Quick answers
- Which hospitals does Mara L. Geiger work at?
- Medicare's official clinician data lists Mara L. Geiger at 3 hospitals: Beaumont Hospital - Grosse Pointe, Beaumont Hospital Royal Oak and Beaumont Hospital, Troy. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mara L. Geiger see patients?
- Medicare's clinician data lists 1 practice location in Troy, MI. Call before your visit to confirm the address.
- What is Mara L. Geiger's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mara L. Geiger accept Medicare assignment?
- Yes. Medicare's clinician data says Mara L. Geiger 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.
- Does Mara L. Geiger offer telehealth?
- Medicare's clinician data says Mara L. Geiger offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Mara L. Geiger's NPI number?
- 1003806241. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mara L. Geiger works
Medicare's Facility Affiliation Data lists Mara L. Geiger at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI · Acute Care Hospital · CCN 230089
- Beaumont Hospital Royal OakRoyal Oak, MI · Acute Care Hospital · CCN 230130
- Beaumont Hospital, TroyTroy, MI · Acute Care Hospital · CCN 230269
Practice locations
Addresses where Mara L. Geiger is enrolled with Medicare (CMS data updated 2026-10-02).
- 4600 Investment Dr, Suite 300Troy, MI 48098
Group practices
Medicare enrollment lists Mara L. Geiger as a member of this group (CMS data updated 2026-10-02).
- Arcturus Healthcare PLC63 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Troy
Clinicians with the same Medicare primary specialty in Troy, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1003806241 |
| 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