Alexander M. Villareal, M.D.
NPI 1609094457ActiveIndividual· Internal Medicine, Sleep Medicine· La Crosse, WI
Internal Medicine, Sleep Medicine (M.D.) with Gundersen Lutheran Medical Center Inc and 3 other groups, practicing in La Crosse, Wisconsin. In 2024 Medicare paid $38,964 for 652 patients, and Part D covered 350 of their prescriptions, 88% of them generic. Lists Gundersen Boscobel Area Hospital and Clinics and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1609094457 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 24, 2007 |
| Last updated in NPPES | Apr 29, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Sleep Medicine Primary | 207RS0012X | 57998 | WI |
| Internal Medicine | 207R00000X | MD431468 | PA |
| Internal Medicine, Sleep Medicine | 207RS0012X | MD431468 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Sleep Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 652 |
|---|---|
| Services billed | 1,216 across 18 procedure codes |
| Paid by Medicare | $38,964 |
Part D prescriptions in 2024
| Prescriptions (claims) | 350 · 422 30-day fills |
|---|---|
| Patients | 67 |
| Total drug cost | $32,519 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Sleep Medicine |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
- Southwest Health Center IncPlatteville, WI · 114 clinicians
- Saint Elizabeths Hospital of Wabasha IncWabasha, MN · 94 clinicians
Hospital affiliations
- Gundersen Boscobel Area Hospital and ClinicsBoscobel, WI
- Gundersen Lutheran Medical CenterLa Crosse, WI
- Reedsburg Area Medical CenterReedsburg, WI
- St Elizabeth Medical CenterWabasha, MN
- Vernon Memorial HospitalViroqua, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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