Quick answers
- Which hospitals does Lillian Alt work at?
- Medicare's official clinician data lists Lillian Alt at 4 hospitals: Community Medical Center, Monmouth Medical Center-Southern Campus, Robert Wood Johnson University Hospital and Robert Wood Johnson University Hospital at Hamilton. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lillian Alt see patients?
- Medicare's clinician data lists 1 practice location in Elizabeth, NJ. Call before your visit to confirm the address.
- What is Lillian Alt's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Allergy/Immunology.
- Does Lillian Alt accept Medicare assignment?
- Yes. Medicare's clinician data says Lillian Alt 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 Lillian Alt?
- (908) 994-5422, as listed in official Medicare / NPI Registry data.
- What is Lillian Alt's NPI number?
- 1619192028. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lillian Alt works
Medicare's Facility Affiliation Data lists Lillian Alt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Community Medical CenterToms River, NJ · Acute Care Hospital · CCN 310041
- Monmouth Medical Center-Southern CampusLakewood, NJ · Acute Care Hospital · CCN 310084
- Robert Wood Johnson University HospitalNew Brunswick, NJ · Acute Care Hospital · CCN 310038
- Robert Wood Johnson University Hospital at HamiltonHamilton, NJ · Acute Care Hospital · CCN 310110
Practice locations
Addresses where Lillian Alt is enrolled with Medicare (CMS data updated 2026-10-02).
- 225 Williamson StElizabeth, NJ 07202 (908) 994‑5422
Group practices
Medicare enrollment lists Lillian Alt as a member of this group (CMS data updated 2026-10-02).
- RWJBH Emergency Medicine Associates, LLC848 clinicians in the group
Specialties
- Internal Medicineprimary
- Allergy/Immunologyalso
Other internal medicine doctors in Elizabeth
Clinicians with the same Medicare primary specialty in Elizabeth, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619192028 |
| 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