Robert G. Collum, MD
NPI 1912941899ActiveIndividual· Internal Medicine· Denville, NJ
Internal Medicine (MD) in Denville, New Jersey, trained at Columbia University College of Physicians and Surgeons (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $694,384 for 7,435 claims, against $242,572 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 17 companies reporting payments in 2025, $808.86 in all, mostly food and beverage.
Overview
| NPI | 1912941899 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Dec 10, 2021 |
| Certified by provider | Dec 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA06600200 | 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 | 641 |
|---|---|
| Services billed | 5,592 across 68 procedure codes |
| Paid by Medicare | $242,572 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,435 · 18,188 30-day fills |
|---|---|
| Patients | 753 |
| Total drug cost | $694,384 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Consensus Medical Group LLCBridgewater, NJ · 137 clinicians
- Provider Partners Care Management LPSterling, VA · 30 clinicians
Hospital affiliations
- Hackensack University Medical CenterHackensack, NJ
- Morristown Medical CenterMorristown, NJ
- Saint Clare's Hospital/ Denville CampusDenville, NJ
Other facilities
- Atlantic Visiting NurseHome health agency · Morristown, NJ
- Visiting Nurse Assoc of Northern New Jersey, IncHome health agency · Morristown, NJ
- Atlantic Visiting NurseHospice · Morristown, NJ
- Kessler Rehab CenterInpatient rehabilitation facility · West Orange, NJ
- Oaks at Denville, theNursing home · Denville, NJ
Industry payments (Open Payments)
- 2025$808.86 · 46 payments from 17 companies
- 2024$709.41 · 52 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $127.90 | 7 |
| Novo Nordisk Inc | $105.57 | 6 |
| Abbvie Inc. | $103.08 | 6 |
| Pfizer Inc. | $65.92 | 4 |
| Astrazeneca Pharmaceuticals LP | $61.53 | 4 |
What the 2025 payments were for
- Food and Beverage$808.86 · 46 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Denville · All internal medicine physicians in New Jersey