Dr. Peter W. Marks, MD
Medical Oncology (Medical Oncology Physician)
At a glance
- In the NPI registry since
- 2006
Licensed in Connecticut since 2006, 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
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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
-
Medical Oncology Physician primary
CT license 044140 (first issued 2006; active) -
Hematology (Internal Medicine) Physician
CT license 004140
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Payments from drug and device companies
In 2025, 1 companies reported 9 payments worth $577,600 in total to this clinician.
| Eli Lilly and Company | $577,600 |
|---|
| Consulting Fee | $577,600 |
|---|
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Eli Lilly and Company Jun 25, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $104,000 |
| Eli Lilly and Company Jul 2, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $64,000 |
| Eli Lilly and Company Jul 23, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $64,000 |
| Eli Lilly and Company Aug 21, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $64,000 |
| Eli Lilly and Company Aug 5, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $64,000 |
| Eli Lilly and Company Sep 4, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $64,000 |
| Eli Lilly and Company Oct 1, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $64,000 |
| Eli Lilly and Company Sep 16, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $57,600 |
| Eli Lilly and Company Oct 8, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $32,000 |
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.