Zachary Benjamin Koloff, MD
NPI 1770996175ActiveIndividual· Urology· Stoneham, MA
Urology (MD) in Stoneham, Massachusetts, trained at University of Michigan Medical School (class of 2014). In 2024 Medicare paid $212,911 for 548 patients, and Part D covered 1,352 of their prescriptions, 89% of them generic. Calyxo, Inc. was the largest of 9 companies reporting payments in 2025, $393.70 in all, mostly food and beverage.
Overview
| NPI | 1770996175 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 4, 2014 |
| Last updated in NPPES | Sep 9, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 279101 | MA |
| Student in an Organized Health Care Education/Training Program | 390200000X | 4301105086 | MI |
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 - Urology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 548 |
|---|---|
| Services billed | 8,193 across 78 procedure codes |
| Paid by Medicare | $212,911 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,352 · 3,174 30-day fills |
|---|---|
| Patients | 381 |
| Total drug cost | $146,154 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Beth Israel Lahey Health Specialty Care, Inc.Burlington, MA · 267 clinicians
Hospital affiliations
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA
- Northeast Hospital CorporationBeverly, MA
- Winchester HospitalWinchester, MA
Industry payments (Open Payments)
- 2025$393.70 · 12 payments from 9 companies
- 2024$347.81 · 10 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calyxo, Inc. | $137.67 | 1 |
| Ferring Pharmaceuticals Inc. | $50.80 | 2 |
| Urogen Pharma, Inc. | $41.21 | 2 |
| Teleflex LLC | $33.31 | 1 |
| Coloplast Corp | $32.40 | 2 |
What the 2025 payments were for
- Food and Beverage$393.70 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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