Mary N. Tilak, MD
NPI 1518054352ActiveIndividual· Internal Medicine· Munster, IN
Internal Medicine (MD) with Dr Mary Tilak PC and 1 other group, practicing in Munster, Indiana. Their prescriptions cost Medicare Part D more than their services did: $795,727 for 4,034 claims, against $321,160 paid for services in 2024. Lists Community Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1518054352 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 5, 2006 |
| Last updated in NPPES | Apr 24, 2026 |
| Certified by provider | Apr 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 01054662A | 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 | 631 |
|---|---|
| Services billed | 5,825 across 59 procedure codes |
| Paid by Medicare | $321,160 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,034 · 9,021 30-day fills |
|---|---|
| Patients | 541 |
| Total drug cost | $795,727 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Dr Mary Tilak PCCrown Point, IN · 10 clinicians
- Indigo Partners LLCMunster, IN · 3 clinicians
Hospital affiliations
- Community HospitalMunster, IN
- Franciscan Health MunsterMunster, IN
- Methodist Hospitals IncGary, IN
- St Catherine Hospital IncEast Chicago, IN
- St Mary Medical Center IncHobart, IN
Other facilities
- Powers Home Health ServicesHome health agency · Hobart, IN
- Powers Health Rehabilitation CenterInpatient rehabilitation facility · Crown Point, IN
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 48 internal medicine physicians in Munster · All internal medicine physicians in Indiana