Quick answers
- Which hospitals does Mary L. Mayer work at?
- Medicare's official clinician data lists Mary L. Mayer at 5 hospitals: Columbus Regional Hospital, Community Hospital East, Community Hospital South, Inc., Franciscan Health Indianapolis and Franciscan Health Mooresville. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary L. Mayer see patients?
- Medicare's clinician data lists 2 practice locations, including Indianapolis, IN. Call before your visit to confirm the address.
- What is Mary L. Mayer's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Hematology.
- Does Mary L. Mayer accept Medicare assignment?
- Yes. Medicare's clinician data says Mary L. Mayer 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 Mary L. Mayer?
- (317) 621-4300, as listed in official Medicare / NPI Registry data.
- What is Mary L. Mayer's NPI number?
- 1770588808. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary L. Mayer works
Medicare's Facility Affiliation Data lists Mary L. Mayer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Columbus Regional HospitalColumbus, IN · Acute Care Hospital · CCN 150112
- Community Hospital EastIndianapolis, IN · Acute Care Hospital · CCN 150074
- Community Hospital South, Inc.Indianapolis, IN · Acute Care Hospital · CCN 150128
- Franciscan Health IndianapolisIndianapolis, IN · Acute Care Hospital · CCN 150162
- Franciscan Health MooresvilleMooresville, IN · Acute Care Hospital · CCN 150057
Practice locations
Addresses where Mary L. Mayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 7229 Clearvista Dr, Symptom Management GroupIndianapolis, IN 46256 (317) 621‑4300
- 8075 N Shadeland AveIndianapolis, IN 46250 (317) 621‑8000
Group practices
Medicare enrollment lists Mary L. Mayer as a member of these groups (CMS data updated 2026-10-02).
- Community Physicians of Indiana Inc1,565 clinicians in the group
- Community Physician Network Specialty Care LLC267 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematologyalso
Other oncologists in Indianapolis
Clinicians with the same Medicare primary specialty in Indianapolis, IN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770588808 |
| 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