Catherine Iasiello

Medicare activity in 2024

Official CMS public-use data for Catherine Iasiello, 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)363 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)181 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)138 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)72 services
5. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)29 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%
• Arthritis49%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)48%
• Diabetes32%
• Ischemic heart disease32%

Hospitals where Catherine Iasiello works

Medicare's Facility Affiliation Data lists Catherine Iasiello 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.

• Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
• Holy Family HospitalMethuen, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220080
• Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071
• Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220010

Practice locations

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

• 450 Brookline AveBoston, MA 02215

Group practices

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

• Dana-Farber Cancer Institute, Inc.684 clinicians in the group

Specialties

• Hematology/Oncologyprimary
• Medical Oncologyalso

Find other Hematology/Oncology doctors in Massachusetts →

Other hematologist-oncologists in Boston

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

• Nasima Khatoon, MD
• Bruno B. Bockorny, MD
• Suzanne J. Forrest, MD
• Manisha J. Patel, MD
• Joaquin Bellmunt Molins, MD
• Jorge J. Castillo, MD
• Andrew Staron, MD
• Suzanne Shusterman, MD

All hematologist-oncologists in Boston →

Other clinicians in Dana-Farber Cancer Institute, Inc.

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

• Laura Caprario, MD
• Jennifer Byer, MD
• Nasima Khatoon, MD
• Matthew S. Davids, MD
• Jennifer A. Chan, MD
• Zachary S. Sager, 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