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

Internal Medicine

Marie A. Russell, MD

Sees patients in San Marcos, CA · Ramona, CA · Oceanside, CA · California

Summary

Dr. Marie A. Russell, MD is an internal medicine doctor at 150 Valpreda Rd, San Marcos, CA 92069. Phone: (619) 736-6700. Accepts Medicare assignment. NPI 1609947449. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 150 Valpreda Rd, San Marcos, CA 92069 · Directions (5 more locations)
  • Phone: (619) 736‑6700
  • Medicare: Accepts Medicare assignment
  • Group practice: North County Health Project Inc
  • Medical school: Uniformed Services Uhs Fe Hebert School Of Med · graduated 1998 (28 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Marie A. Russell, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Marie A. Russell accept Medicare assignment?
Yes. Medicare's clinician data says Marie A. Russell accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Marie A. Russell's NPI number?
1609947449. 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 Marie A. Russell is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Marie A. Russell as a member of this group (CMS data updated October 2, 2026).

  • North County Health Project Inc64 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Marcos

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

All internal medicine doctors in San Marcos →

Other clinicians in North County Health Project Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniformed Services Uhs Fe Hebert School Of Med
Graduation year1998 (28 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609947449
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 October 2, 2026, retrieved October 29, 2026
  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