Dr. Jon A. Grammes, DO
Cardiac Electrophysiology (Clinical Cardiac Electrophysiology Physician)
844 Kempsville Rd Ste 204
Norfolk, VA 23502
Who else practices at this address →
Norfolk city is a federal dental shortage area. About shortage areas
- Medicare participating
At a glance
- Medical school
- Philadelphia College of Osteopathic Medicine (2002)
- Years since graduation
- 24
- In the NPI registry since
- 2010
- Medicare patients seen, 2024
- 2,068
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. What an NPI is
Education and training
- 2002Medical school: Philadelphia College of Osteopathic Medicine
- 2010Registered with an NPI (national billing number; not a license date)
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
VA license 0102202645 -
Cardiovascular Disease Physician
VA license 0102202645
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Sentara Norfolk General Hospital Norfolk, VA
- Sentara Leigh Hospital Norfolk, VA
- Sentara Virginia Beach General Hospital Virginia Beach, VA
- Sentara Princess Anne Hospital Virginia Beach, VA
- Sentara Obici Hospital Suffolk, VA
Medical groups
- Sentara Medical Group (1,408 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
- 2,068
- Services billed
- 6,162
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 1,527 | 980 |
| Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 785 | 310 |
| Established patient office or other outpatient visit, 30-39 minutes | 519 | 471 |
| Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 404 | 156 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 280 | 207 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 235 | 231 |
| Programming of dual lead pacemaker system | 201 | 180 |
| Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days | 192 | 108 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 170 | 169 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 131 | 112 |
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 Norfolk, VA | 664 |
| Flecainide Acetate Other prescribers in Norfolk, VA | 185 |
| Metoprolol Succinate Other prescribers in Norfolk, VA | 176 |
| Xarelto (rivaroxaban) Other prescribers in Norfolk, VA | 140 |
| Metoprolol Tartrate Other prescribers in Norfolk, VA | 137 |
| Amiodarone Hcl Other prescribers in Norfolk, VA | 120 |
| Furosemide Other prescribers in Norfolk, VA | 89 |
| Diltiazem 24hr Er (Cd) (diltiazem hcl) Other prescribers in Norfolk, VA | 85 |
| Carvedilol Other prescribers in Norfolk, VA | 83 |
| Dofetilide | 57 |
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, 6 companies reported 35 payments worth $678 in total to this clinician.
| Boston Scientific Corporation | $217 |
|---|---|
| Biosense Webster, Inc. | $179 |
| Vital Connect, Inc | $158 |
| Abbott Laboratories | $46.03 |
| Cordis US Corp. | $44.10 |
| Novo Nordisk Inc | $33.11 |
| Food and Beverage | $678 |
|---|
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 1 industry-funded study in 2025, from 1 company. The companies reported $6,800 in research payments for these studies, mostly to the institutions running them.
- Effectiveness of the EMPOWER™ Modular Pacing System and EMBLEM™ Subcutaneous ICD to Communicate Antitachycardia Pacing
Boston Scientific Corporation · Active, not recruiting · NCT04798768
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.