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

General Surgery

Margaret S. Flood, MD

Works at hospitals in Jacksonville, FL · Florida

Summary

Dr. Margaret S. Flood, MD is a general surgeon at 487 20th St, Atlantic Beach, FL 32233. Phone: (904) 878-7922. Accepts Medicare assignment. In 2024, Margaret S. Flood had 652 Original Medicare patients and 4,015 services. NPI 1467740928. 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 Margaret S. Flood, 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 Margaret S. Flood accept Medicare assignment?
Yes. Medicare's clinician data says Margaret S. Flood 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 Margaret S. Flood see?
In 2024, CMS data shows 652 Original Medicare patients and 4,015 services for Margaret S. Flood. This counts Original Medicare only and measures volume, not quality.
What is Margaret S. Flood's NPI number?
1467740928. 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 Margaret S. Flood, 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 patients652
Services billed to Medicare4,015
Different services or procedures24
Participating Medicare providerYes
Average age of these patients80

Most frequent services

  1. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)1,530 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)781 services
  3. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)307 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)280 services
  5. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)224 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%
  • Arthritis72%
  • Ischemic heart disease62%
  • Depression61%
  • Chronic kidney disease60%

Hospitals where Margaret S. Flood works

Medicare's Facility Affiliation Data lists Margaret S. Flood 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 Margaret S. Flood is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Margaret S. Flood as a member of this group (CMS data updated October 2, 2026).

  • Margaret E Seymour MD PA2 clinicians in the group

Specialties

Find other General Surgery doctors in Florida →

Other general surgeons in Florida

Clinicians with the same Medicare primary specialty in Florida — not a recommendation.

All general surgeons in Florida →

Other clinicians in Margaret E Seymour MD PA

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

Clinician information

CredentialMD
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1467740928
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