Shannon Gritzenbach, MD
NPI 1427180447ActiveIndividual· Psychiatry & Neurology, Psychiatry· Downers Grove, IL
Opted out of Medicare from January 2024 to January 2028. Psychiatry & Neurology, Psychiatry (MD) in Downers Grove, Illinois, licensed in IL, with an NPI issued in March 2007.
Overview
| NPI | 1427180447 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 12, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 36-111910 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jan 1, 2024 – Jan 1, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
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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