Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Alexander M. Villareal, MD

Individual provider Internal Medicine Physician · NPI 1609094457

Dr. Alexander M. Villareal, MD practises Sleep Medicine in LA Crosse, Wisconsin. Qualified in 1999, 27 years ago. Practices with Southwest Health Center Inc, a 113-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania and Wisconsin.

Years since qualifying
27
Licensed in
PA, WI
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1836 S Ave
LA Crosse, WI 54601-5429 Not confirmed with CMS for 10 years — call before visiting
Phone: (608) 782-7300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence 57998 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD431468 (PA)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence MD431468 (PA)

Record details

NPI number1609094457
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 24, 2007
Last updated in NPPESApril 29, 2016

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtySLEEP MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Southwest Health Center Inc — 113 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients652
Services billed 1,216 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Southwest Health Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 113 clinicians in the practice; 12 are shown here.

Other providers in LA Crosse