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Diagnostic Radiology

Marcia Walker, MD

Works at hospitals in Stanford, CA · Pleasanton, CA · California

Summary

Marcia Walker, MD (Diagnostic Radiology) is listed by Medicare at 2 hospitals in Stanford, CA and Pleasanton, CA. NPI 1487815502. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Marcia Walker, 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

Diagnostic RadiologyPrimary specialty
YesAccepts Medicare assignment
23Years since medical school (graduated 2003)
FemaleGender (as listed)
Stanford Health CareGroup practice (+3 more)

Quick answers

Which hospitals does Marcia Walker work at?
Medicare's official clinician data lists Marcia Walker at 2 hospitals: Stanford Health Care and Stanford Health Care Tri-Valley. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Marcia Walker see patients?
Medicare's clinician data lists 3 practice locations, including North Miami, FL, Stanford, CA and Metairie, LA. Call before your visit to confirm the address.
What is Marcia Walker's specialty?
Medicare lists Diagnostic Radiology as the primary specialty.
Does Marcia Walker accept Medicare assignment?
Yes. Medicare's clinician data says Marcia Walker 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 Marcia Walker?
(786) 392-7653, as listed in official Medicare / NPI Registry data.
What is Marcia Walker's NPI number?
1487815502. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Marcia Walker works

Medicare's Facility Affiliation Data lists Marcia Walker at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Marcia Walker is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Marcia Walker as a member of these groups (CMS data updated 2026-10-02).

  • Stanford Health Care3,122 clinicians in the group
  • University of Miami2,377 clinicians in the group
  • Simonmed Imaging Florida LLC317 clinicians in the group
  • Health Diagnostics of California a Professional Corporation183 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Florida →

Other radiologists in North Miami

Clinicians with the same Medicare primary specialty in North Miami, FL — not a recommendation.

All radiologists in North Miami →

Clinician information

CredentialMD
Graduation year2003
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1487815502
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians