Dr. Mark J. Pidala, M.D.
Colorectal Surgery (Colon & Rectal Surgery Physician)
- Medicare participating
At a glance
- Medical school
- University of Cincinnati College of Medicine (1990)
- Years since graduation
- 36
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 239
Licensed in Texas since 1998, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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
- 1990Medical school: University of Cincinnati College of Medicine
- 2006Registered 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
-
Colon & Rectal Surgery Physician primary
TX license K6239 (first issued 1998; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Memorial Hermann Hospital System Houston, TX
Medical groups
- Ut Physicians (1,765 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
- 239
- Services billed
- 510
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| New patient office or other outpatient visit, 30-44 minutes | 94 | 94 |
| Established patient office or other outpatient visit, 20-29 minutes | 89 | 70 |
| Diagnostic exam of rectum and lower large bowel using an endoscope | 78 | 76 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 58 | 58 |
| Established patient office or other outpatient visit, 10-19 minutes | 39 | 32 |
| Diagnostic exam of anus using an endoscope | 33 | 30 |
| New patient office or other outpatient visit, 15-29 minutes | 23 | 23 |
| New patient office or other outpatient visit, 45-59 minutes | 22 | 22 |
| Established patient office or other outpatient visit, 30-39 minutes | 22 | 21 |
| Biopsy of large bowel using a flexible endoscope | 15 | 14 |
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 |
|---|---|
| Hydrocortisone Other prescribers in Houston, TX | 21 |
| Metronidazole Other prescribers in Houston, TX | 19 |
| Neomycin Sulfate | 16 |
| Mesalamine Other prescribers in Houston, TX | 11 |
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, 6 companies reported 6 payments worth $803 in total to this clinician.
| Aroa Biosurgery Incorporated | $167 |
|---|---|
| Baxter Healthcare | $148 |
| Ethicon US, LLC | $138 |
| Pacira Pharmaceuticals Incorporated | $120 |
| Intuitive Surgical, Inc. | $119 |
| Vertex Pharmaceuticals Incorporated | $110 |
| Food and Beverage | $803 |
|---|
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.