Dr. Mitchell B. Clark, MD
Gynecologic Oncology (Gynecologic Oncology Physician)
- Medicare participating
At a glance
- Years since graduation
- 6
- In the NPI registry since
- 2013
- Medicare patients seen, 2024
- 175
Licensed in Connecticut since 2020, 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. What an NPI is
Education and training
- 2013Registered with an NPI (national billing number; not a license date)
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
-
Gynecologic Oncology Physician primary
CT license 65152 (first issued 2020; active) - Student in an Organized Health Care Education/Training Program
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Yale-New Haven Hospital New Haven, CT
- Bridgeport Hospital Bridgeport, CT
- Stamford Hospital Stamford, CT
Medical groups
- Yale University (2,645 clinicians)
- Stamford Health Medical Group Inc (444 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
- 175
- Services billed
- 439
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 172 | 98 |
| Established patient office or other outpatient visit, 10-19 minutes | 72 | 55 |
| New patient office or other outpatient visit, 30-44 minutes | 32 | 32 |
| New patient office or other outpatient visit, 45-59 minutes | 13 | 13 |
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, 2 companies reported 9 payments worth $6,751 in total to this clinician.
| AbbVie Inc. | $6,711 |
|---|---|
| Merck Sharp & Dohme LLC | $40.61 |
| Consulting Fee | $6,163 |
|---|---|
| Food and Beverage | $369 |
| Travel and Lodging | $220 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| AbbVie Inc. Dec 19, 2025 | Consulting Fee ELAHERE · ONCOLOGY | $3,625 |
| AbbVie Inc. Dec 19, 2025 | Consulting Fee ELAHERE · ONCOLOGY | $1,088 |
| AbbVie Inc. Apr 16, 2025 | Consulting Fee ELAHERE · ONCOLOGY | $725 |
| AbbVie Inc. Dec 23, 2025 | Consulting Fee ELAHERE · ONCOLOGY | $725 |
| AbbVie Inc. Oct 30, 2025 | Travel and Lodging ELAHERE · ONCOLOGY · travel to PHILADELPHIA, PA · in-kind | $220 |
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.