Jonathan J. Fillmore, MD
NPI 1578592713ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Trumbull, CT
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Trumbull, Connecticut, trained at Js Weill Medical College, Cornell University (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $3,146,632 for 6,573 claims, against $86,043 paid for services in 2024. Novo Nordisk Inc was the largest of 14 companies reporting payments in 2025, $1,061 in all, mostly food and beverage.
Overview
| NPI | 1578592713 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 1, 2006 |
| Last updated in NPPES | Dec 9, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 039461 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 304 |
|---|---|
| Services billed | 2,524 across 14 procedure codes |
| Paid by Medicare | $86,043 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,573 · 14,146 30-day fills |
|---|---|
| Patients | 717 |
| Total drug cost | $3,146,632 |
| Generic share | 43% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Endocrinology |
Medical groups
- Prospect CT Medical Foundation IncManchester, CT · 282 clinicians
- Uconn Health Community Network Medical Group, Inc.Waterbury, CT · 78 clinicians
Hospital affiliations
- Griffin HospitalDerby, CT
- Saint Mary's HospitalWaterbury, CT
- Waterbury HospitalWaterbury, CT
Industry payments (Open Payments)
- 2025$1,061 · 36 payments from 14 companies
- 2024$2,577 · 142 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $371.78 | 16 |
| Lilly USA, LLC | $266.91 | 4 |
| Xeris Pharmaceuticals, Inc. | $129.00 | 1 |
| Amgen Inc. | $68.35 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $46.29 | 3 |
What the 2025 payments were for
- Food and Beverage$1,055 · 35 payments
- Education$6.65 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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