Anne-Sophie Loonis, MD

Medicare activity in 2024

Official CMS public-use data for Anne-Sophie Loonis, 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. Screening 3d breast mammography (77063)273 services
2. Screening mammography (77067)273 services
3. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)161 services
4. X-ray of chest, 2 views (71046)143 services
5. Ct scan head or brain without contrast (70450)127 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 cholesterol68%
• High blood pressure64%
• Arthritis46%
• Anxiety33%
• Depression31%
• Osteoporosis27%

Hospitals where Anne-Sophie Loonis works

Medicare's Facility Affiliation Data lists Anne-Sophie Loonis 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.

• Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
• Cambridge Health AllianceCambridge, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220011
• Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171
• Mount Auburn HospitalCambridge, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220002

Practice locations

Addresses where Anne-Sophie Loonis is enrolled with Medicare (CMS data updated October 2, 2026).

• 22 Mill StArlington, MA 02476 (617) 492‑3500
• 330 Mount Auburn StCambridge, MA 02138 (617) 499‑5070

Group practices

Medicare enrollment lists Anne-Sophie Loonis as a member of this group (CMS data updated October 2, 2026).

• Schatzki Associates Inc18 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Massachusetts →

Other radiologists in Arlington

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

• James C. Chen, MD
• Ralph L. Reichle, MD
• Philip A. Rogoff, MD
• Holly Brideau, MD
• Donald F. Romanelli, MD
• George Wu, MD
• Monica J. Wood, MD
• Theodore Brown, MD

All radiologists in Arlington →

Other clinicians in Schatzki Associates Inc

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

• Holly Brideau, MD
• Jacques P. Sasson, MD
• Maryellen R. Sun, 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