Quick answers
- Does Erwin C. Santiago Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Erwin C. Santiago Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Erwin C. Santiago Jr.'s NPI number?
- 1336078435. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Erwin C. Santiago Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 Sunset Ridge RdNorthbrook, IL 60062 (224) 534‑6640
- 751 E Terra Cotta AveCrystal Lake, IL 60014 (815) 444‑6600
Group practices
Medicare enrollment lists Erwin C. Santiago Jr. as a member of this group (CMS data updated October 2, 2026).
- Hansa Medical Groupe PLLC41 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Northbrook
Clinicians with the same Medicare primary specialty in Northbrook, IL — not a recommendation.
Other clinicians in Hansa Medical Groupe PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2026 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336078435 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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