Quick answers
- Does Lauren M. Castro accept Medicare assignment?
- Yes. Medicare's clinician data says Lauren M. Castro 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 Lauren M. Castro see?
- In 2024, CMS data shows 31 Original Medicare patients and 84 services for Lauren M. Castro. This counts Original Medicare only and measures volume, not quality.
- What is Lauren M. Castro's NPI number?
- 1699035576. 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 Lauren M. Castro, 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 | 31 |
|---|---|
| Services billed to Medicare | 84 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)13 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 cholesterol65%
- High blood pressure55%
Hospitals where Lauren M. Castro works
Medicare's Facility Affiliation Data lists Lauren M. Castro 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.
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520087
Practice locations
Addresses where Lauren M. Castro is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 123 SE 5th AveSpring Grove, MN 55974 (507) 498‑3302
- 125 5th Ave SESpring Grove, MN 55974 (507) 498‑3211
- 1600 Main StOnalaska, WI 54650 (608) 783‑4681
- 1836 S AveLa Crosse, WI 54601 (608) 782‑7300
- 1910 S AveLa Crosse, WI 54601
Group practices
Medicare enrollment lists Lauren M. Castro as a member of this group (CMS data updated October 2, 2026).
- Gundersen Clinic Ltd418 clinicians in the group
Specialties
- Oral Surgeryprimary
Other oral surgeons in Minnesota
Clinicians with the same Medicare primary specialty in Minnesota — not a recommendation.
Other clinicians in Gundersen Clinic Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | University Of California, Davis School Of Medicine |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699035576 |
| 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