Quick answers
- Which hospitals does Leena Mammen work at?
- Medicare's official clinician data lists Leena Mammen at 5 hospitals: Bronson Battle Creek Hospital, Bronson Methodist Hospital, McLaren Greater Lansing, MyMichigan Medical Center Midland and Spectrum Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Leena Mammen see patients?
- Medicare's clinician data lists 6 practice locations, including Grand Rapids, MI, Vail, AZ and Lansing, MI. Call before your visit to confirm the address.
- What is Leena Mammen's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Leena Mammen accept Medicare assignment?
- Yes. Medicare's clinician data says Leena Mammen 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 Leena Mammen?
- (616) 363-7272, as listed in official Medicare / NPI Registry data.
- What is Leena Mammen's NPI number?
- 1275568826. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leena Mammen works
Medicare's Facility Affiliation Data lists Leena Mammen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bronson Battle Creek HospitalBattle Creek, MI · Acute Care Hospital · CCN 230075
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospital · CCN 230017
- McLaren Greater LansingLansing, MI · Acute Care Hospital · CCN 230167
- MyMichigan Medical Center MidlandMidland, MI · Acute Care Hospital · CCN 230222
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
Practice locations
Addresses where Leena Mammen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 100 Michigan Ave NEGrand Rapids, MI 49503 (616) 363‑7272
- 12534 E Remi DrVail, AZ 85641 (616) 363‑7272
- 2900 Collins RdLansing, MI 48910 (517) 975‑7500
- 416 Connable AvePetoskey, MI 49770 (951) 786‑0801
- 50 N Perry StPontiac, MI 48342 (248) 338‑5000
Group practices
Medicare enrollment lists Leena Mammen as a member of these groups (CMS data updated 2026-10-02).
- Rockford Health Physicians521 clinicians in the group
- McLaren Hospital Group375 clinicians in the group
- Advanced Radiology Services PC253 clinicians in the group
- Pco PC82 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275568826 |
| 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