Allen C. Foster, MD
Sleep Medicine (Internal Medicine) Physician · La Crosse, WI
Allen C. Foster, MD is a sleep medicine (internal medicine) physician with a practice address in La Crosse, Wisconsin, and NPI 1043261399, issued on May 12, 2006. Check the license (Wisconsin 38156-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Allen C. Foster
- Credential
- MD
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License number
- 38156-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- May 12, 2006
- Record last updated
- Apr 18, 2024
- Medicaid ID
- 32286700 WI
- Medicare enrollment
- Enrolled (PECOS I20080213000342); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (internal medicine) physician records → All 27 in Wisconsin → Look up another NPI →
Also registered at 1836 South Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mateen Abidi, M.DCardiovascular Disease Physician1730333980
Verify Allen C. Foster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 38156-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average sleep medicine (internal medicine) physician in 2024
261 Medicare Part D claims for 90 beneficiaries, against an average of 585 among the 852 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Gabapentin97 claims
- Clonazepam23 claims
- Armodafinil19 claims
- Pramipexole Dihydrochloride19 claims
- Ropinirole Hcl19 claims
- Modafinil16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 3 group practices
- Gundersen Clinic LtdTomah, WI
- Gundersen Lutheran Medical Center IncLa Crosse, WI
- Saint Elizabeths Hospital OF Wabasha IncLa Crosse, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allen C. Foster among 27 sleep medicine (internal medicine) physician records in Wisconsin
Allen C. Foster, MD is one of 27 sleep medicine (internal medicine) physician records with a practice address in Wisconsin. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 56% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2001 among the 17 with a school on file
- Record last updated2024 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RS0012X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Internal Medicine) Physician providers in Wisconsin
There are 27 sleep medicine (internal medicine) physician records in Wisconsin.
All 27 in Wisconsin → Every provider in La Crosse → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Daren Tobert, MDLa Crosse, WI 546011962406728
- Alexander Villareal, M.D.La Crosse, WI 546011609094457
- Amit Gupta, M.D.Green Bay, WI 543111679991277
- James Gapinski, MDGreen Bay, WI 543081922114768
- Ethan Emmons, MDGreen Bay, WI 543011265416325
- Deane Franso, M.D.Green Bay, WI 543011407122906
- Kabir Ahmed, M.D.Fond Du Lac, WI 549351528325891
- Nazi Khan, MDColumbus, WI 539251225004245
Common questions
What is Allen C. Foster, MD's NPI number?
Allen C. Foster, MD's National Provider Identifier (NPI) is 1043261399, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allen C. Foster, MD located?
The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify Allen C. Foster, MD's license?
NPPES lists Wisconsin license number 38156-020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allen C. Foster, MD prescribe under Medicare Part D?
In 2024, Allen C. Foster, MD had 261 Medicare Part D claims for 90 beneficiaries; the average among sleep medicine (internal medicine) physician prescribers was 585. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.