Quick answers
- Does Colby T. Chastain accept Medicare assignment?
- Yes. Medicare's clinician data says Colby T. Chastain 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 Colby T. Chastain see?
- In 2024, CMS data shows 3,189 Original Medicare patients and 4,618 services for Colby T. Chastain. This counts Original Medicare only and measures volume, not quality.
- What is Colby T. Chastain's NPI number?
- 1922056217. 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 Colby T. Chastain, 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 | 3,189 |
|---|---|
| Services billed to Medicare | 4,618 |
| Different services or procedures | 176 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- X-ray of chest, 1 view (71045)514 services
- Screening 3d breast mammography (77063)238 services
- Screening mammography (77067)238 services
- Ct scan of abdomen and pelvis with contrast (74177)233 services
- Ct scan head or brain without contrast (70450)197 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%
- Arthritis57%
- Chronic kidney disease40%
- Ischemic heart disease38%
- Anxiety34%
Hospitals where Colby T. Chastain works
Medicare's Facility Affiliation Data lists Colby T. Chastain 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.
- Coastal Carolina HospitalHardeeville, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420101
- Memorial Health Meadows HospitalVidalia, GA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 110128
- Northeast Georgia Medical Center, IncGainesville, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110029
- Novant Health Hilton Head Medical CenterHilton Head Island, SC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 420080
- Savannah Health Services LLC dba Memorial Health University Medical CenterSavannah, GA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 110036
Practice locations
Addresses where Colby T. Chastain is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 1193 Estates DrGainesville, GA 30501 (770) 282‑8820
- 136 Traders WayPooler, GA 31322 (786) 621‑3900
- 1400 River PlBraselton, GA 30517 (770) 219‑9000
- 15 Moss Creek VlgHilton Head Island, SC 29926 (843) 836‑7000
- 25 Hospital Ctr BlvdHilton Head, SC 29926 (843) 681‑6122
Group practices
Medicare enrollment lists Colby T. Chastain as a member of these groups (CMS data updated October 2, 2026).
- Atlantic Radiology Associates LLC82 clinicians in the group
- Gainesville Radiology Group PC58 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Gainesville
Clinicians with the same Medicare primary specialty in Gainesville, GA — not a recommendation.
Other clinicians in Atlantic Radiology Associates LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922056217 |
| 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