Carlos S. Castillo, MD
NPI 1659358620ActiveIndividual· Psychiatry & Neurology, Psychiatry· Green Bay, WI
Psychiatry & Neurology, Psychiatry (MD) with Northwest Iowa Mental Health Center, practicing in Green Bay, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $44,420 for 827 claims, against $5,504 paid for services in 2024. Lists Spencer Municipal Hospital as a hospital affiliation.
Overview
| NPI | 1659358620 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 29, 2005 |
| Last updated in NPPES | Oct 17, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 49029 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychiatry (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 18 |
|---|---|
| Services billed | 94 across 3 procedure codes |
| Paid by Medicare | $5,504 |
Part D prescriptions in 2024
| Prescriptions (claims) | 827 · 862 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $44,420 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Northwest Iowa Mental Health CenterEstherville, IA · 18 clinicians
Hospital affiliation
- Spencer Municipal HospitalSpencer, IA
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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