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Emergency Medicine

Mary A. Newell, DO

Works at hospitals in Bronx, NY · Sleepy Hollow, NY · New York

Summary

Dr. Mary A. Newell, DO is an emergency medicine doctor at 300 Community Dr, Manhasset, NY 11030. Phone: (516) 562-2229. May accept Medicare assignment. In 2024, Mary A. Newell had 166 Original Medicare patients and 247 services. NPI 1174882757. 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: 300 Community Dr, Manhasset, NY 11030 · Directions (6 more locations)
  • Phone: (516) 562‑2229
  • Medicare: May accept Medicare assignment
  • Hospitals: Montefiore Medical Center, Phelps Hospital
  • Group practice: North Shore-Lij Medical PC (+1 more)
  • Medical school: New York College Of Osteo Medicine Of New York Institute Of Technology · graduated 2009 (17 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mary A. Newell, 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 Mary A. Newell accept Medicare assignment?
Medicare's clinician data says Mary A. Newell may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Mary A. Newell see?
In 2024, CMS data shows 166 Original Medicare patients and 247 services for Mary A. Newell. This counts Original Medicare only and measures volume, not quality.
What is Mary A. Newell's NPI number?
1174882757. 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 Mary A. Newell, 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 patients166
Services billed to Medicare247
Different services or procedures11
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)85 services
  2. Emergency department visit with high level of medical decision making (99285)85 services
  3. Emergency department visit with moderate level of medical decision making (99284)52 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%
  • Diabetes75%
  • Arthritis55%
  • Ischemic heart disease49%
  • Chronic kidney disease49%

Hospitals where Mary A. Newell works

Medicare's Facility Affiliation Data lists Mary A. Newell 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.

  • Montefiore Medical CenterBronx, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330059
  • Phelps HospitalSleepy Hollow, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330261

Practice locations

Addresses where Mary A. Newell is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Mary A. Newell as a member of these groups (CMS data updated October 2, 2026).

  • North Shore-Lij Medical PC6,440 clinicians in the group
  • Montefiore Medical Center2,820 clinicians in the group

Specialties

Find other Emergency Medicine doctors in New York →

Other emergency medicine doctors in Manhasset

Clinicians with the same Medicare primary specialty in Manhasset, NY — not a recommendation.

All emergency medicine doctors in Manhasset →

Other clinicians in North Shore-Lij Medical PC

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

Clinician information

CredentialDO
Medical schoolNew York College Of Osteo Medicine Of New York Institute Of Technology
Graduation year2009 (17 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1174882757
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