Quick answers
- Does Thomas R. Vanderheyden Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas R. Vanderheyden Jr. 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 Thomas R. Vanderheyden Jr. see?
- In 2024, CMS data shows 669 Original Medicare patients and 1,020 services for Thomas R. Vanderheyden Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Thomas R. Vanderheyden Jr.'s NPI number?
- 1528222387. 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 Thomas R. Vanderheyden Jr., 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 | 669 |
|---|---|
| Services billed to Medicare | 1,020 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)206 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)156 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)81 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)75 services
- Biopsy of large bowel using a flexible endoscope (45380)72 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 cholesterol74%
- Arthritis46%
- Diabetes29%
- Ischemic heart disease24%
- Depression23%
Hospitals where Thomas R. Vanderheyden Jr. works
Medicare's Facility Affiliation Data lists Thomas R. Vanderheyden Jr. 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.
- Community Hospital of Bremen IncBremen, IN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 151300
- Elkhart General HospitalElkhart, IN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 150018
- Memorial Hospital of South BendSouth Bend, IN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 150058
- Saint Joseph Regional Medical CenterMishawaka, IN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 150012
- Saint Joseph Regional Medical Center - PlymouthPlymouth, IN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 150076
Practice locations
Addresses where Thomas R. Vanderheyden Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 17501 Generations DrSouth Bend, IN 46635 (574) 234‑0049
- 1919 Lake AvePlymouth, IN 46563 (574) 780‑8602
Group practices
Medicare enrollment lists Thomas R. Vanderheyden Jr. as a member of this group (CMS data updated October 2, 2026).
- Michiana Gastroenterology, Inc12 clinicians in the group
Specialties
- Internal Medicineprimary
- Gastroenterologyalso
Other internal medicine doctors in South Bend
Clinicians with the same Medicare primary specialty in South Bend, IN — not a recommendation.
Other clinicians in Michiana Gastroenterology, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528222387 |
| 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