Simon Andres Castro Montenegro, MD
NPI 1144725029ActiveIndividual· Internal Medicine· Bridgeport, CT
Internal Medicine (MD) with Hartford Healthcare Medical Group Specialists PLLC, practicing in Bridgeport, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $54,296 for 248 claims, against $7,906 paid for services in 2024. Abbott Laboratories was the largest of 6 companies reporting payments in 2025, $169.62 in all, mostly food and beverage. Lists Hartford Hospital as a hospital affiliation.
Overview
| NPI | 1144725029 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 24, 2018 |
| Last updated in NPPES | Sep 29, 2021 |
| Certified by provider | Sep 29, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 69555 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 51 |
|---|---|
| Services billed | 102 across 7 procedure codes |
| Paid by Medicare | $7,906 |
Part D prescriptions in 2024
| Prescriptions (claims) | 248 · 293 30-day fills |
|---|---|
| Patients | 62 |
| Total drug cost | $54,296 |
| Generic share | 56% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT · 1,588 clinicians
Hospital affiliation
- Hartford HospitalHartford, CT
Industry payments (Open Payments)
- 2025$169.62 · 7 payments from 6 companies
- 2024$174.44 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $43.50 | 2 |
| Alexion Pharmaceuticals, Inc. | $30.63 | 1 |
| Mallinckrodt Hospital Products Inc. | $27.10 | 1 |
| E.R. Squibb & Sons, L.L.C. | $26.07 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $24.88 | 1 |
What the 2025 payments were for
- Food and Beverage$169.62 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 146 internal medicine physicians in Bridgeport · All internal medicine physicians in Connecticut