Dr. John S. Gardner, MD
Interventional Cardiology (Interventional Cardiology Physician)
- Medicare participating
At a glance
- Medical school
- University of Tennessee, Hsc, College of Medicine (2006)
- Years since graduation
- 20
- In the NPI registry since
- 2008
- Medicare patients seen, 2024
- 1,391
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
- 2006Medical school: University of Tennessee, Hsc, College of Medicine
- 2008Registered 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
-
Interventional Cardiology Physician primary
TN license 51733 -
Cardiovascular Disease Physician
TN license 51733
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Methodist Hospitals of Memphis Memphis, TN
- Baptist Memorial Hospital Memphis, TN
- Baptist Memorial Hospital Desoto Southaven, MS
- Baptist Memorial Hospital Tipton Covington, TN
- Baptist Memorial Hospital Union County New Albany, MS
Medical groups
- Stern Cardiovascular Center, PA (127 clinicians)
- Stern Cardiovascular Foundation, Inc (109 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
- 1,391
- Services billed
- 4,860
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 959 | 550 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 683 | 490 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 476 | 456 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 374 | 181 |
| Insertion of needle into vein for collection of blood sample | 323 | 260 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 183 | 176 |
| Blood test, lipids (cholesterol and triglycerides) | 170 | 164 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 156 | 145 |
| Blood test, basic group of blood chemicals (calcium, total) | 144 | 116 |
| Blood test, comprehensive group of blood chemicals | 119 | 117 |
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 |
|---|---|
| Rosuvastatin Calcium Other prescribers in Germantown, TN | 369 |
| Amlodipine Besylate Other prescribers in Germantown, TN | 321 |
| Atorvastatin Calcium Other prescribers in Germantown, TN | 316 |
| Eliquis (apixaban) Other prescribers in Germantown, TN | 311 |
| Losartan Potassium Other prescribers in Germantown, TN | 189 |
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Germantown, TN | 172 |
| Metoprolol Succinate Other prescribers in Germantown, TN | 170 |
| Furosemide Other prescribers in Germantown, TN | 165 |
| Ezetimibe Other prescribers in Germantown, TN | 162 |
| Carvedilol Other prescribers in Germantown, TN | 131 |
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, 20 companies reported 76 payments worth $1,964 in total to this clinician.
| Edwards Lifesciences Corporation | $705 |
|---|---|
| Medtronic, Inc. | $270 |
| Bayer HealthCare Pharmaceuticals Inc. | $158 |
| Amgen Inc. | $147 |
| Bridgebio Pharma, Inc. | $106 |
| E.r. Squibb & Sons, L.l.c. | $91.01 |
| Merck Sharp & Dohme LLC | $63.03 |
| Novartis Pharmaceuticals Corporation | $51.16 |
| Food and Beverage | $1,684 |
|---|---|
| Travel and Lodging | $280 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Edwards Lifesciences Corporation Apr 15, 2025 | Travel and Lodging EVOQUE · Transcatheter Valve Repair · travel to Nashville, TN · in-kind | $280 |
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.