Quick answers
- Which hospitals does Alexander B. Niculescu work at?
- Medicare's official clinician data lists Alexander B. Niculescu at 4 hospitals: Cedars-Sinai Medical Center, Northridge Hospital Medical Center, Providence Cedars Sinai Tarzana Medical Center and Saint John's Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexander B. Niculescu see patients?
- Medicare's clinician data lists 4 practice locations, including Los Angeles, CA, Tarzana, CA and Santa Monica, CA. Call before your visit to confirm the address.
- What is Alexander B. Niculescu's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Family Practice, Hospice/Palliative Care and Hospitalist.
- Does Alexander B. Niculescu accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander B. Niculescu 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 Alexander B. Niculescu offer telehealth?
- Medicare's clinician data says Alexander B. Niculescu offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Alexander B. Niculescu?
- (310) 230-5984, as listed in official Medicare / NPI Registry data.
- What is Alexander B. Niculescu's NPI number?
- 1164059135. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexander B. Niculescu works
Medicare's Facility Affiliation Data lists Alexander B. Niculescu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050625
- Northridge Hospital Medical CenterNorthridge, CA · Acute Care Hospital · CCN 050116
- Providence Cedars Sinai Tarzana Medical CenterTarzana, CA · Acute Care Hospital · CCN 050761
- Saint John's Health CenterSanta Monica, CA · Acute Care Hospital · CCN 050290
Practice locations
Addresses where Alexander B. Niculescu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1070 S Holt Ave, Apt 405Los Angeles, CA 90035 (310) 230‑5984
- 18321 Clark StTarzana, CA 91356 (818) 881‑0800
- 2021 Santa Monica Blvd, Suite 245eSanta Monica, CA 90404 (310) 829‑4403
- 4867 W Sunset BlvdLos Angeles, CA 90027 (323) 783‑4011
Group practices
Medicare enrollment lists Alexander B. Niculescu as a member of these groups (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
- Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
- Providence Saint Johns Medical Foundation281 clinicians in the group
- Happy Vitals PC9 clinicians in the group
Specialties
- Internal Medicineprimary
- Family Practicealso
- Hospice/Palliative Carealso
- Hospitalistalso
Other internal medicine doctors in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1164059135 |
| 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