Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Frederick Ergen, MD

Individual provider Gastroenterology Physician · NPI 1710249529

William Frederick Ergen, MD is a Gastroenterology in Knoxville, Tennessee. Graduated from University of Tennessee, Hsc, College of Medicine in 2012, 14 years ago. Practices with Gastrointestinal Associates PC, a 33-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
14
Trained at
University of Tennessee, Hsc, College of Medicine
Licensed in
TN
In the registry since
2012
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1311 Dowell Springs Blvd
Knoxville, TN 37909-2454
Phone: (865) 588-5121
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 51868 (TN)

Record details

NPI number1710249529
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 8, 2012
Last updated in NPPESApril 10, 2025
Certification dateApril 10, 2025
Mailing address1311 Dowell Springs Blvd, Knoxville, TN 37909-2454

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF TENNESSEE, HSC, COLLEGE OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice Gastrointestinal Associates Pc — 33 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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