Quick answers
- Which hospitals does Isha Tyagi work at?
- Medicare's official clinician data lists Isha Tyagi at 3 hospitals: Memorial Medical Center, Sarah Bush Lincoln Health Center and St Johns Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Isha Tyagi see patients?
- Medicare's clinician data lists 3 practice locations, including Mattoon, IL and Springfield, IL. Call before your visit to confirm the address.
- What is Isha Tyagi's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Infectious Disease.
- Does Isha Tyagi accept Medicare assignment?
- Medicare's clinician data says Isha Tyagi may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Isha Tyagi?
- (217) 258-4020, as listed in official Medicare / NPI Registry data.
- What is Isha Tyagi's NPI number?
- 1487816161. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Isha Tyagi works
Medicare's Facility Affiliation Data lists Isha Tyagi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Medical CenterSpringfield, IL · Acute Care Hospital · CCN 140148
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospital · CCN 140189
- St Johns HospitalSpringfield, IL · Acute Care Hospital · CCN 140053
Practice locations
Addresses where Isha Tyagi is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Health Ctr Dr, Suite 401Mattoon, IL 61938 (217) 258‑4020
- 101 Professional PlzMattoon, IL 61938 (217) 238‑3730
- 800 E Carpenter StSpringfield, IL 62702
Group practices
Medicare enrollment lists Isha Tyagi as a member of these groups (CMS data updated 2026-10-02).
- Sarah Bush Lincoln Health Center419 clinicians in the group
- St Johns Hospital of the Hospital Sisters of the Third Order of St F26 clinicians in the group
Specialties
- Internal Medicineprimary
- Infectious Diseasealso
Other internal medicine doctors in Mattoon
Clinicians with the same Medicare primary specialty in Mattoon, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1487816161 |
| 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