Diorella Guloy, DO
NPI 1477782597ActiveIndividual· Hospitalist· Berwyn, IL
Hospitalist (DO) with Loyola Medical Group LLC, practicing in Berwyn, Illinois. 120 Medicare patients in 2024, $30,036 paid; nearly all of their 222 Part D prescriptions were generic (92%). Merck Sharp & Dohme LLC was the largest of 3 companies reporting payments in 2025, $338.41 in all, mostly food and beverage. Lists Loyola University Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1477782597 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 10, 2009 |
| Last updated in NPPES | Jun 11, 2024 |
| Certified by provider | Jun 11, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 036129072 | IL |
| Internal Medicine | 207R00000X | 036129072 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 120 |
|---|---|
| Services billed | 368 across 6 procedure codes |
| Paid by Medicare | $30,036 |
Part D prescriptions in 2024
| Prescriptions (claims) | 222 · 252 30-day fills |
|---|---|
| Patients | 96 |
| Total drug cost | $6,281 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Loyola Medical Group LLCBerwyn, IL · 127 clinicians
Hospital affiliations
- Loyola University Medical CenterMaywood, IL
- Macneal HospitalBerwyn, IL
Industry payments (Open Payments)
- 2025$338.41 · 10 payments from 3 companies
- 2024$185.25 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $190.04 | 5 |
| Melinta Therapeutics, LLC | $118.52 | 4 |
| Abbvie Inc. | $29.85 | 1 |
What the 2025 payments were for
- Food and Beverage$338.41 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hospitalists in Berwyn
- 1235382011
- 1063409795
- 1396024972