Loren Castellon, MD
NPI 1114555612ActiveIndividual· Obstetrics & Gynecology· Santa Monica, CA
Obstetrics & Gynecology (MD) in Santa Monica, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2020). Their prescriptions cost Medicare Part D more than their services did: $3,621 for 35 claims, against $1,846 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 10 companies reporting payments in 2025, $740.70 in all, mostly food and beverage.
Overview
| NPI | 1114555612 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 30, 2020 |
| Last updated in NPPES | Sep 25, 2024 |
| Certified by provider | Sep 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | A197013 | 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 - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 24 across 10 procedure codes |
| Paid by Medicare | $1,846 |
Part D prescriptions in 2024
| Prescriptions (claims) | 35 · 63 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $3,621 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 2020 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Providence Saint Johns Medical FoundationSanta Monica, CA · 281 clinicians
Hospital affiliation
- Saint John's Health CenterSanta Monica, CA
Industry payments (Open Payments)
- 2025$740.70 · 43 payments from 10 companies
- 2024$29.09 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $197.36 | 15 |
| Sage Therapeutics, LLC | $150.32 | 7 |
| Sumitomo Pharma America, Inc. | $111.33 | 5 |
| Hologic Sales and Service, LLC | $100.66 | 4 |
| Supernus Pharmaceuticals, Inc. | $39.04 | 2 |
What the 2025 payments were for
- Food and Beverage$740.70 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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