Michal F. Tomczak, MD

Medicare activity in 2024

Official CMS public-use data for Michal F. Tomczak, 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. Biopsy of large bowel using a flexible endoscope (45380)196 services
2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)158 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)101 services
4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)86 services
5. Insertion of needle into vein for collection of blood sample (36415)44 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 cholesterol75%
• High blood pressure72%
• Arthritis42%
• Depression27%
• Anxiety26%
• Chronic kidney disease25%

Hospitals where Michal F. Tomczak works

Medicare's Facility Affiliation Data lists Michal F. Tomczak 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 - NeedhamNeedham, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220083
• Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086

Practice locations

Addresses where Michal F. Tomczak is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Lyons StDedham, MA 02026 (781) 329‑1400
• 100 2nd AveNeedham, MA 02494 (781) 726‑4800
• 133 Brookline AveBoston, MA 02215 (617) 421‑1000
• 142 Berkeley StBoston, MA 02116 (617) 859‑5000

Group practices

Medicare enrollment lists Michal F. Tomczak as a member of this group (CMS data updated October 2, 2026).

• Atrius Health Inc1,222 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Massachusetts →

Other gastroenterologists in Dedham

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

• Daniel S. Mishkin, MD
• Jacques J. Reichling, MD
• Steven J. Shields, MD
• Sveta S. Oza, MD

All gastroenterologists in Dedham →

Other clinicians in Atrius Health Inc

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

• Scott A. Orrahood
• Amir Mor
• Adetokunbo O. Olotu, MD
• David R. Dobroski, MD
• Lindsay M. Shettle, NP
• Lillianna L. Griggs, NP

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