Toan Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Toan Nguyen, 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.

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 cholesterol67%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)63%
• High blood pressure57%
• Arthritis40%

Hospitals where Toan Nguyen works

Medicare's Facility Affiliation Data lists Toan Nguyen 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.

• Good Samaritan Hospital of SuffernSuffern, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330158
• Westchester Medical CenterValhalla, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330234

Practice locations

Addresses where Toan Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 Woods RdValhalla, NY 10595
• 19 Bradhurst AveHawthorne, NY 10532
• 257 Lafayette Ave, Suite 200Suffern, NY 10901 (914) 449‑3218
• 95 Grasslands RdValhalla, NY 10595 (914) 493‑6940

Group practices

Medicare enrollment lists Toan Nguyen as a member of this group (CMS data updated October 2, 2026).

• Westchester Medical Center Advanced Physician Services PC897 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in New York →

Other general surgeons in Valhalla

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

• Rachelle J. Lodescar, MD
• Kartik Prabhakaran, MD
• Gabriel Froula, DO
• Aaron J. Zuckerman, MD
• Stuart M. Greenstein, MD
• Bardiya Zangbar Sabegh, MD
• Jordan M. Kirsch, DO
• Matthew E. Bronstein, MD

All general surgeons in Valhalla →

Other clinicians in Westchester Medical Center Advanced Physician Services PC

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

• Colette Wolff, AU
• Andrea M. Porrovecchio, MD
• Ronald Cho, MD
• Marshall G. Gelbman, MD
• Rachelle J. Lodescar, MD
• Richard Gil, MD

Clinician information

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