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

Emergency Medicine

Amanda M. Santa Maria, MD

Works at hospitals in Oceanside, CA · California

Summary

Dr. Amanda M. Santa Maria, MD is an emergency medicine doctor at 4002 Vista Way, Oceanside, CA 92056. Phone: (760) 724-8411. Accepts Medicare assignment. In 2024, Amanda M. Santa Maria had 303 Original Medicare patients and 462 services. NPI 1831622265. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 4002 Vista Way, Oceanside, CA 92056 · Directions
  • Phone: (760) 724‑8411
  • Medicare: Accepts Medicare assignment
  • Hospital: Tri-City Medical Center
  • Group practice: Team Physicians of Southern California Medical Group Inc
  • Medical school: graduated 2017 (9 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Amanda M. Santa Maria, 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 Amanda M. Santa Maria accept Medicare assignment?
Yes. Medicare's clinician data says Amanda M. Santa Maria 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.
How many Medicare patients does Amanda M. Santa Maria see?
In 2024, CMS data shows 303 Original Medicare patients and 462 services for Amanda M. Santa Maria. This counts Original Medicare only and measures volume, not quality.
What is Amanda M. Santa Maria's NPI number?
1831622265. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Amanda M. Santa Maria, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients303
Services billed to Medicare462
Different services or procedures22
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)179 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)129 services
  3. Critical care, first 30-74 minutes (99291)90 services
  4. Emergency department visit with moderate level of medical decision making (99284)34 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol68%
  • Arthritis47%
  • Depression41%
  • Diabetes37%
  • Anxiety36%

Hospitals where Amanda M. Santa Maria works

Medicare's Facility Affiliation Data lists Amanda M. Santa Maria at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Tri-City Medical CenterOceanside, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050128

Practice locations

Addresses where Amanda M. Santa Maria is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Amanda M. Santa Maria as a member of this group (CMS data updated October 2, 2026).

  • Team Physicians of Southern California Medical Group Inc24 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Oceanside

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

All emergency medicine doctors in Oceanside →

Other clinicians in Team Physicians of Southern California Medical Group Inc

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

Clinician information

CredentialMD
Graduation year2017 (9 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1831622265
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians