Dr. Hal S. Wasserman, M.D.
Interventional Cardiology (Interventional Cardiology Physician)
- Medicare participating
At a glance
- Medical school
- Columbia University College of Physicians and Surgeons (1982)
- Years since graduation
- 44
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 154
Licensed in Connecticut since 2004, according to the Connecticut Department of Public Health. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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
- 1982Medical school: Columbia University College of Physicians and Surgeons
- 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
-
Interventional Cardiology Physician primary
CT license 042816 (first issued 2004; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Danbury Hospital Danbury, CT
Medical groups
- Nuvance Health Medical Practice Ct Inc (747 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
- 154
- Services billed
- 422
- Patients’ average age
- 78
| Service | Times | Patients |
|---|---|---|
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 76 | 71 |
| Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist | 38 | 37 |
| Established patient office or other outpatient visit, 20-29 minutes | 28 | 28 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 24 | 16 |
| Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch | 24 | 21 |
| Insertion of tube in coronary artery for diagnosis with review by radiologist | 20 | 20 |
| New patient office or other outpatient visit, 45-59 minutes | 18 | 18 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 17 | 17 |
| Insertion of tube in right heart chambers and coronary artery for diagnosis with review by radiologist | 15 | 15 |
| Replacement of aortic valve through the skin and femoral artery | 14 | 14 |
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.
Payments from drug and device companies
In 2025, 4 companies reported 16 payments worth $442 in total to this clinician.
| Edwards Lifesciences Corporation | $260 |
|---|---|
| Medtronic, Inc. | $72.83 |
| Novartis Pharmaceuticals Corporation | $60.07 |
| E.r. Squibb & Sons, L.l.c. | $49.25 |
| Food and Beverage | $442 |
|---|
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 $63,428 in research payments for these studies, mostly to the institutions running them.
- Delivery SSO2 Therapy for 60 Min in Anterior MI Patients With PCI ≤ 6 Hours of Symptoms Onset Compared to Standard.
Zoll Circulation Inc · Terminated · NCT04743245
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.