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Internal Medicine

Sidney A. Mercado, MD

Sees patients in Carson, CA · California

Summary

Sidney A. Mercado, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in Carson, CA. NPI 1518124338. 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 Sidney A. Mercado, 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
18Years since medical school (graduated 2008)
Loma Linda University School Of MedicineMedical school
MaleGender (as listed)
Healthcare Partners Affiliates Medical GroupGroup practice

Quick answers

Where does Sidney A. Mercado see patients?
Medicare's clinician data lists 1 practice location in Carson, CA. Call before your visit to confirm the address.
What is Sidney A. Mercado's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Pulmonary Disease.
Does Sidney A. Mercado accept Medicare assignment?
Yes. Medicare's clinician data says Sidney A. Mercado 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 Sidney A. Mercado?
(310) 830-9706, as listed in official Medicare / NPI Registry data.
What is Sidney A. Mercado's NPI number?
1518124338. 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 Sidney A. Mercado is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Sidney A. Mercado as a member of this group (CMS data updated 2026-10-02).

  • Healthcare Partners Affiliates Medical Group754 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Carson

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

All internal medicine doctors in Carson →

Clinician information

CredentialMD
Medical schoolLoma Linda University School Of Medicine
Graduation year2008
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1518124338
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