceptional care and support them on their journey toward achieving optimal personal health." Effective December 31, 2022, Dr. Nathaniel Avila will no longer practice with Houston Methodist Gastroenterology Associates in The Woodlands. A medical records release is not required for patients who choose to continue receiving care from another Houston Methodist Gastroenterology Associates provider . Patients should contact the office at 936 270 3880 for any questions regarding future treatment needs or to make an appointment with Dr. Avila's colleagues in the Gastroenterology Associates practice at Houston Methodist The Woodlands. Patients who would like to request a copy or transfer of medical records may contact the Medical Records Department at 713.394.6428. Please keep in mind, it may take up to fifteen (15) business days for records to be processed.

Nathaniel Avila, MD is a Houston-native gastroenterologist at Houston Methodist The Woodlands Hospital who specializes in treating a variety of conditions including gastroesophageal reflux, swallowing difficulties (dysphagia), achalasia, peptic ulcer disease, pancreatic and liver disease, obesity and nutritional disorders and advanced techniques for weight loss.


Dr. Avila completed medical school and his internal medicine residency at The University of Texas Health Science Center at Houston. During his medical residency, he was the first-ever resident to be named Physician of the Quarter by Harris County Health System as a result of his clinical care for those within the Houston community. During this time, he also received the Arnold P. Gold Foundation Humanism and Excellence in Teaching Award, an accolade based on exceptional teaching skills and a commitment to the compassionate treatment of patients and families, students and colleagues. Dr. Avila went on to complete his Gastroenterology Fellowship at Methodist Dallas Medical Center, where he won the national ACG best fellow abstract for functional bowel disorder.


“I am honored and humbled to care for the people in my community,” said Avila. “A lot of people have invested in my life which, in turn, has blessed me with the ability and desire to give back to others. I practice medicine because I love people and want to be part of their path toward wellness.”


When not caring for patients, Dr. Avila enjoys coaching his children’s soccer and T-ball teams, serving as a keynote speaker for the Hispanic Scholarship Fund and volunteering to teach nationally ranked high school tennis players. He is fluent in English, Spanish and Portuguese.

Clinical Interests

Clinical interests:

  • Gastroenterology, Hepatology and Nutrition
  • Advanced and therapeutic gastrointestinal endoscopy
  • Gastrointestinal physiology and motility
  • Esophageal and foregut disorders
  • Advanced weight loss

Conditions treated:

  • Gastroesophageal reflux disease
  • Swallowing difficulties (dysphagia)
  • Achalasia
  • Gastroparesis
  • Peptic ulcer disease
  • Biliary diseases
  • Pancreas diseases
  • Liver diseases
  • Celiac disease
  • Inflammatory bowel disease
  • Constipation, diarrhea and change in bowel habits
  • Colon cancer screening
  • Obesity


  • EGD and colonoscopy
  • EMR and ESD
  • ERCP
  • Esophageal a manometry
  • Endoscopic suturing

