Dr. Thomas A. Brown, M.D.
Gastroenterology (Gastroenterology Physician)
- Medicare participating
At a glance
- Medical school
- West Virginia University School of Medicine (2004)
- Years since graduation
- 22
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 902
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
- 2004Medical school: West Virginia University School of Medicine
- 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
-
Gastroenterology Physician primary
FL license ME 113234 · IA license 39634 -
Hepatology Physician
FL license TRN 11832 · IA license 39634 -
Internal Medicine Physician
IA license 39634
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Adventhealth Ocala Ocala, FL
- Marion Communtiy Hospital Ocala, FL
Medical groups
- Endoscopy Center of Ocala Inc (19 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
- 902
- Services billed
- 1,730
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 248 | 205 |
| Established patient office or other outpatient visit, 20-29 minutes | 242 | 198 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 234 | 234 |
| New patient office or other outpatient visit, 45-59 minutes | 163 | 163 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 108 | 108 |
| Biopsy of large bowel using a flexible endoscope | 98 | 98 |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | 67 | 64 |
| New patient office or other outpatient visit, 30-44 minutes | 63 | 63 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 54 | 54 |
| Removal of external hemorrhoids by rubber banding | 51 | 32 |
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 |
|---|---|
| Pantoprazole Sodium Other prescribers in Ocala, FL | 811 |
| Omeprazole Other prescribers in Ocala, FL | 261 |
| Linzess (linaclotide) Other prescribers in Ocala, FL | 82 |
| Colestipol Hcl Other prescribers in Ocala, FL | 80 |
| Ursodiol Other prescribers in Ocala, FL | 72 |
| Famotidine Other prescribers in Ocala, FL | 71 |
| Budesonide Dr (budesonide) Other prescribers in Ocala, FL | 58 |
| Ondansetron Odt (ondansetron) Other prescribers in Ocala, FL | 56 |
| Nortriptyline Hcl Other prescribers in Ocala, FL | 55 |
| Creon (lipase/protease/amylase) Other prescribers in Ocala, FL | 49 |
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, 21 companies reported 96 payments worth $2,685 in total to this clinician.
| AbbVie Inc. | $762 |
|---|---|
| Janssen Biotech, Inc. | $357 |
| Takeda Pharmaceuticals U.S.A., Inc. | $238 |
| Boston Scientific Corporation | $202 |
| Pfizer Inc. | $170 |
| Aimmune Therapeutics, Inc. | $161 |
| Phathom Pharmaceuticals, Inc. | $101 |
| Madrigal Pharmaceuticals | $94.51 |
| Food and Beverage | $2,577 |
|---|---|
| Education | $108 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Janssen Biotech, Inc. Dec 12, 2025 | Education TREMFYA · Immunology · in-kind | $99.00 |
| Janssen Pharmaceuticals, Inc Jul 23, 2025 | Education in-kind | $9.24 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
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.