Maria O. Ortiz Castillo, M.D.
NPI 1811298516ActiveIndividual· Hospitalist· Pasadena, CA
Hospitalist (M.D.) in Pasadena, California, trained at University of California, Geffen School of Medicine (class of 2010). In 2024 Medicare paid $43,538 for 134 patients, and Part D covered 164 of their prescriptions, 87% of them generic.
Overview
| NPI | 1811298516 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 11, 2010 |
| Last updated in NPPES | Jul 15, 2026 |
| Certified by provider | Jul 15, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A121001 | CA |
| Internal Medicine | 207R00000X | A121001 | CA |
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 (CA); Practitioner - Internal Medicine (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 134 |
|---|---|
| Services billed | 597 across 7 procedure codes |
| Paid by Medicare | $43,538 |
Part D prescriptions in 2024
| Prescriptions (claims) | 164 · 175 30-day fills |
|---|---|
| Patients | 60 |
| Total drug cost | $20,729 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Internal Medicine |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Other facilities
- Red Star Home Health Care, IncHome health agency · Burbank, CA
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 33 hospitalists in Pasadena · All hospitalists in California