Herman Hasselkus, M.D.
NPI 1053481382ActiveIndividual· Internal Medicine, Geriatric Medicine· Aurora, CO
Internal Medicine, Geriatric Medicine (M.D.) with Mauricio Waintrub, M.D., P.C, practicing in Aurora, Colorado. Their prescriptions cost Medicare Part D more than their services did: $2,388,920 for 10,653 claims, against $238,557 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 22 companies reporting payments in 2025, $3,882 in all, mostly food and beverage. Lists The Medical Center of Aurora & South Hospital as a hospital affiliation.
Overview
| NPI | 1053481382 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 8, 2006 |
| Last updated in NPPES | Jul 20, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | 49496 | CO |
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 (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 176 |
|---|---|
| Services billed | 5,749 across 73 procedure codes |
| Paid by Medicare | $238,557 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,653 · 25,317 30-day fills |
|---|---|
| Patients | 581 |
| Total drug cost | $2,388,920 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mauricio Waintrub, M.D., P.CAurora, CO · 26 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$3,882 · 134 payments from 22 companies
- 2024$3,922 · 129 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $1,158 | 37 |
| Abbvie Inc. | $600.51 | 20 |
| Amgen Inc. | $486.23 | 26 |
| Novo Nordisk Inc | $381.76 | 11 |
| Madrigal Pharmaceuticals | $255.14 | 6 |
What the 2025 payments were for
- Food and Beverage$3,882 · 134 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 52 geriatricians in Aurora · All geriatricians in Colorado