Oliver Pimentel Diamante, M.D
NPI 1669781050ActiveIndividual· Internal Medicine, Infectious Disease· Valparaiso, IN
Internal Medicine, Infectious Disease (M.D) with Infectious Disease Specialists PC, practicing in Valparaiso, Indiana. Their prescriptions cost Medicare Part D more than their services did: $478,704 for 868 claims, against $181,175 paid for services in 2024. Viiv Healthcare Company was the largest of 7 companies reporting payments in 2025, $321.70 in all, mostly food and beverage. Lists Community Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1669781050 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | Yes |
| NPI issued | Oct 1, 2010 |
| Last updated in NPPES | Sep 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 01074730A | IN |
| Internal Medicine | 207R00000X | MT197688 | PA |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 629 |
|---|---|
| Services billed | 11,159 across 22 procedure codes |
| Paid by Medicare | $181,175 |
Part D prescriptions in 2024
| Prescriptions (claims) | 868 · 910 30-day fills |
|---|---|
| Patients | 321 |
| Total drug cost | $478,704 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Infectious Disease |
Medical group
- Infectious Disease Specialists PCValparaiso, IN · 11 clinicians
Hospital affiliations
- Community HospitalMunster, IN
- Methodist Hospitals IncGary, IN
- Northwest Health - PorterValparaiso, IN
- St Catherine Hospital IncEast Chicago, IN
- St Mary Medical Center IncHobart, IN
Other facilities
- Accentcare Home Health of IndianaHome health agency · Crown Point, IN
- Powers Home Health ServicesHome health agency · Hobart, IN
Industry payments (Open Payments)
- 2025$321.70 · 11 payments from 7 companies
- 2024$341.80 · 16 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $99.84 | 1 |
| Abbvie Inc. | $87.09 | 3 |
| Aimmune Therapeutics, Inc. | $46.28 | 2 |
| Merck Sharp & Dohme LLC | $35.27 | 2 |
| Theratechnologies Inc. | $18.56 | 1 |
What the 2025 payments were for
- Food and Beverage$321.70 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other infectious disease specialists in Valparaiso
- 1053722934
- 1750363206