Quick answers
- Does Vincent P. Grzywacz Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Vincent P. Grzywacz Ii 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 Vincent P. Grzywacz Ii see?
- In 2024, CMS data shows 172 Original Medicare patients and 2,006 services for Vincent P. Grzywacz Ii. This counts Original Medicare only and measures volume, not quality.
- What is Vincent P. Grzywacz Ii's NPI number?
- 1033603592. 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 Vincent P. Grzywacz Ii, 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 | 172 |
|---|---|
| Services billed to Medicare | 2,006 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)1,043 services
- Calculation of radiation therapy dose (77300)207 services
- Radiation treatment management, 5 treatment sessions (77427)199 services
- Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)154 services
- Design and construction of complex radiation treatment device (77334)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 cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- High blood pressure72%
- Diabetes40%
- Arthritis35%
- Ischemic heart disease28%
Hospitals where Vincent P. Grzywacz Ii works
Medicare's Facility Affiliation Data lists Vincent P. Grzywacz Ii 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.
- Bon Secours-St Francis Xavier HospitalCharleston, SC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 420065
- Trident Medical CenterCharleston, SC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 420079
Practice locations
Addresses where Vincent P. Grzywacz Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 120 Medical Park DrWalterboro, SC 29488
- 9330 Medical Plaza DrCharleston, SC 29406 (843) 847‑4946
Group practices
Medicare enrollment lists Vincent P. Grzywacz Ii as a member of these groups (CMS data updated October 2, 2026).
- Savannah Multispecialty Associates LLC125 clinicians in the group
- Coastal Carolina Multispecialty Associates LLC49 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Walterboro
Clinicians with the same Medicare primary specialty in Walterboro, SC — not a recommendation.
Other clinicians in Savannah Multispecialty Associates LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Central Michigan College Of Medicine |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033603592 |
| 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