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Anesthesiology

Edward G. O'Connor Jr., MD

Works at hospitals in Annapolis, MD · Baltimore, MD · Maryland

Summary

Dr. Edward G. O'Connor Jr., MD is an anesthesiologist at 2001 Medical Pkwy, Annapolis, MD 21401. Phone: (443) 481-1000. Accepts Medicare assignment. In 2024, Edward G. O'Connor Jr. had 237 Original Medicare patients and 269 services. NPI 1659804532. 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 Edward G. O'Connor Jr., 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 Edward G. O'Connor Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Edward G. O'Connor Jr. 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 Edward G. O'Connor Jr. see?
In 2024, CMS data shows 237 Original Medicare patients and 269 services for Edward G. O'Connor Jr.. This counts Original Medicare only and measures volume, not quality.
What is Edward G. O'Connor Jr.'s NPI number?
1659804532. 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 Edward G. O'Connor Jr., 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 patients237
Services billed to Medicare269
Different services or procedures62
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Insertion of artery tube for blood sampling or infusion through skin (36620)26 services
  2. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)24 services
  3. Anesthesia for other procedure on large blood vessel of neck (00350)15 services
  4. Anesthesia for procedure to assess heart electrical activity (00537)13 services
  5. Anesthesia for other procedure on upper abdomen (00790)12 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%
  • Arthritis58%
  • Diabetes41%
  • Ischemic heart disease39%
  • Chronic kidney disease37%

Hospitals where Edward G. O'Connor Jr. works

Medicare's Facility Affiliation Data lists Edward G. O'Connor Jr. 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 Edward G. O'Connor Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Edward G. O'Connor Jr. as a member of these groups (CMS data updated October 2, 2026).

  • Anesthesia Company LLC378 clinicians in the group
  • St Agnes Healthcare Inc260 clinicians in the group
  • Tidewater Anesthesia Associates, PA32 clinicians in the group

Specialties

Find other Anesthesiology doctors in Maryland →

Other anesthesiologists in Annapolis

Clinicians with the same Medicare primary specialty in Annapolis, MD — not a recommendation.

All anesthesiologists in Annapolis →

Other clinicians in Anesthesia Company LLC

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

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1659804532
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