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

Internal Medicine

Vasanthi Narayan, MD

Sees patients in Anaheim, CA · Irvine, CA · California

Summary

Vasanthi Narayan, MD (Internal Medicine) is enrolled with Medicare at 2 practice locations in Anaheim, CA and Irvine, CA. NPI 1598939589. 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 Vasanthi Narayan, 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
24Years since medical school (graduated 2002)
Yale University School Of MedicineMedical school
MaleGender (as listed)
Southern California Permanente Medical GroupGroup practice

Quick answers

Where does Vasanthi Narayan see patients?
Medicare's clinician data lists 2 practice locations, including Anaheim, CA and Irvine, CA. Call before your visit to confirm the address.
What is Vasanthi Narayan's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Endocrinology.
Does Vasanthi Narayan accept Medicare assignment?
Yes. Medicare's clinician data says Vasanthi Narayan 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 Vasanthi Narayan?
(714) 279-6088, as listed in official Medicare / NPI Registry data.
What is Vasanthi Narayan's NPI number?
1598939589. 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 Vasanthi Narayan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Vasanthi Narayan 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 Anaheim

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

All internal medicine doctors in Anaheim →

Clinician information

CredentialMD
Medical schoolYale University School Of Medicine
Graduation year2002
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598939589
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