Quick answers
- Does Karim Fawaz accept Medicare assignment?
- Yes. Medicare's clinician data says Karim Fawaz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Karim Fawaz see?
- In 2024, CMS data shows 48 Original Medicare patients and 67 services for Karim Fawaz. This counts Original Medicare only and measures volume, not quality.
- What is Karim Fawaz's NPI number?
- 1952338253. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Karim Fawaz, 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.
| Original Medicare patients | 48 |
|---|---|
| Services billed to Medicare | 67 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Biopsy of large bowel using a flexible endoscope (45380)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 pressure63%
- High cholesterol60%
- Diabetes40%
- Anxiety38%
- Chronic kidney disease31%
- COPD27%
Hospitals where Karim Fawaz works
Medicare's Facility Affiliation Data lists Karim Fawaz 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.
- Cambridge Health AllianceCambridge, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220011
Practice locations
Addresses where Karim Fawaz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1493 Cambridge StCambridge, MA 02139 (617) 665‑1000
- 230 Highland AveSomerville, MA 02143 (617) 591‑4500
Group practices
Medicare enrollment lists Karim Fawaz as a member of this group (CMS data updated October 2, 2026).
- Cambridge Public Health Commission656 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Cambridge
Clinicians with the same Medicare primary specialty in Cambridge, MA — not a recommendation.
Other clinicians in Cambridge Public Health Commission
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1967 (59 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952338253 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians