Quick answers
- Where does Tammy Chavarria see patients?
- Medicare's clinician data lists 2 practice locations, including Oakbrook Terrace, IL and Lake Forest, IL. Call before your visit to confirm the address.
- What is Tammy Chavarria's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Tammy Chavarria accept Medicare assignment?
- Yes. Medicare's clinician data says Tammy Chavarria 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.
- What is the phone number for Tammy Chavarria?
- (630) 545-3766, as listed in official Medicare / NPI Registry data.
- What is Tammy Chavarria's NPI number?
- 1043677529. 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 Tammy Chavarria is enrolled with Medicare (CMS data updated 2026-10-02).
- 2 Transam Plaza Dr, Suite 400Oakbrook Terrace, IL 60181 (630) 545‑3766
- 660 N Westmoreland Rd, 302 Lake Forest ObgynLake Forest, IL 60045 (312) 926‑6146
Group practices
Medicare enrollment lists Tammy Chavarria as a member of this group (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Oakbrook Terrace
Clinicians with the same Medicare primary specialty in Oakbrook Terrace, IL — not a recommendation.
Clinician information
| Graduation year | 2000 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043677529 |
| 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 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