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

Mr. Gilchrist Lewis Jackson, MD

Individual provider Surgery Physician · NPI 1326134602

Mr. Gilchrist Lewis Jackson, MD practises General Surgery in Houston, Texas. Graduated from University of Louisville School of Medicine in 1974, 52 years ago. Practices with Tmh Physician Associates PLLC, a 1,899-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
52
Trained at
University of Louisville School of Medicine
Licensed in
TX
In the registry since
2006
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

7515 S Main St Ste 740 Texas Oncology
Houston, TX 77030
Phone: (713) 795-0202
Fax: (713) 799-8290
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence E7628 (TX)

Record details

NPI number1326134602
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESDecember 12, 2016

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesSURGICAL ONCOLOGY
Medical schoolUNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduated 1974 (52 years in practice)
Group practice Tmh Physician Associates Pllc — 1899 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hernia repair - groin (open) 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients29
Services billed 62 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Tmh Physician Associates PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1899 clinicians in the practice; 12 are shown here.

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