Matthew Mendez-Zfass, MD

Medicare activity in 2024

Official CMS public-use data for Matthew Mendez-Zfass, 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.

Most frequent services

1. Hyaluronan or derivative, synojoynt, for intra-articular injection, 1 mg (J7331)2,541 services
2. Injection, dexamethasone sodium phosphate, 1 mg (J1100)228 services
3. Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)138 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)113 services
5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)74 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 cholesterol75%
• Arthritis74%
• High blood pressure69%
• Diabetes43%
• Ischemic heart disease28%
• Osteoporosis25%

Hospitals where Matthew Mendez-Zfass works

Medicare's Facility Affiliation Data lists Matthew Mendez-Zfass 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.

• Lenox Hill HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330119
• Staten Island University HospitalStaten Island, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330160

Practice locations

Addresses where Matthew Mendez-Zfass is enrolled with Medicare (CMS data updated October 2, 2026).

• 130 E 77th St, Fl 5New York, NY 10075 (212) 434‑6800
• 159 E 74th St, Fl 2New York, NY 10021 (212) 737‑3301
• 9226 John F Kennedy Blvd, 2 Ny OrthopedicsNorth Bergen, NJ 07047 (201) 863‑3055

Group practices

Medicare enrollment lists Matthew Mendez-Zfass as a member of these groups (CMS data updated October 2, 2026).

• North Shore-Lij Medical PC6,440 clinicians in the group
• Stephen J Nicholas MD PC28 clinicians in the group

Specialties

• Sports Medicineprimary

Find other Sports Medicine doctors in New York →

Other sports medicine doctors in New York

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

• Willy Gonzalez, DO
• Michael A. Zacchilli, MD
• Leslie A. Bottrell, MD
• Chetan Gohal, MD
• Joseph Michalisin, MD
• Julia Iafrate, DO
• Irwin Abraham, MD
• Steven J. Arsht, MD

All sports medicine doctors in New York →

Other clinicians in North Shore-Lij Medical PC

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

• Cindy Kui, MD
• Julie Qiu, DO
• Jennifer Ballabon, PA
• Richard A. Cohen, PA
• Samantha Rosner, NP
• Paul C. Lee, 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