Dr. Mark D. Widmann, MD
Cardiothoracic Surgery (Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician)
- Medicare participating
At a glance
- Medical school
- Yale University School of Medicine (1987)
- Years since graduation
- 39
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 421
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
- 1987Medical school: Yale 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
-
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician primary
NJ license 25MA06311100
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Morristown Medical Center Morristown, NJ
- Overlook Medical Center Summit, NJ
- Chilton Medical Center Pompton Plains, NJ
- Newton Medical Center Newton, NJ
- Ahs Hospital Corp Hackettstown, NJ
Medical groups
- Practice Associates 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
- 421
- Services billed
- 1,591
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 40-54 minutes | 203 | 158 |
| New patient office or other outpatient visit, 60-74 minutes | 193 | 193 |
| Diagnostic exam of lung airway using an endoscope | 164 | 162 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 129 | 87 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 81 | 79 |
| Established patient office or other outpatient visit, 30-39 minutes | 77 | 70 |
| Removal of lymph nodes of chest cavity using an endoscope | 72 | 72 |
| Established patient office or other outpatient visit, 20-29 minutes | 57 | 54 |
| Initial removal of wedge of lung tissue using an endoscope | 41 | 41 |
| Exam of lung with removal of lung lobe using an endoscope | 40 | 40 |
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 |
|---|---|
| Amoxicillin-Clavulanate Potass (amoxicillin/potassium clav) Other prescribers in Morristown, NJ | 12 |
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, 7 companies reported 22 payments worth $16,379 in total to this clinician.
| Ethicon US, LLC | $10,510 |
|---|---|
| Medical Device Business Services, Inc. | $4,611 |
| On Target Laboratories, Inc | $885 |
| Davol Inc. | $301 |
| Medtronic, Inc. | $31.46 |
| Merck Sharp & Dohme LLC | $21.74 |
| Galvanize Therapeutics, Inc | $19.07 |
| Consulting Fee | $13,420 |
|---|---|
| Travel and Lodging | $1,480 |
| Food and Beverage | $979 |
| Compensation for services other than consulting (speaking, faculty) | $500 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Ethicon US, LLC Dec 8, 2025 | Consulting Fee | $10,370 |
| Medical Device Business Services, Inc. Feb 12, 2025 | Consulting Fee | $3,050 |
| Medical Device Business Services, Inc. Oct 9, 2025 | Travel and Lodging Echelon Flex · Surgery-Bariatric · travel to CINCINNATI, OH · in-kind | $725 |
| On Target Laboratories, Inc Aug 28, 2025 | Compensation for services other than consulting (speaking, faculty) Cytalux · Oncology | $500 |
| Medical Device Business Services, Inc. Oct 9, 2025 | Travel and Lodging Echelon Flex · Surgery-Bariatric · travel to CINCINNATI, OH · in-kind | $357 |
| Medical Device Business Services, Inc. Oct 9, 2025 | Travel and Lodging Echelon Flex · Surgery-Bariatric · travel to CINCINNATI, OH · in-kind | $259 |
| Ethicon US, LLC Dec 8, 2025 | Travel and Lodging travel to MORRISTOWN, NJ | $140 |
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.