Quick answers
- Which hospitals does Herman Hasselkus work at?
- Medicare's official clinician data lists Herman Hasselkus at 1 hospital: The Medical Center of Aurora & South Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Herman Hasselkus see patients?
- Medicare's clinician data lists 1 practice location in Aurora, CO. Call before your visit to confirm the address.
- What is Herman Hasselkus's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Herman Hasselkus accept Medicare assignment?
- Yes. Medicare's clinician data says Herman Hasselkus accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Herman Hasselkus offer telehealth?
- Medicare's clinician data says Herman Hasselkus offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Herman Hasselkus?
- (303) 337-5575, as listed in official Medicare / NPI Registry data.
- What is Herman Hasselkus's NPI number?
- 1053481382. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Herman Hasselkus works
Medicare's Facility Affiliation Data lists Herman Hasselkus at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- The Medical Center of Aurora & South HospitalAurora, CO · Acute Care Hospital · CCN 060100
Practice locations
Addresses where Herman Hasselkus is enrolled with Medicare (CMS data updated 2026-10-02).
- 1360 S Potomac StAurora, CO 80012 (303) 337‑5575
Group practices
Medicare enrollment lists Herman Hasselkus as a member of this group (CMS data updated 2026-10-02).
- Mauricio Waintrub, M.D., P.C26 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Aurora
Clinicians with the same Medicare primary specialty in Aurora, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053481382 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians