Dr. Ethan Massingill , DO
Internal Medicine • Seguin, TX
Professional Overview & Biography Verified Profile Summary
Dr. Ethan Massingill, DO is a registered healthcare professional specializing in Internal Medicine in Seguin, TX. Practice services are available at 1215 E COURT ST under active NPI credentials.
Practice Location & Contact Primary Location
1215 E Court St
Seguin, TX 781555129
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Seguin, TX
Practicing in Seguin, TX (9538 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
CMS Verified: 2026-07-02NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Secondary Practice Locations
11937 Us Highway 271
Tyler, TX 757083154
Phone: 9038777200
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Nurse Practitioner
Advanced Practice Registered Nurse, Family Nurse Practitioner (Certified)
Nurse Practitioner - Acute Care
Adult-Gerontology Acute Care Nurse Practitioner (Board Certified)
Counselor - Professional
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Social Worker - Clinical
Licensed Clinical Social Worker
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 1215 E COURT ST, SEGUIN, TX 781555129 (Tel: 8303792411)
Registered at 1215 E COURT ST, SEGUIN, TX 781555129 (Tel: 8303792411)
Internal Medicine (License #W7368 in TX)
Student in an Organized Health Care Education/Training Program (License #BP10085240 in TX)
NPI status registered as active in NPPES database
Registered at 11937 US HIGHWAY 271, TYLER, TX 757083154 (Tel: 9038777200)
Registered at 11937 US HIGHWAY 271, TYLER, TX 757083154 (Tel: 9038777200)
Recorded as ETHAN MASSINGILL, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
1215 E Court St
Seguin, TX 781555129
Phone: 8303792411
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.