Quick answers
- Does Christina O. Barnes accept Medicare assignment?
- Yes. Medicare's clinician data says Christina O. Barnes 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 Christina O. Barnes see?
- In 2024, CMS data shows 308 Original Medicare patients and 10,391 services for Christina O. Barnes. This counts Original Medicare only and measures volume, not quality.
- What is Christina O. Barnes's NPI number?
- 1689790248. 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 Christina O. Barnes, 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 | 308 |
|---|---|
| Services billed to Medicare | 10,391 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, omalizumab, 5 mg (J2357)3,810 services
- Test for allergy using allergenic extract (95004)2,081 services
- Professional service for preparation and provision of 1 or more antigens (95165)340 services
- Test for allergy using allergenic extract injected into skin (95024)230 services
- Professional service for multiple injections of allergen (95117)188 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 cholesterol71%
- High blood pressure68%
- Arthritis49%
- Asthma39%
- Diabetes23%
- Depression22%
Practice locations
Addresses where Christina O. Barnes is enrolled with Medicare (CMS data updated October 2, 2026).
- 211 N Eddy StSouth Bend, IN 46617 (574) 234‑8161
- 303 N Nappanee StElkhart, IN 46514 (574) 232‑4800
- 700 E Beardsley AveElkhart, IN 46514 (574) 234‑8161
Group practices
Medicare enrollment lists Christina O. Barnes as a member of this group (CMS data updated October 2, 2026).
- The South Bend Clinic LLC175 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Internal Medicinealso
Other allergist and immunologists in Indiana
Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.
Other clinicians in The South Bend Clinic LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | University Of Tennessee, Hsc, College Of Medicine |
|---|---|
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689790248 |
| 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
- 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