Quick answers
- Which hospitals does Nathan Wallenfang work at?
- Medicare's official clinician data lists Nathan Wallenfang at 1 hospital: Aurora Medical Center Bay Area. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathan Wallenfang see patients?
- Medicare's clinician data lists 6 practice locations, including Chicago, IL, Downers Grove, IL and Buffalo Grove, IL. Call before your visit to confirm the address.
- What is Nathan Wallenfang's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Nathan Wallenfang accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan Wallenfang 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 Nathan Wallenfang offer telehealth?
- Medicare's clinician data says Nathan Wallenfang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Nathan Wallenfang?
- (630) 368-1771, as listed in official Medicare / NPI Registry data.
- What is Nathan Wallenfang's NPI number?
- 1386090512. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathan Wallenfang works
Medicare's Facility Affiliation Data lists Nathan Wallenfang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora Medical Center Bay AreaMarinette, WI · Acute Care Hospital · CCN 520113
Practice locations
Addresses where Nathan Wallenfang is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1435 W Webster AveChicago, IL 60614 (630) 368‑1771
- 1441 Branding AveDowners Grove, IL 60515 (630) 829‑1084
- 214 McHenry RdBuffalo Grove, IL 60089 (847) 459‑1160
- 4025 N Western AveChicago, IL 60618 (773) 275‑7700
- 4025 N Western Ave, Bldg EChicago, IL 60618 (773) 296‑3300
Group practices
Medicare enrollment lists Nathan Wallenfang as a member of these groups (CMS data updated 2026-10-02).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- Advocate Health and Hospitals Corporation3,118 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386090512 |
| 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