Ramnik J. Xavier, MD

Medicare activity in 2024

Official CMS public-use data for Ramnik J. Xavier, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)26 services
2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)24 services
3. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)16 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 cholesterol74%
• Arthritis51%
• Anxiety48%
• Chronic kidney disease45%
• Ischemic heart disease41%

Hospitals where Ramnik J. Xavier works

Medicare's Facility Affiliation Data lists Ramnik J. Xavier 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.

• Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071

Practice locations

Addresses where Ramnik J. Xavier is enrolled with Medicare (CMS data updated October 2, 2026).

• 55 Fruit StBoston, MA 02114 (617) 726‑2000

Group practices

Medicare enrollment lists Ramnik J. Xavier as a member of these groups (CMS data updated October 2, 2026).

• Massachusetts General Physicians Organization Inc3,558 clinicians in the group
• The General Hospital Corporation1,267 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Massachusetts →

Other gastroenterologists in Boston

Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.

• Jeffrey A. Biller, MD
• Phillip Levine, MD
• Raaj S. Mehta, MD
• Jaspreet S. Sandhu
• Michelle J. Lai, MD
• Lilani P. Perera, MD
• Zhenghui Jiang, MD
• Trent Walradt

All gastroenterologists in Boston →

Other clinicians in Massachusetts General Physicians Organization Inc

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

• Lauren Belak, MD
• Amy L. Newhouse, MD
• David S. Binder, MD
• Donna Roy, MD
• Joseph L. Bonvie, PSY
• Shaunagh McDermott

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