Dr. Bret J. Barrett, MD
Infectious Disease (Infectious Disease Physician)
- Medicare participating
At a glance
- Medical school
- Louisiana State University School of Medicine in Shreveport (2002)
- Years since graduation
- 24
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 403
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2002Medical school: Louisiana State University School of Medicine in Shreveport
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Infectious Disease Physician primary
MS license 20210
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mississippi Baptist Medical Center Jackson, MS
Medical groups
- Medical Foundation of Central Mississippi Inc (272 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 403
- Services billed
- 2,522
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 1,710 | 358 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 571 | 209 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 384 | 316 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Sodium Chloride (0.9 % sodium chloride) Other prescribers in Jackson, MS | 58 |
| Vancomycin Hcl | 36 |
| Ceftriaxone (ceftriaxone sodium) Other prescribers in Jackson, MS | 32 |
| Ertapenem (ertapenem sodium) | 25 |
| Cefazolin Sodium | 19 |
| Piperacillin-Tazobactam (piperacillin sodium/tazobactam) | 17 |
| Meropenem | 14 |
| Cefepime Hcl | 13 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $27.21 in total to this clinician.
| Merck Sharp & Dohme LLC | $27.21 |
|---|
| Food and Beverage | $27.21 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.