Nicholas M. Grumbach, M.D.
NPI 1932105780ActiveIndividual· Internal Medicine· Warwick, RI
Internal Medicine (M.D.) in Warwick, Rhode Island, trained at Icahn School of Medicine at Mount Sinai (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $44,254 for 341 claims, against $1,103 paid for services in 2024.
Overview
| NPI | 1932105780 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2005 |
| Last updated in NPPES | Sep 30, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD10410 | RI |
| Pediatrics | 208000000X | MD10410 | RI |
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 - Pediatric Medicine (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 18 across 4 procedure codes |
| Paid by Medicare | $1,103 |
Part D prescriptions in 2024
| Prescriptions (claims) | 341 · 460 30-day fills |
|---|---|
| Patients | 53 |
| Total drug cost | $44,254 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Pediatric Medicine |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Rhode Island HospitalProvidence, RI · 437 clinicians
Hospital affiliation
- Rhode Island HospitalProvidence, RI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 138 internal medicine physicians in Warwick · All internal medicine physicians in Rhode Island