Dennis S. Chi, MD
NPI 1245215565ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· New York, NY
Obstetrics & Gynecology, Gynecologic Oncology (MD) in New York, New York, trained at New York University School of Medicine (class of 1990). 233 Medicare patients in 2024, $136,857 paid; nearly all of their 81 Part D prescriptions were generic (96%). Dilon Technologies, Inc. was the largest of 3 companies reporting payments in 2025, $398.90 in all, mostly food and beverage.
Overview
| NPI | 1245215565 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 9, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | 187616 | NY |
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 - Gynecological Oncology (NJ); Practitioner - Gynecological Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 233 |
|---|---|
| Services billed | 544 across 61 procedure codes |
| Paid by Medicare | $136,857 |
Part D prescriptions in 2024
| Prescriptions (claims) | 81 · 90 30-day fills |
|---|---|
| Patients | 40 |
| Total drug cost | $1,483 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Gynecological Oncology |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Medical groups
- Mskcc Surgery GroupNew York, NY · 369 clinicians
- Msk BergenMontvale, NJ · 255 clinicians
Other facilities
- Vns of Ny Home Care ChhaHome health agency · New York, NY
Industry payments (Open Payments)
- 2025$398.90 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dilon Technologies, Inc. | $175.27 | 1 |
| Medtronic, Inc. | $166.77 | 1 |
| Davol Inc. | $56.86 | 1 |
What the 2025 payments were for
- Food and Beverage$398.90 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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