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Internal Medicine

Melissa Nasiruddin, DO

Sees patients in San Mateo, CA · California

Summary

Melissa Nasiruddin, DO (Internal Medicine) is enrolled with Medicare at 1 practice location in San Mateo, CA. NPI 1619469392. 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 Melissa Nasiruddin, 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
8Years since medical school (graduated 2018)
Arizona College Of Osteopathic Medicine Mid Western UniversityMedical school
FemaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does Melissa Nasiruddin see patients?
Medicare's clinician data lists 1 practice location in San Mateo, CA. Call before your visit to confirm the address.
What is Melissa Nasiruddin's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Melissa Nasiruddin accept Medicare assignment?
Yes. Medicare's clinician data says Melissa Nasiruddin 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 Melissa Nasiruddin?
(650) 358-7000, as listed in official Medicare / NPI Registry data.
What is Melissa Nasiruddin's NPI number?
1619469392. 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 Melissa Nasiruddin is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Melissa Nasiruddin as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Mateo

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

All internal medicine doctors in San Mateo →

Clinician information

CredentialDO
Medical schoolArizona College Of Osteopathic Medicine Mid Western University
Graduation year2018
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1619469392
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