Thomas Castiglione, MD

Medicare activity in 2024

Official CMS public-use data for Thomas Castiglione, 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. Insertion of needle into vein for collection of blood sample (36415)475 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)264 services
3. Blood test, basic group of blood chemicals (calcium, total) (80048)218 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)170 services
5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)157 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 cholesterol70%
• High blood pressure62%
• Arthritis40%
• Diabetes22%
• Anxiety22%
• Chronic kidney disease21%

Hospitals where Thomas Castiglione works

Medicare's Facility Affiliation Data lists Thomas Castiglione 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 Hospital PlymouthPlymouth, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220060
• South Shore HospitalSouth Weymouth, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220100

Practice locations

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

• 143 Longwater DrNorwell, MA 02061 (781) 878‑5200

Group practices

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

• South Shore Medical Center, Inc.175 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Norwell

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

• Arslan Talat, MD
• Ariella Krones, MD
• Edward W. Nalband, MD
• Sean O'Reilly, MD
• Brian Gill, MD
• Aftab Iqbal, MD
• John M. Stevenson, MD
• Leyda D. Delgado, MD

All internal medicine doctors in Norwell →

Other clinicians in South Shore Medical Center, Inc.

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

• Timothy Johnson
• Mia S. Ames, PA
• Harjot K. Thakral, MD
• Arslan Talat, MD
• Patrick J. Welch, PA
• Christopher M. Kenney, 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