Quick answers
- Does Chantal A. Lewis accept Medicare assignment?
- Yes. Medicare's clinician data says Chantal A. Lewis 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 Chantal A. Lewis see?
- In 2024, CMS data shows 350 Original Medicare patients and 1,246 services for Chantal A. Lewis. This counts Original Medicare only and measures volume, not quality.
- What is Chantal A. Lewis's NPI number?
- 1821439985. 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 Chantal A. Lewis, 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 | 350 |
|---|---|
| Services billed to Medicare | 1,246 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)343 services
- Blood glucose (sugar) test performed by hand-held instrument (82962)280 services
- Insertion of needle into vein for collection of blood sample (36415)208 services
- Hemoglobin a1c level (83036)172 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)102 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%
- Diabetes72%
- Arthritis49%
- Ischemic heart disease42%
- Chronic kidney disease37%
Hospitals where Chantal A. Lewis works
Medicare's Facility Affiliation Data lists Chantal A. Lewis 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.
- Wellstar Cobb Medical CenterAustell, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110143
- Wellstar Douglas Medical CenterDouglasville, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110184
- Wellstar Kennestone Regional Medical CenterMarietta, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 110035
- Wellstar Paulding Medical CenterHiram, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 110042
Practice locations
Addresses where Chantal A. Lewis is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 3501 Baker Rd NW, Suite 100Acworth, GA 30101 (470) 267‑0620
- 3707 Largent NwwayMarietta, GA 30064 (678) 581‑5729
- 5150 Stilesboro N W Rd, Suite 220Kennesaw, GA 30152 (770) 424‑8222
- 625 Church NestMarietta, GA 30060 (770) 422‑2004
- 677 Church NestMarietta, GA 30060
Group practices
Medicare enrollment lists Chantal A. Lewis as a member of this group (CMS data updated October 2, 2026).
- Wellstar Medical Group LLC3,093 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in Georgia
Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.
Other clinicians in Wellstar Medical Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1821439985 |
| 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