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Emergency Medicine

Patricia T. Phan, MD

Works at hospitals in Roslyn, NY · New York

Summary

Dr. Patricia T. Phan, MD is an emergency medicine doctor at 100 Port Washington Blvd, Roslyn, NY 11576. Phone: (631) 669-2255. Accepts Medicare assignment. In 2024, Patricia T. Phan had 1,263 Original Medicare patients and 1,357 services. NPI 1598787509. 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: 100 Port Washington Blvd, Roslyn, NY 11576 · Directions
  • Phone: (631) 669‑2255
  • Medicare: Accepts Medicare assignment
  • Hospital: St Francis Hospital - The Heart Center
  • Group practice: St Francis Hospital
  • Medical school: Howard University College Of Medicine · graduated 1996 (30 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Patricia T. Phan, 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 Patricia T. Phan accept Medicare assignment?
Yes. Medicare's clinician data says Patricia T. Phan 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 Patricia T. Phan see?
In 2024, CMS data shows 1,263 Original Medicare patients and 1,357 services for Patricia T. Phan. This counts Original Medicare only and measures volume, not quality.
What is Patricia T. Phan's NPI number?
1598787509. 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 Patricia T. Phan, 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 patients1,263
Services billed to Medicare1,357
Different services or procedures27
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)846 services
  2. Critical care, first 30-74 minutes (99291)199 services
  3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)109 services
  4. Emergency department visit with moderate level of medical decision making (99284)76 services
  5. Hospital discharge day management, 30 minutes or less (99238)42 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%
  • Ischemic heart disease70%
  • Arthritis66%
  • Diabetes47%
  • Atrial fibrillation46%

Hospitals where Patricia T. Phan works

Medicare's Facility Affiliation Data lists Patricia T. Phan 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 Patricia T. Phan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Patricia T. Phan as a member of this group (CMS data updated October 2, 2026).

  • St Francis Hospital99 clinicians in the group

Specialties

Find other Emergency Medicine doctors in New York →

Other emergency medicine doctors in Roslyn

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

All emergency medicine doctors in Roslyn →

Other clinicians in St Francis Hospital

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

Clinician information

CredentialMD
Medical schoolHoward University College Of Medicine
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598787509
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