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

John M Sullivan, MD

Individual provider Surgery Physician · NPI 1336132117

John M Sullivan, MD is a General Surgery in Ennis, Texas. Graduated from University of Michigan Medical School in 1997, 29 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
29
Trained at
University of Michigan Medical School
Licensed in
TX
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

802 W Lampasas St
Ennis, TX 75119-4500
Phone: (972) 878-4700
Fax: (972) 878-2238
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence K5708 (TX)
Vascular Surgery Physician Taxonomy 2086S0129X · Licence K5708 (TX)

Record details

NPI number1336132117
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 26, 2005
Last updated in NPPESJanuary 13, 2010
Mailing address802 W Lampasas St, Ennis, TX 75119-4500

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1997 (29 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Ennis