Thomas Sample Bailey Jr., MD
NPI 1598714818ActiveIndividual· Obstetrics & Gynecology· Mission Viejo, CA
Obstetrics & Gynecology (MD) in Mission Viejo, California, trained at University of Arizona College of Medicine (class of 1971). Their prescriptions cost Medicare Part D more than their services did: $57,436 for 642 claims, against $11,327 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 10 companies reporting payments in 2025, $688.02 in all, mostly food and beverage.
Overview
| NPI | 1598714818 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 6, 2006 |
| Last updated in NPPES | Oct 15, 2021 |
| Certified by provider | Oct 15, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | G22648 | CA |
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) | Enrolled Practitioner - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 95 |
|---|---|
| Services billed | 251 across 30 procedure codes |
| Paid by Medicare | $11,327 |
Part D prescriptions in 2024
| Prescriptions (claims) | 642 · 1,614 30-day fills |
|---|---|
| Patients | 132 |
| Total drug cost | $57,436 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Arizona College of Medicine |
|---|---|
| Graduation year | 1971 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence Mission HospitalMission Viejo, CA
Industry payments (Open Payments)
- 2025$688.02 · 17 payments from 10 companies
- 2024$370.89 · 8 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $314.27 | 6 |
| Janssen Pharmaceuticals, Inc | $143.75 | 1 |
| Sumitomo Pharma America, Inc. | $44.92 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $42.69 | 2 |
| Pfizer Inc. | $31.94 | 1 |
What the 2025 payments were for
- Food and Beverage$688.02 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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