Dr. Gregory G. Bashian, M.D.
Cardiac Electrophysiology (Clinical Cardiac Electrophysiology Physician)
- Medicare participating
At a glance
- Medical school
- Johns Hopkins University School of Medicine (2000)
- Years since graduation
- 26
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 794
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
- 2000Medical school: Johns Hopkins University School of Medicine
- 2007Registered 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
-
Clinical Cardiac Electrophysiology Physician primary
TN license 44638 -
Cardiovascular Disease Physician
OH license 35.087839 · TN license 44638
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Tristar Centennial Medical Center Nashville, TN
- Tristar Summit Medical Center Hermitage, TN
- Vanderbilt Clarksville Hospital Clarksville, TN
- Tristar Horizon Medical Center Dickson, TN
- Tristar Stonecrest Medical Center Smyrna, TN
Medical groups
- Centennial Heart LLC (115 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
- 794
- Services billed
- 6,382
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 1,525 | 460 |
| Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 989 | 300 |
| Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec | 920 | 198 |
| Evaluation of cardiac rhythm monitor system, remote up to 30 days | 595 | 75 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 568 | 440 |
| Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 556 | 165 |
| Established patient office or other outpatient visit, 30-39 minutes | 377 | 325 |
| Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days | 334 | 125 |
| Programming of dual lead pacemaker system | 190 | 158 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 126 | 65 |
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 |
|---|---|
| Eliquis (apixaban) Other prescribers in Nashville, TN | 494 |
| Metoprolol Succinate Other prescribers in Nashville, TN | 246 |
| Amiodarone Hcl Other prescribers in Nashville, TN | 133 |
| Sotalol (sotalol hcl) Other prescribers in Nashville, TN | 85 |
| Xarelto (rivaroxaban) Other prescribers in Nashville, TN | 81 |
| Metoprolol Tartrate Other prescribers in Nashville, TN | 79 |
| Diltiazem 24hr Er (Cd) (diltiazem hcl) Other prescribers in Nashville, TN | 79 |
| Multaq (dronedarone hcl) Other prescribers in Nashville, TN | 63 |
| Carvedilol Other prescribers in Nashville, TN | 55 |
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Nashville, TN | 40 |
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, 11 companies reported 69 payments worth $8,230 in total to this clinician.
| Abbott Laboratories | $7,074 |
|---|---|
| Boston Scientific Corporation | $672 |
| Philips North America LLC | $173 |
| Medtronic, Inc. | $162 |
| Terumo Medical Corporation | $27.99 |
| Inspire Medical Systems, Inc. | $25.13 |
| Novo Nordisk Inc | $21.43 |
| Shockwave Medical, Inc | $20.32 |
| Consulting Fee | $5,618 |
|---|---|
| Food and Beverage | $1,384 |
| Travel and Lodging | $1,228 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Abbott Laboratories Sep 30, 2025 | Consulting Fee TACTICATH ABLATION CATHETER, SENSOR ENABLED · Structural Heart | $5,618 |
| Abbott Laboratories Jul 7, 2025 | Travel and Lodging TACTICATH ABLATION CATHETER, SENSOR ENABLED · Structural Heart · travel to Minnetonka, MN · in-kind | $560 |
| Abbott Laboratories Jul 8, 2025 | Travel and Lodging TACTICATH ABLATION CATHETER, SENSOR ENABLED · Structural Heart · travel to Minneapolis, MN · in-kind | $335 |
| Abbott Laboratories Jul 10, 2025 | Travel and Lodging Electrophysiology · travel to Minneapolis, MN · in-kind | $171 |
| Abbott Laboratories Jul 7, 2025 | Travel and Lodging TACTICATH ABLATION CATHETER, SENSOR ENABLED · Structural Heart · travel to Minneapolis-Edina, MN · in-kind | $153 |
| Abbott Laboratories Jul 7, 2025 | Travel and Lodging TACTICATH ABLATION CATHETER, SENSOR ENABLED · Structural Heart · travel to Minnetonka, MN · in-kind | $9.02 |
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.
Industry-funded research
Named as a principal investigator on 2 industry-funded studies in 2025, from 1 companies. The companies reported $27,998 in research payments for these studies, mostly to the institutions running them.
- NCT06676072--A Study of the TactiFlex SE Catheter and Volt PFA Generator in Subjects With PAF:
Abbott Laboratories - NCT05434650--Abbott Atrial Fibrillation Post Approval Study
Abbott Laboratories
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.