Dr. Mark D. Peacock, MD
Pulmonology (Pulmonary Disease Physician)
- Medicare participating
At a glance
- Medical school
- University of Missouri, Columbia School of Medicine (1986)
- Years since graduation
- 40
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 89
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
- 1986Medical school: University of Missouri, Columbia School 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
-
Pulmonary Disease Physician primary
TN license 27326 -
Critical Care Medicine (Internal Medicine) Physician
TN license 27326 -
Sleep Medicine (Internal Medicine) Physician
TN license 27326
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
Medical groups
- Advanced Diagnostic Imaging PC (523 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
- 89
- Services billed
- 244
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 222 | 95 |
| Established patient office or other outpatient visit, 30-39 minutes | 221 | 103 |
| Critical care, first 30-74 minutes | 172 | 81 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 110 | 70 |
| Established patient office or other outpatient visit, 20-29 minutes | 51 | 42 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 30 | 30 |
| Established patient office or other outpatient visit, 10-19 minutes | 30 | 29 |
| New patient office or other outpatient visit, 30-44 minutes | 26 | 26 |
| Test to examine how well the lungs exchange gases | 17 | 17 |
| Test to measure expiratory airflow and volume | 17 | 17 |
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 |
|---|---|
| Trelegy Ellipta (fluticasone/umeclidin/vilanter) Other prescribers in Nashville, TN | 196 |
| Prednisone Other prescribers in Nashville, TN | 115 |
| Albuterol Sulfate Hfa (albuterol sulfate) Other prescribers in Nashville, TN | 115 |
| Azithromycin Other prescribers in Nashville, TN | 85 |
| Roflumilast Other prescribers in Nashville, TN | 80 |
| Montelukast Sodium Other prescribers in Nashville, TN | 64 |
| Breo Ellipta (fluticasone/vilanterol) Other prescribers in Nashville, TN | 36 |
| Breztri Aerosphere (budesonide/glycopyr/formoterol) Other prescribers in Nashville, TN | 31 |
| Anoro Ellipta (umeclidinium brm/vilanterol tr) Other prescribers in Nashville, TN | 24 |
| Ipratropium Bromide Other prescribers in Nashville, TN | 22 |
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 9 payments worth $153 in total to this clinician.
| Abbott Laboratories | $137 |
|---|---|
| 3b Medical, Inc. | $16.70 |
| Food and Beverage | $153 |
|---|
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.