Dr. David J. Clardy, MD
Cardiology (Cardiovascular Disease Physician)
- Medicare participating
At a glance
- Medical school
- Washington University School of Medicine (1977)
- Years since graduation
- 49
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 3,012
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
- 1977Medical school: Washington University School of Medicine
- 2006Registered 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
-
Cardiovascular Disease Physician primary
ND license 6001
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Sanford Medical Center Fargo Fargo, ND
- Prairie Ridge Hospital and Health Services Elbow Lake, MN
- Perham Health Perham, MN
- Sanford Mayville Mayville, ND
- Sanford Hillsboro Hillsboro, ND
Medical groups
- Sanford Medical Center Fargo (1,225 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
- 3,012
- Services billed
- 5,140
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 2,706 | 2,172 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 729 | 711 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician | 210 | 207 |
| Established patient office or other outpatient visit, 20-29 minutes | 184 | 155 |
| Ultrasound of heart blood flow, valves and chambers, follow-up | 167 | 160 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 167 | 160 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | 152 | 151 |
| Ultrasound of heart, follow-up | 89 | 86 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 88 | 53 |
| Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan | 81 | 81 |
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 |
|---|---|
| Jantoven (warfarin sodium) Other prescribers in Fargo, ND | 254 |
| Warfarin Sodium Other prescribers in Fargo, ND | 169 |
| Metoprolol Succinate Other prescribers in Fargo, ND | 103 |
| Atorvastatin Calcium Other prescribers in Fargo, ND | 86 |
| Eliquis (apixaban) Other prescribers in Fargo, ND | 73 |
| Carvedilol Other prescribers in Fargo, ND | 65 |
| Lisinopril Other prescribers in Fargo, ND | 56 |
| Metoprolol Tartrate Other prescribers in Fargo, ND | 49 |
| Enoxaparin Sodium Other prescribers in Fargo, ND | 44 |
| Rosuvastatin Calcium Other prescribers in Fargo, ND | 39 |
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, 1 companies reported 1 payments worth $100 in total to this clinician.
| Pfizer Inc. | $100 |
|---|
| Food and Beverage | $100 |
|---|
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 $17,520 in research payments for these studies, mostly to the institutions running them.
- TRANSFORM
Cleerly, Inc.
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.