Dirk C. Davidson, MD
Specialist
- Medicare participating
At a glance
- Medical school
- Medical University of South Carolina College of Medicine (1991)
- Years since graduation
- 35
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 959
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
- 1991Medical school: Medical University of South Carolina College of Medicine
- 2005Registered 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
-
Specialist primary
TN license MD21772
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- University Health System, Inc Knoxville, TN
- Cookeville Regional Medical Center Cookeville, TN
- Methodist Medical Center of Oak Ridge Oak Ridge, TN
- Cumberland Medical Center Crossville, TN
- Roane Medical Center Harriman, TN
Medical groups
- Tennessee Plateau Oncology PLLC (2 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
- 959
- Services billed
- 249,293
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) | 60,180 | 55 |
| Injection, ferric carboxymaltose, 1 mg | 54,000 | 38 |
| Injection, pembrolizumab, 1 mg | 27,800 | 17 |
| Injection, denosumab, 1 mg | 21,420 | 150 |
| Injection, paclitaxel, 1 mg | 12,080 | 15 |
| Injection, ferric derisomaltose, 10 mg | 8,300 | 61 |
| Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units | 5,600 | 27 |
| Injection, dexamethasone sodium phosphate, 1 mg | 5,093 | 62 |
| Injection, eflapegrastim-xnst, 0.1 mg | 4,356 | 14 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 3,822 | 770 |
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 |
|---|---|
| Letrozole Other prescribers in Crossville, TN | 391 |
| Lupron Depot (leuprolide acetate) | 171 |
| Prolia (denosumab) Other prescribers in Crossville, TN | 165 |
| Hydroxyurea Other prescribers in Crossville, TN | 164 |
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Crossville, TN | 145 |
| Anastrozole Other prescribers in Crossville, TN | 136 |
| Xtandi (enzalutamide) | 133 |
| Prochlorperazine Maleate Other prescribers in Crossville, TN | 130 |
| Oxycodone Hcl Other prescribers in Crossville, TN | 105 |
| Prednisone Other prescribers in Crossville, TN | 97 |
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, 44 companies reported 171 payments worth $3,829 in total to this clinician.
| AstraZeneca Pharmaceuticals LP | $302 |
|---|---|
| Pfizer Inc. | $299 |
| Merck Sharp & Dohme LLC | $228 |
| Novartis Pharmaceuticals Corporation | $227 |
| Daiichi Sankyo Inc. | $189 |
| Incyte Corporation | $187 |
| Aveo Pharmaceuticals, Inc. | $182 |
| Janssen Biotech, Inc. | $167 |
| Food and Beverage | $3,613 |
|---|---|
| Education | $216 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Aveo Pharmaceuticals, Inc. Dec 16, 2025 | Education FOTIVDA · Oncology · in-kind | $94.95 |
| Seagen Inc. Apr 10, 2025 | Education in-kind | $77.99 |
| AstraZeneca Pharmaceuticals LP Apr 21, 2025 | Education in-kind Company’s descriptionJournal Article | $23.10 |
| Aveo Pharmaceuticals, Inc. Mar 27, 2025 | Education FOTIVDA · Oncology · in-kind | $20.00 |
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.