Quick answers
- Which hospitals does Nisha Viswanathan work at?
- Medicare's official clinician data lists Nisha Viswanathan at 2 hospitals: Ronald Reagan UCLA Medical Center and Santa Monica - UCLA Medical Center & Orthopaedic Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nisha Viswanathan see patients?
- Medicare's clinician data lists 11 practice locations, including Los Angeles, CA, Santa Monica, CA and Encino, CA. Call before your visit to confirm the address.
- What is Nisha Viswanathan's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Nisha Viswanathan accept Medicare assignment?
- Yes. Medicare's clinician data says Nisha Viswanathan 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 Nisha Viswanathan offer telehealth?
- Medicare's clinician data says Nisha Viswanathan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Nisha Viswanathan?
- (310) 825-7922, as listed in official Medicare / NPI Registry data.
- What is Nisha Viswanathan's NPI number?
- 1578839205. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nisha Viswanathan works
Medicare's Facility Affiliation Data lists Nisha Viswanathan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050262
- Santa Monica - UCLA Medical Center & Orthopaedic HospitalSanta Monica, CA · Acute Care Hospital · CCN 050112
Practice locations
Addresses where Nisha Viswanathan is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 11; the Medicare profile lists all.
- 100 Medical PlazaLos Angeles, CA 90095
- 100 Medical Plz, Suite 310Los Angeles, CA 90095 (310) 825‑7922
- 1245 16th StSanta Monica, CA 90404
- 15503 Ventura Blvd, Suite 340Encino, CA 91436 (818) 461‑8148
- 200 Medical PlazaLos Angeles, CA 90095
Group practices
Medicare enrollment lists Nisha Viswanathan as a member of this group (CMS data updated 2026-10-02).
- The Regents of the University of California1,462 clinicians in the group
Specialties
- Internal Medicineprimary
- 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 | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1578839205 |
| 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