Zainab Ibrahim, MD

Medicare activity in 2024

Official CMS public-use data for Zainab Ibrahim, 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 low level od decision making, if using time, 20 minutes or more (99213)50 services
2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)23 services
3. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)21 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%
• Arthritis71%
• Osteoporosis62%
• Anxiety60%
• Depression51%

Hospitals where Zainab Ibrahim works

Medicare's Facility Affiliation Data lists Zainab Ibrahim 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
• Newton-Wellesley HospitalNewton, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220101

Practice locations

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

• 55 Fruit StBoston, MA 02114 (617) 724‑0287

Group practices

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

• Massachusetts General Physicians Organization Inc3,558 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Massachusetts →

Other orthopedic surgeons in Boston

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

• Benton E. Heyworth, MD
• Hiba Anis, MD
• Yi Meng Yen, MD
• Christopher Chiodo, MD
• Mattie E. Raiford, MD
• Daniel Guss
• Simon Gortz, MD
• James Robinson, MD

All orthopedic surgeons in Boston →

Other clinicians in Massachusetts General Physicians Organization Inc

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

• Mark W. Albers, MD
• Rachel R. Steere, DO
• Darren C. Rosenberg, MD
• Rajiv Gupta, MD
• Jeffrey X. Wang, MD
• Robert P. Friday, 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