Dr. William F. Alexander, M.D.
Gastroenterology (Gastroenterology Physician)
- Medicare participating
At a glance
- Medical school
- University of North Carolina at Chapel Hill School of Medicine (1983)
- Years since graduation
- 43
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 309
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
- 1983Medical school: University of North Carolina at Chapel Hill 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
-
Gastroenterology Physician primary
TN license MD0000018809
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Ascension Saint Thomas Hospital Nashville, TN
- Regional One Health Memphis, TN
- Saint Thomas River PArk Hospital Mcminnville, TN
- Livingston Regional Hospital Livingston, TN
Medical groups
- Advanced Diagnostic Imaging PC (523 clinicians)
- Ut Regional One Physicians Inc (324 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
- 309
- Services billed
- 631
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 10-19 minutes | 133 | 87 |
| Established patient office or other outpatient visit, 20-29 minutes | 83 | 62 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 65 | 63 |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | 60 | 47 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 47 | 30 |
| New patient office or other outpatient visit, 30-44 minutes | 41 | 41 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 39 | 38 |
| Biopsy of large bowel using a flexible endoscope | 37 | 37 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 30 | 28 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 30 | 29 |
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
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, 3 companies reported 7 payments worth $163 in total to this clinician.
| Janssen Biotech, Inc. | $75.53 |
|---|---|
| Capsovision, Inc. | $50.57 |
| AbbVie Inc. | $36.97 |
| Food and Beverage | $163 |
|---|
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.