William Tatsuo Kasumi, M.D.
NPI 1649342627ActiveIndividual· Internal Medicine· Hackensack, NJ
Internal Medicine (M.D.) in Hackensack, New Jersey, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $27,994 for 469 claims, against $15,683 paid for services in 2024. Pfizer Inc. reported $22.75 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1649342627 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 14, 2006 |
| Last updated in NPPES | May 25, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA06876200 | NJ |
| Internal Medicine | 207R00000X | 210028 | 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 (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 259 across 30 procedure codes |
| Paid by Medicare | $15,683 |
Part D prescriptions in 2024
| Prescriptions (claims) | 469 · 1,074 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $27,994 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Family Practice |
Hospital affiliation
- Hackensack University Medical CenterHackensack, NJ
Industry payments (Open Payments)
- 2024$22.75 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $22.75 | 1 |
What the 2024 payments were for
- Food and Beverage$22.75 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Hackensack
- 1679865109
- 1043117021
- 1841433729
- 1619849866
- 1922573740
- 1194646828
- 1497408991
- 1922148667
- 1710431101
- 1629304290
- 1790469856
- 1083305197