Quick answers
- Which hospitals does Nathan A. Grimaldi work at?
- Medicare's official clinician data lists Nathan A. Grimaldi at 1 hospital: Mercy Hospital Pittsburg, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathan A. Grimaldi see patients?
- Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
- What is Nathan A. Grimaldi's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty, and also Emergency Medicine.
- Does Nathan A. Grimaldi accept Medicare assignment?
- Medicare's clinician data says Nathan A. Grimaldi may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Nathan A. Grimaldi's NPI number?
- 1114676905. 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 A. Grimaldi works
Medicare's Facility Affiliation Data lists Nathan A. Grimaldi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital Pittsburg, IncPittsburg, KS · Acute Care Hospital · CCN 170006
Practice locations
Addresses where Nathan A. Grimaldi is enrolled with Medicare (CMS data updated 2026-10-02).
- PO BoxChicago, IL 60677
Specialties
- Orthopedic Surgeryprimary
- Emergency Medicinealso
Other orthopedic surgeons in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1114676905 |
| 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