Xiaojun X. Yan, MD

Medicare activity in 2024

Official CMS public-use data for Xiaojun X. Yan, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)1,858 services
2. Test to measure expiratory airflow and volume (94010)1,538 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,394 services
4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)181 services
5. Test to measure expiratory airflow and volume changes before and after medication administration (94060)153 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%
• Diabetes67%
• Arthritis60%
• Ischemic heart disease51%
• COPD51%

Hospitals where Xiaojun X. Yan works

Medicare's Facility Affiliation Data lists Xiaojun X. Yan 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.

• Maimonides Medical CenterBrooklyn, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330194
• Mount Sinai Beth IsraelNew York, NY · Acute Care Hospital · closed, according to its website · CCN 330169

Practice locations

Addresses where Xiaojun X. Yan is enrolled with Medicare (CMS data updated October 2, 2026).

• 2511 Ocean Ave, Suite 104Brooklyn, NY 11229 (718) 907‑0198

Specialties

• Pulmonary Diseaseprimary

Find other Pulmonary Disease doctors in New York →

Other pulmonologists in Brooklyn

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

• Erum Zahid, MD
• Sophia S. Kwon, DO
• Catherine Zaw, MD
• Kanchan Gupta, MD
• Marie J. Schmidt, MD
• Kala Sury, MD
• Chuan Jiang, MD
• Prabhakara R. Tumpati, MD

All pulmonologists in Brooklyn →

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