Crystal Ilke Tuncay, DO
NPI 1992790414ActiveIndividual· Internal Medicine· Valparaiso, IN
Internal Medicine (DO) in Valparaiso, Indiana, trained at Midwestern University, Chicago College of Osteopathic Med (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $831,032 for 6,916 claims, against $129,087 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 24 companies reporting payments in 2025, $2,101 in all, mostly food and beverage.
Overview
| NPI | 1992790414 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Sep 12, 2005 |
| Last updated in NPPES | Sep 28, 2020 |
| Certified by provider | Sep 28, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 02003668A | IN |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 373 |
|---|---|
| Services billed | 2,786 across 45 procedure codes |
| Paid by Medicare | $129,087 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,916 · 15,700 30-day fills |
|---|---|
| Patients | 543 |
| Total drug cost | $831,032 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Emergency Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Community Care Network IncMunster, IN · 379 clinicians
- Chesterton Physical Therapy IncChesterton, IN · 186 clinicians
- Porter Physician Services LLCValparaiso, IN · 99 clinicians
Hospital affiliations
- Franciscan Health Crown PointCrown Point, IN
- Franciscan Health Michigan CityMichigan City, IN
- Northwest Health - PorterValparaiso, IN
- St Catherine Hospital IncEast Chicago, IN
- St Mary Medical Center IncHobart, IN
Other facilities
- Elara CaringHome health agency · Valparaiso, IN
- Powers Home Health ServicesHome health agency · Hobart, IN
- Vitas Healthcare Corporation of IllinoisHospice · Tinley Park, IL
- Powers Health Rehabilitation CenterInpatient rehabilitation facility · Crown Point, IN
Industry payments (Open Payments)
- 2025$2,101 · 115 payments from 24 companies
- 2024$2,319 · 124 payments from 30 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $321.76 | 24 |
| Abbvie Inc. | $291.29 | 18 |
| Novo Nordisk Inc | $205.86 | 8 |
| Amgen Inc. | $204.51 | 17 |
| Bayer Healthcare Pharmaceuticals Inc. | $146.13 | 4 |
What the 2025 payments were for
- Food and Beverage$2,101 · 115 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Valparaiso · All internal medicine physicians in Indiana