Quick answers
- Which hospitals does Brett E. Lewis work at?
- Medicare's official clinician data lists Brett E. Lewis at 3 hospitals: Hackensack Meridian Mountainside Medical, Hackensack University Medical Center and UPMC Williamsport. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brett E. Lewis see patients?
- Medicare's clinician data lists 5 practice locations, including Montclair, NJ, Hackensack, NJ and Willingboro, NJ. Call before your visit to confirm the address.
- What is Brett E. Lewis's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Brett E. Lewis accept Medicare assignment?
- Yes. Medicare's clinician data says Brett E. Lewis 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 Brett E. Lewis offer telehealth?
- Medicare's clinician data says Brett E. Lewis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Brett E. Lewis?
- (609) 835-2900, as listed in official Medicare / NPI Registry data.
- What is Brett E. Lewis's NPI number?
- 1306010806. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brett E. Lewis works
Medicare's Facility Affiliation Data lists Brett E. Lewis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hackensack Meridian Mountainside MedicalMontclair, NJ · Acute Care Hospital · CCN 310054
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · CCN 310001
- UPMC WilliamsportWilliamsport, PA · Acute Care Hospital · CCN 390045
Practice locations
Addresses where Brett E. Lewis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Bay AveMontclair, NJ 07042 (609) 835‑2900
- 1 Bay Ave, Suite 2Montclair, NJ 07042 (609) 835‑2900
- 155 State StHackensack, NJ 07601 (844) 346‑7222
- 218 A Sunset RdWillingboro, NJ 08046 (609) 835‑2900
- 30 Prospect AveHackensack, NJ 07601 (844) 346‑7222
Group practices
Medicare enrollment lists Brett E. Lewis as a member of this group (CMS data updated 2026-10-02).
- Regional Cancer Care Associates LLC151 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Montclair
Clinicians with the same Medicare primary specialty in Montclair, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1306010806 |
| 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