Accepted Insurance Plans

Aetna Affordable Health Choices
Aetna Choice POS / Open Choice
Aetna Common Spirit Health KelseyCare
Aetna Common Spirit Minimum Value Plan
Aetna EPO
Aetna HMO
Aetna Health Network
Aetna International
Aetna Managed Choice / Elect Choice
Aetna Medicare Advantage HMO
Aetna Medicare Advantage PPO
Aetna Meritain Health
Aetna Open Access
Aetna POS
Aetna PPO
Aetna QPOS
Aetna Select
Aetna Signature Administrators
Aetna Signature Administrators Allied Benefits
Aetna Signature Administrators CoreSource
Aetna Signature Administrators TX Annual Conf of UMC
Aetna Student Health
Aetna Transplant
Aetna Workers' Comp
All Saver/United Healthcare
Amerigroup STAR+PLUS Medicare-Medicaid Plan
Amerivantage Medicare Advantage
Amerivantage Medicare Advantage HMO-D-SNP
Beech Street PPO
Best Doctors International
Blue Choice POS
Blue Choice PPO
Blue Cross Blue Shield EPO
Blue Cross Blue Shield FEP Federal Employee Plan
Blue Cross Blue Shield Medicare Advantage HMO
Blue Cross Blue Shield Medicare Advantage PPO
Blue Cross Blue Shield POS
Blue Cross Blue Shield PPO
Blue Edge
Blue Essentials
Blue Essentials Access
Care Improvement Plus Medicare Advantage
Cigna APWU
Cigna Allegiance Houston Methodist Employee Medical Plan
Cigna Allegiance OAP
Cigna Allegiance PPO
Cigna Choice Fund
Cigna EPO
Cigna Global Health Benefits (International)
Cigna Great West
Cigna HMO
Cigna HealthSpring Medicare Advantage HMO
Cigna HealthSpring Medicare Advantage PPO
Cigna Indemnity
Cigna LocalPlus
Cigna NALC
Cigna Network
Cigna Network Open Access
Cigna Open Access
Cigna Open Access Plus (OAP)
Cigna POS
Cigna PPO
Cigna Qualcare
Cigna Shared Administration OAP
Cigna Shared Administration PPO
Cigna SureFit
Community Health Choice Marketplace-Silver & Gold
Community Health Choice Medicare Advantage HMO DSNP
Coventry PPO
Entrust/90 Degree EDI Payer ID# 36878
Erickson Advantage
Evolutions HealthCare PPO
First Health PPO
Galaxy Health Network PPO
HAA Preferred Partners (International)
HMO Blue
HealthSmart Accel PPO
HealthSmart PPO
HealthSmart Payors Organization
Humana HMO / EPO
Humana Medicare Advantage Choice PPO
Humana Medicare Advantage Gold Plus/Choice
Humana Medicare Advantage HMO
Humana Medicare Advantage PPO
Humana Natl POS Open Access
Humana POS & Preferred POS
Humana PPO & Preferred PPO
Humana/ChoiceCare Network PPO
Humana/ChoiceCare+ Network PPO
Independent Medical Systems PPO (IMS)
Medica-UnitedHealthcare Choice Plus
Medicare Railroad
Molina Dual Options StarPlus MMP
Molina Marketplace Exchange
Molina Medicare Complete Care HMO SNP
MultiPlan PPO
National Preferred Provider Network PPO (NPPN)
Olympus Managed Care (International)
Oscar Easy Care Medicare Advantage
PHCS Healthy Directions
Provider Select PPO
TRS-ActiveCare 2 Group 385002
TRS-ActiveCare Fully Insured Plan-South Texas Region Group 295430
TRS-ActiveCare Fully Insured Plan-West Texas Region Group 295781
TRS-ActiveCare HD Group 385000
TRS-ActiveCare Primary Group 385003
TRS-ActiveCare Primary Plus Group 385001
TRS-Care Medicare Advantage
TRS-Care Standard ALT A I Group 485002
TRS-Care Standard ALT A II Group 485003
TRS-Care Standard ALT B I Group 485005
TRS-Care Standard ALT B II Group 485006
TRS-Care Standard CMED Group 485001
TRS-Care Standard Group 485000
TexanPlus/Wellcare Medicare Advantage
Three Rivers Provider Network
UHC Dual Complete MCR
UHC Medicare Chronic Complete
UHC Medicare Complete
UHC Medicare Solutions
US Family Health Plan
USA Managed Care PPO
United Health Integrated Services
United Healthcare Medicare Advantage
United Healthcare Nexus ACO
United Healthcare Plan of the River Valley
UnitedHealthcare Choice
UnitedHealthcare ChoicePlus
UnitedHealthcare Core
UnitedHealthcare Core Plus
UnitedHealthcare EPO
UnitedHealthcare Golden Rule
UnitedHealthcare HMO
UnitedHealthcare Navigate
UnitedHealthcare Navigate Plus
UnitedHealthcare Options PPO
UnitedHealthcare Oxford
UnitedHealthcare POS
UnitedHealthcare PPO
UnitedHealthcare Select / ERS
UnitedHealthcare Student Resources
UnitedHealthcare West
WellMed AARP Medicare Advantage Plan
WellMed AARP Medicare Complete
WellMed United Healthcare Dual Complete

Insurance plans may change. Please verify your plan is accepted when scheduling an appointment.


Gastroenterology | American Board of Internal Medicine
Internal Medicine | American Board of Internal Medicine
Gastroenterology | Methodist Dallas Medical Center
Internal Medicine | The University of Texas Health Science Center at Houston, TX
Doctor of Medicine | The University of Texas Health Science Center at Houston, TX
Biology | The University of Texas at San Antonio, TX
  • Houston Methodist Clear Lake Hospital
  • Houston Methodist Willowbrook Hospital


  • English
  • Portuguese
  • Spanish
Languages listed are spoken by doctor and/or office staff.

Frequently Asked Questions

  • What insurance does Dr. Nathaniel P. Avila accept?
    See the insurance that Dr. Nathaniel P. Avila accepts here.
  • What languages do Dr. Nathaniel P. Avila and/or staff speak?
    Dr. Nathaniel P. Avila and/or office staff speak English, Portuguese and Spanish