Dr Alexander M Villareal, MD - Medicare Sleep Medicine in La Crosse, WI

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Dr Alexander M Villareal, MD is a medicare enrolled "Internal Medicine - Sleep Medicine" physician in La Crosse, Wisconsin. He graduated from medical school in 1999 and has 25 years of diverse experience with area of expertise as Sleep Medicine. He is a member of the group practice Gundersen Lutheran Medical Center Inc and his current practice location is 1836 South Ave, La Crosse, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (608) 782-7300.

Dr Alexander M Villareal is licensed to practice in Wisconsin (license number 57998) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1609094457.

Contact Information

Dr Alexander M Villareal, MD
1836 South Ave,
La Crosse, WI 54601-5429
(608) 782-7300
Not Available

Map and Direction




Physician's Profile

Full NameDr Alexander M Villareal
GenderMale
SpecialitySleep Medicine
Experience25 Years
Location1836 South Ave, La Crosse, Wisconsin
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Alexander M Villareal graduated from medical school in 1999
  NPI Data:
  • NPI Number: 1609094457
  • Provider Enumeration Date: 04/24/2007
  • Last Update Date: 04/29/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 1658462445
  • Enrollment ID: I20130123000568

Medical Identifiers

Medical identifiers for Dr Alexander M Villareal such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609094457NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD431468 (Pennsylvania)Secondary
207RS0012XInternal Medicine - Sleep Medicine MD431468 (Pennsylvania)Secondary
207RS0012XInternal Medicine - Sleep Medicine 57998 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Gundersen Lutheran Medical CenterLa crosse, WIHospital
Bellin Memorial HospitalGreen bay, WIHospital
Vernon Memorial HospitalViroqua, WIHospital
Gundersen St Josephs Hospital And ClinicsHillsboro, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gundersen Lutheran Medical Center Inc2163331414789

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Alexander M Villareal allows following entities to bill medicare on his behalf.
Entity NameGundersen Clinic Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851343115
PECOS PAC ID: 9638082779
Enrollment ID: O20031106000139
Entity NameSouthwest Health Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831279793
PECOS PAC ID: 3072427772
Enrollment ID: O20031117000839
Entity NameMoundview Memorial Hospital & Clinics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710939533
PECOS PAC ID: 1355250432
Enrollment ID: O20031121000846
Entity NameReedsburg Area Medical Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891796710
PECOS PAC ID: 9830008259
Enrollment ID: O20031208000083
Entity NameGrant Regional Health Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1255339867
PECOS PAC ID: 9638079445
Enrollment ID: O20040109000282
Entity NameMemorial Hospital Of Boscobel
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760459846
PECOS PAC ID: 8325957673
Enrollment ID: O20040115000725
Entity NameBlack River Memorial Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811940331
PECOS PAC ID: 3173431178
Enrollment ID: O20040128000517
Entity NameTomah Memorial Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992970453
PECOS PAC ID: 6901897016
Enrollment ID: O20040519000123
Entity NameSt Joseph's Health Services Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104031798
PECOS PAC ID: 3971586439
Enrollment ID: O20040615000273
Entity NameTri-county Memorial Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124063573
PECOS PAC ID: 4587642418
Enrollment ID: O20040708000696
Entity NameAdvanced Ear Nose & Throat Specialists Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689782427
PECOS PAC ID: 9335106319
Enrollment ID: O20041210000619
Entity NameBlack River Memorial Hospital Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1811940331
PECOS PAC ID: 3173431178
Enrollment ID: O20061104000654
Entity NameGundersen Lutheran Medical Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376593442
PECOS PAC ID: 2163331414
Enrollment ID: O20130619000254
Entity NameGrant Regional Health Center Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1255339867
PECOS PAC ID: 9638079445
Enrollment ID: O20160229002869
Entity NameSaint Elizabeths Hospital Of Wabasha Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659355600
PECOS PAC ID: 5092619387
Enrollment ID: O20171103000047

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Alexander M Villareal is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Alexander M Villareal, MD
1836 South Ave,
La Crosse, WI 54601-5429

Ph: (608) 782-7300		Dr Alexander M Villareal, MD
1836 South Ave,
La Crosse, WI 54601-5429

Ph: (608) 782-7300

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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