Quick answers
- Does Charmaine Sundberg accept Medicare assignment?
- Yes. Medicare's clinician data says Charmaine Sundberg 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.
- What is Charmaine Sundberg's NPI number?
- 1578372587. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Charmaine Sundberg works
Medicare's Facility Affiliation Data lists Charmaine Sundberg 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.
- Ascension Seton HaysKyle, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 670056
- Dell Seton Medical Center at the University of TXAustin, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 450124
- Mercy Medical CenterMerced, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050444
Practice locations
Addresses where Charmaine Sundberg is enrolled with Medicare (CMS data updated October 2, 2026).
- 2400 Round Rock AveRound Rock, TX 78681 (512) 341‑1000
- 333 Mercy AveMerced, CA 95340 (209) 564‑5140
- 919 E 32nd St, St David'S Med CtrAustin, TX 78705 (830) 997‑4353
Group practices
Medicare enrollment lists Charmaine Sundberg as a member of these groups (CMS data updated October 2, 2026).
- Longhorn Emergency Medical Associates PA159 clinicians in the group
- San Joaquin Emergency Medical Associates15 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Round Rock
Clinicians with the same Medicare primary specialty in Round Rock, TX — not a recommendation.
Other clinicians in Longhorn Emergency Medical Associates PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2024 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578372587 |
| 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
- 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