Konstantin Peysin, D.O.
NPI 1649513144ActiveIndividual· Internal Medicine, Gastroenterology· Brooklyn, NY
Internal Medicine, Gastroenterology (D.O.) with Century Medical and Dental Center Inc and 1 other group, practicing in Brooklyn, New York. Their prescriptions cost Medicare Part D more than their services did: $3,774,195 for 4,734 claims, against $120,463 paid for services in 2024. Ardelyx, Inc. was the largest of 9 companies reporting payments in 2025, $1,050 in all, mostly food and beverage.
Overview
| NPI | 1649513144 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Apr 3, 2013 |
| Last updated in NPPES | Jul 3, 2020 |
| Certified by provider | Jul 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 284024 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 370 |
|---|---|
| Services billed | 1,041 across 27 procedure codes |
| Paid by Medicare | $120,463 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,734 · 5,017 30-day fills |
|---|---|
| Patients | 563 |
| Total drug cost | $3,774,195 |
| Generic share | 37% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Century Medical and Dental Center IncBrooklyn, NY · 109 clinicians
- Triborough Gi PLLCBrooklyn, NY · 15 clinicians
Industry payments (Open Payments)
- 2025$1,050 · 41 payments from 9 companies
- 2024$1,457 · 76 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $431.76 | 23 |
| Madrigal Pharmaceuticals | $294.68 | 2 |
| Abbvie Inc. | $62.93 | 3 |
| Phathom Pharmaceuticals, Inc. | $57.99 | 5 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $54.26 | 3 |
What the 2025 payments were for
- Food and Beverage$1,050 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Brooklyn
- 1043221450
- 1043290513
- 1043655921
- 1053312645
- 1053775023
- 1063742534
- 1063776771
- 1073856720
- 1083664627
- 1093235103
- 1093866386
- 1104816685
All 233 gastroenterologists in Brooklyn · All gastroenterologists in New York