Theresa Marie Castillejo
NPI 1326757840ActiveIndividual· Nurse Practitioner, Family· West Hartford, CT
Nurse Practitioner, Family with Hartford Healthcare Medical Group Specialists PLLC and 1 other group, practicing in West Hartford, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $199,143 for 390 claims, against $11,449 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $834.31 in all, mostly food and beverage. Lists Hartford Hospital as a hospital affiliation.
Overview
| NPI | 1326757840 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Nov 23, 2022 |
| Last updated in NPPES | Nov 29, 2022 |
| Certified by provider | Nov 29, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 11283 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 66 |
|---|---|
| Services billed | 193 across 9 procedure codes |
| Paid by Medicare | $11,449 |
Part D prescriptions in 2024
| Prescriptions (claims) | 390 · 564 30-day fills |
|---|---|
| Patients | 103 |
| Total drug cost | $199,143 |
| Generic share | 61% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT · 1,588 clinicians
- Hartford HospitalHartford, CT · 1,044 clinicians
Hospital affiliation
- Hartford HospitalHartford, CT
Industry payments (Open Payments)
- 2025$834.31 · 42 payments from 8 companies
- 2024$1,228 · 65 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $501.78 | 27 |
| Axsome Therapeutics, Inc. | $98.39 | 4 |
| Pfizer Inc. | $68.81 | 3 |
| Lundbeck LLC | $49.05 | 2 |
| Teva Pharmaceuticals USA, Inc. | $46.34 | 2 |
What the 2025 payments were for
- Food and Beverage$834.31 · 42 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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