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

General Surgery

Maria R. Brown, MD

Works at hospitals in Chandler, AZ · Mesa, AZ · Gilbert, AZ · Arizona

Summary

Dr. Maria R. Brown, MD is a general surgeon at 1830 S Alma School Rd, Suite 108, Mesa, AZ 85210. Phone: (602) 603-2458. Accepts Medicare assignment. In 2024, Maria R. Brown had 46 Original Medicare patients and 100 services. NPI 1699113696. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Maria R. Brown, 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 Maria R. Brown accept Medicare assignment?
Yes. Medicare's clinician data says Maria R. Brown 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 Maria R. Brown see?
In 2024, CMS data shows 46 Original Medicare patients and 100 services for Maria R. Brown. This counts Original Medicare only and measures volume, not quality.
What is Maria R. Brown's NPI number?
1699113696. 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 Maria R. Brown, 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 patients46
Services billed to Medicare100
Different services or procedures23
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)13 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 cholesterol75%
  • Arthritis52%
  • Depression50%
  • Ischemic heart disease41%
  • Anxiety39%

Hospitals where Maria R. Brown works

Medicare's Facility Affiliation Data lists Maria R. Brown 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.

Practice locations

Addresses where Maria R. Brown is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other General Surgery doctors in Arizona →

Other general surgeons in Mesa

Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.

All general surgeons in Mesa →

Clinician information

CredentialMD
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1699113696
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