Dr. Gregory A. Thomas, M.D.
Cardiothoracic Surgery (Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician)
- Medicare participating
At a glance
- Medical school
- Wayne State University School of Medicine (1988)
- Years since graduation
- 38
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 155
Licensed in Alabama since 2003, according to the Alabama Board of Medical Examiners and Medical Licensure Commission. 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
- 1988Medical school: Wayne State University School 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
-
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician primary
AL license 25181 (first issued 2003; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Huntsville Hospital Huntsville, AL
- Marshall Medical Centers Boaz, AL
Medical groups
- Hh Heart Center, LLC (93 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
- 155
- Services billed
- 535
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 40 | 37 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 33 | 20 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 31 | 31 |
| Ultrasonic guidance during surgery | 22 | 22 |
| Harvest of vein using an endoscope | 22 | 22 |
| New patient office or other outpatient visit, 60-74 minutes | 21 | 21 |
| Coronary artery bypass using artery graft, 1 graft | 21 | 21 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 16 | 15 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 13 |
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 |
|---|---|
| Metoprolol Tartrate Other prescribers in Huntsville, AL | 68 |
| Potassium Chloride Other prescribers in Huntsville, AL | 61 |
| Furosemide Other prescribers in Huntsville, AL | 61 |
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Huntsville, AL | 53 |
| Amiodarone Hcl Other prescribers in Huntsville, AL | 33 |
| Methocarbamol Other prescribers in Huntsville, AL | 29 |
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Huntsville, AL | 27 |
| Famotidine Other prescribers in Huntsville, AL | 24 |
| Tramadol Hcl Other prescribers in Huntsville, AL | 20 |
| Atorvastatin Calcium Other prescribers in Huntsville, AL | 18 |
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, 8 companies reported 14 payments worth $493 in total to this clinician.
| Abiomed | $233 |
|---|---|
| Surgical Specialties Corporation (US), Inc. (DBA Corza Medical) | $94.74 |
| Artivion, Inc. | $38.36 |
| Angiodynamics, Inc. | $33.40 |
| Atricure, Inc. | $26.67 |
| Baxter Healthcare | $25.07 |
| Prime Surgical, LLC | $20.97 |
| La Jolla Pharmaceutical Company | $20.86 |
| Food and Beverage | $493 |
|---|
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.