David M. Slack, MD
NPI 1205895554ActiveIndividual· Internal Medicine· Easthampton, MA
Internal Medicine (MD) in Easthampton, Massachusetts, trained at New York Medical College (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $470,798 for 5,199 claims, against $161,888 paid for services in 2024.
Overview
| NPI | 1205895554 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 23, 2006 |
| Last updated in NPPES | Jun 17, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 72497 | MA |
| Pediatrics | 208000000X | 72497 | MA |
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 (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 695 |
|---|---|
| Services billed | 6,339 across 156 procedure codes |
| Paid by Medicare | $161,888 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,199 · 11,359 30-day fills |
|---|---|
| Patients | 422 |
| Total drug cost | $470,798 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Medical group
- Valley Medical Group PCEasthampton, MA · 108 clinicians
Hospital affiliations
- Baystate Medical CenterSpringfield, MA
- Cooley Dickinson Hospital Inc,theNorthampton, MA
Other facilities
- CaretendersHome health agency · Holyoke, MA
- Vna & Hospice of Cooley DickinsonHome health agency · Northampton, MA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Easthampton
- 1174786321
- 1043590417
- 1417933151
- 1508894676
- 1043292089