Dr. Jonathan Koff, M.D.
Pulmonology (Pulmonary Disease Physician)
- Medicare participating
At a glance
- Medical school
- Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (2000)
- Years since graduation
- 26
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 86
Licensed in Connecticut since 2011, 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
- 2000Medical school: Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
- 2007Registered 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
-
Pulmonary Disease Physician primary
CT license 049721 (first issued 2011; active) · CA license A82796 -
Critical Care Medicine (Internal Medicine) Physician
CA license A82796 · CT license 049721 (first issued 2011; active)
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
Medical groups
- Yale University (2,645 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
- 86
- Services billed
- 243
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 60 | 23 |
| Critical care, first 30-74 minutes | 37 | 16 |
| Test to measure expiratory airflow and volume | 18 | 16 |
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 |
|---|---|
| Trikafta (elexacaftor/tezacaftor/ivacaft) | 48 |
| Azithromycin Other prescribers in New Haven, CT | 17 |
| Kalydeco (ivacaftor) | 14 |
| Omeprazole Other prescribers in New Haven, CT | 14 |
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 $27.86 in total to this clinician.
| Vertex Pharmaceuticals Incorporated | $27.86 |
|---|
| Food and Beverage | $27.86 |
|---|
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 2 industry-funded studies in 2025, from 2 companies. The companies reported $64,790 in research payments for these studies, mostly to the institutions running them.
- I-SPY Trial (Investigation of Serial Studies to Predict Your Therapeutic Response With Imaging And moLecular Analysis 2)
Jazz Pharmaceuticals Inc. - I-SPY TRIAL: Neoadjuvant and Personalized Adaptive Novel Agents to Treat Breast Cancer
Regeneron Pharmaceuticals, Inc. · Recruiting · NCT01042379
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.