Susanthi Gunadasa, MD, MBBS
NPI 1639331861ActiveIndividual· Internal Medicine· Hackensack, NJ
Internal Medicine (MD, MBBS) in Hackensack, New Jersey, licensed in NJ, with an NPI issued in June 2008. Their prescriptions cost Medicare Part D more than their services did: $630,839 for 8,561 claims, against $241,272 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 4 companies reporting payments in 2025, $103.53 in all, mostly food and beverage. Lists Hackensack University Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1639331861 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MBBS |
| Sole proprietor | Yes |
| NPI issued | Jun 29, 2008 |
| Last updated in NPPES | Aug 29, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA09346600 | NJ |
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 | 385 |
|---|---|
| Services billed | 2,500 across 35 procedure codes |
| Paid by Medicare | $241,272 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,561 · 9,423 30-day fills |
|---|---|
| Patients | 346 |
| Total drug cost | $630,839 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Hospital affiliations
- Hackensack University Medical CenterHackensack, NJ
- Holy Name Medical CenterTeaneck, NJ
- Valley HospitalParamus, NJ
Other facilities
- Amedisys Home HealthHome health agency · Hackensack, NJ
- Visiting Health Services of New JerseyHome health agency · Woodland Park, NJ
- Ascend HospiceHospice · Cranford, NJ
- Grace Healthcare Services LLCHospice · Edison, NJ
- Vhs Hospice Services of New JerseyHospice · Woodland Park, NJ
- Allendale Rehabilitation and Healthcare CenterNursing home · Allendale, NJ
- Careone at New MilfordNursing home · New Milford, NJ
- Careone at OradellNursing home · Oradell, NJ
- Careone at TeaneckNursing home · Teaneck, NJ
- Oakland Rehabilitation and Healthcare CenterNursing home · Oakland, NJ
Industry payments (Open Payments)
- 2025$103.53 · 6 payments from 4 companies
- 2024$82.36 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $58.18 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $16.28 | 1 |
| Insmed, Inc. | $15.52 | 1 |
| Lundbeck LLC | $13.55 | 1 |
What the 2025 payments were for
- Food and Beverage$103.53 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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