Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Ritu J. Viswanath, MD

Sees patients in Los Angeles, CA · California

Summary

Ritu J. Viswanath, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in Los Angeles, CA. NPI 1497029078. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Ritu J. Viswanath, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
16Years since medical school (graduated 2010)
FemaleGender (as listed)
Southern California Permanente Medical GroupGroup practice

Quick answers

Where does Ritu J. Viswanath see patients?
Medicare's clinician data lists 1 practice location in Los Angeles, CA. Call before your visit to confirm the address.
What is Ritu J. Viswanath's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Ritu J. Viswanath accept Medicare assignment?
Yes. Medicare's clinician data says Ritu J. Viswanath 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 Ritu J. Viswanath?
(800) 954-8000, as listed in official Medicare / NPI Registry data.
What is Ritu J. Viswanath's NPI number?
1497029078. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Ritu J. Viswanath is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Ritu J. Viswanath as a member of this group (CMS data updated 2026-10-02).

  • Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Los Angeles

Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.

All internal medicine doctors in Los Angeles →

Clinician information

CredentialMD
Graduation year2010
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1497029078
CorrectionsReport 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

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians