Quick answers
- Does Jammie K. Barnes accept Medicare assignment?
- Yes. Medicare's clinician data says Jammie K. 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 Jammie K. Barnes see?
- In 2024, CMS data shows 462 Original Medicare patients and 20,342 services for Jammie K. Barnes. This counts Original Medicare only and measures volume, not quality.
- What is Jammie K. Barnes's NPI number?
- 1952551988. 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 Jammie K. 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 | 462 |
|---|---|
| Services billed to Medicare | 20,342 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, denosumab, 1 mg (J0897)4,860 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)468 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)290 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)252 services
- Injection of drug or substance under skin or into muscle (96372)207 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%
- Arthritis75%
- High blood pressure71%
- Osteoporosis38%
- Ischemic heart disease23%
- Depression23%
Hospitals where Jammie K. Barnes works
Medicare's Facility Affiliation Data lists Jammie K. Barnes 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.
- Kimble HospitalJunction, TX · Critical Access Hospital · Emergency services: listed by Medicare · CCN 451306
- Medina Regional HospitalHondo, TX · Critical Access Hospital · Emergency services: listed by Medicare · CCN 451330
- Methodist Hospital Hill CountryFredericksburg, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450604
- Peterson Regional Medical CenterKerrville, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450007
- Uvalde Memorial HospitalUvalde, TX · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 451387
Practice locations
Addresses where Jammie K. Barnes is enrolled with Medicare (CMS data updated October 2, 2026).
- 306 Wesley Dr, Suite AKerrville, TX 78028 (830) 258‑6249
- 575 Hill Country Dr, Suite 101Kerrville, TX 78028 (830) 258‑7090
Group practices
Medicare enrollment lists Jammie K. Barnes as a member of this group (CMS data updated October 2, 2026).
- Peterson Medical Associates191 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Other clinicians in Peterson Medical Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 2006 (20 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) | 1952551988 |
| 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