Dr. Mark A. Wigger, M.D.
Internal Medicine (Internal Medicine Physician)
- Medicare participating
At a glance
- Medical school
- East Tennessee State University Quillen College of Medicine (1984)
- Years since graduation
- 42
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 144
Licensed in Alabama since 2017, 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
- 1984Medical school: East Tennessee State University Quillen 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
-
Internal Medicine Physician primary
TN license 15826 -
Advanced Heart Failure and Transplant Cardiology Physician
AL license MD.36009 (first issued 2017; active) · KY license 42939 -
Cardiovascular Disease Physician
AL license MD.36009 (first issued 2017; active) · KY license 42939 -
Nephrology Physician
AL license MD.36009 (first issued 2017; active) · KY license 42939
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Vanderbilt University Medical Center Nashville, TN
- Physicians Regional Medical Center Powell, TN
Medical groups
- Vanderbilt University Medical Center (3,567 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
- 144
- Services billed
- 205
- Patients’ average age
- 70
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 40-54 minutes | 79 | 61 |
| New patient office or other outpatient visit, 60-74 minutes | 44 | 44 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 41 | 37 |
| Established patient office or other outpatient visit, 30-39 minutes | 25 | 24 |
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 |
|---|---|
| Entresto (sacubitril/valsartan) Other prescribers in Nashville, TN | 91 |
| Rosuvastatin Calcium Other prescribers in Nashville, TN | 80 |
| Furosemide Other prescribers in Nashville, TN | 75 |
| Tacrolimus Other prescribers in Nashville, TN | 66 |
| Spironolactone Other prescribers in Nashville, TN | 66 |
| Metoprolol Succinate Other prescribers in Nashville, TN | 63 |
| Carvedilol Other prescribers in Nashville, TN | 57 |
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Nashville, TN | 49 |
| Losartan Potassium Other prescribers in Nashville, TN | 46 |
| Omeprazole Other prescribers in Nashville, TN | 44 |
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, 2 companies reported 3 payments worth $65.41 in total to this clinician.
| Iti, Inc. (d/b/a Intra-cellular Therapies, Inc.) | $39.40 |
|---|---|
| E.r. Squibb & Sons, L.l.c. | $26.01 |
| Food and Beverage | $65.41 |
|---|
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.