Justin K. To, MD
NPI 1457589863ActiveIndividual· Obstetrics & Gynecology· Bronx, NY
Obstetrics & Gynecology (MD) in Bronx, New York, trained at State University of New York at Stony Brook, School of Medicine (class of 2005). Mostly services rather than prescriptions: Medicare paid $6,578 for 13 patients in 2024, with only 15 Part D claims. Intuitive Surgical, Inc. was the largest of 3 companies reporting payments in 2025, $1,978 in all, mostly education.
Overview
| NPI | 1457589863 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 24, 2009 |
| Last updated in NPPES | Jan 29, 2026 |
| Certified by provider | Jan 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 253521 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 30 across 12 procedure codes |
| Paid by Medicare | $6,578 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15 · 18 30-day fills |
|---|---|
| Total drug cost | $455.71 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Mmc OB/GYN Faculty Practice PlanBrooklyn, NY · 32 clinicians
Hospital affiliation
- Maimonides Medical CenterBrooklyn, NY
Industry payments (Open Payments)
- 2025$1,978 · 9 payments from 3 companies
- 2024$6,041 · 26 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $1,893 | 6 |
| Sumitomo Pharma America, Inc. | $51.96 | 2 |
| Medtronic, Inc. | $33.79 | 1 |
What the 2025 payments were for
- Education$1,000 · 1 payment
- Travel and Lodging$726.60 · 4 payments
- Food and Beverage$251.72 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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