Quick answers
- Does Wittaya M. Sattasiri accept Medicare assignment?
- Yes. Medicare's clinician data says Wittaya M. Sattasiri 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 Wittaya M. Sattasiri see?
- In 2024, CMS data shows 473 Original Medicare patients and 4,876 services for Wittaya M. Sattasiri. This counts Original Medicare only and measures volume, not quality.
- What is Wittaya M. Sattasiri's NPI number?
- 1821198029. 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 Wittaya M. Sattasiri, 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 | 473 |
|---|---|
| Services billed to Medicare | 4,876 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)1,653 services
- Calculation of radiation therapy dose (77300)627 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)430 services
- Radiation treatment management, 5 treatment sessions (77427)417 services
- Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)408 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- Arthritis39%
- Diabetes33%
- Chronic kidney disease33%
Hospitals where Wittaya M. Sattasiri works
Medicare's Facility Affiliation Data lists Wittaya M. Sattasiri 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.
- Marshall Medical CenterLewisburg, TN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 441309
- Maury Regional HospitalColumbia, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440073
- Vanderbilt University Medical CenterNashville, TN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 440039
- Wayne Medical CenterWaynesboro, TN · Rural Emergency Hospital · Emergency services: listed by Medicare · CCN 440780
Practice locations
Addresses where Wittaya M. Sattasiri is enrolled with Medicare (CMS data updated October 2, 2026).
- 1224 Trotwood AveColumbia, TN 38401 (931) 380‑4057
- 808 S James M Campbell BlvdColumbia, TN 38401 (931) 388‑4057
Group practices
Medicare enrollment lists Wittaya M. Sattasiri as a member of this group (CMS data updated October 2, 2026).
- Columbia Cancer Institue Inc2 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Tennessee
Clinicians with the same Medicare primary specialty in Tennessee — not a recommendation.
Other clinicians in Columbia Cancer Institue Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Stanford University School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821198029 |
| 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