Tresa Reena Mascarenhas, MBBS
NPI 1477846079ActiveIndividual· Internal Medicine, Infectious Disease· Newark, DE
Internal Medicine, Infectious Disease (MBBS) with Infectious Disease Consultants PA, practicing in Newark, Delaware. Their prescriptions cost Medicare Part D more than their services did: $799,147 for 603 claims, against $104,569 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 5 companies reporting payments in 2025, $210.14 in all, mostly food and beverage. Lists Bayhealth Medical Center, Kent Campus and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1477846079 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MBBS |
| Sole proprietor | No |
| NPI issued | May 16, 2011 |
| Last updated in NPPES | Feb 25, 2021 |
| Certified by provider | Feb 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | C10011090 | DE |
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 - Infectious Disease (DE); Practitioner - Infectious Disease (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 324 |
|---|---|
| Services billed | 1,714 across 13 procedure codes |
| Paid by Medicare | $104,569 |
Part D prescriptions in 2024
| Prescriptions (claims) | 603 · 689 30-day fills |
|---|---|
| Patients | 96 |
| Total drug cost | $799,147 |
| Generic share | 67% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical group
- Infectious Disease Consultants PANewark, DE · 10 clinicians
Hospital affiliations
- Bayhealth Medical Center, Kent CampusDover, DE
- Christiana HospitalNewark, DE
- St Francis HospitalWilmington, DE
- Union Hospital of Cecil CountyElkton, MD
Industry payments (Open Payments)
- 2025$210.14 · 8 payments from 5 companies
- 2024$232.41 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $78.76 | 3 |
| Insmed, Inc. | $45.25 | 2 |
| Aimmune Therapeutics, Inc. | $37.61 | 1 |
| Gilead Sciences, Inc. | $26.12 | 1 |
| Viiv Healthcare Company | $22.40 | 1 |
What the 2025 payments were for
- Food and Beverage$158.74 · 6 payments
- Education$51.40 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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