Steven C. Schlack-Haerer, MD
Gastroenterology Physician · La Crosse, WI
Steven C. Schlack-Haerer, MD is a gastroenterology physician with a practice address in La Crosse, Wisconsin, and NPI 1568466142, issued on Jun 10, 2005. Check the license (Wisconsin 33768, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Steven C. Schlack-Haerer
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 33768 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
- Jun 10, 2005
- Record last updated
- Feb 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 32231700 WI
- Medicare enrollment
- Enrolled (PECOS I20200813000540); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 340 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.
- Frank Aberger, MDGastroenterology Physician1396748711
- Bradley Abicht, DPMPodiatrist1962632166
- Carter Abicht, DOAnesthesiology Physician1932736642
- Grace AbichtCertified Registered Nurse Anesthetist1003651555
- Paul Abicht, CRNACertified Registered Nurse Anesthetist1528061843
- Mateen Abidi, M.DCardiovascular Disease Physician1730333980
Verify Steven C. Schlack-Haerer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average gastroenterology physician in 2024
232 Medicare Part D claims for 105 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole66 claims
- Pantoprazole Sodium37 claims
- Peg-3350 And Electrolytes24 claims
- Gavilyte-G15 claims
- Azathioprine11 claims
- Humira(Cf) Pen11 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 one group practice
- Gundersen Lutheran Medical Center IncWinona, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven C. Schlack-Haerer among 340 gastroenterology physician records in Wisconsin
Steven C. Schlack-Haerer, MD is one of 340 gastroenterology physician records with a practice address in Wisconsin. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1991 · median 2003 among the 239 with a school on file
- Record last updated2016 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Wisconsin
There are 340 gastroenterology physician records in Wisconsin.
All 340 in Wisconsin → Every provider in La Crosse → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Frank Aberger, MDLa Crosse, WI 546011396748711
- Heather Chial, MDLa Crosse, WI 546011427053768
- Gregory Cramer, MDLa Crosse, WI 546011104807833
- Milan Folkers, MDLa Crosse, WI 546011619064094
- Yonas Getachew, M.D.La Crosse, WI 546011669499000
- James Groskreutz, MDLa Crosse, WI 546011548265127
- Michael Henry, MDLa Crosse, WI 546011366447815
- Kenneth Horth, MDLa Crosse, WI 546011154326684
Common questions
What is Steven C. Schlack-Haerer, MD's NPI number?
Steven C. Schlack-Haerer, MD's National Provider Identifier (NPI) is 1568466142, issued on Jun 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Steven C. Schlack-Haerer, 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 Steven C. Schlack-Haerer, MD's license?
NPPES lists Wisconsin license number 33768, 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 Steven C. Schlack-Haerer, MD prescribe under Medicare Part D?
In 2024, Steven C. Schlack-Haerer, MD had 232 Medicare Part D claims for 105 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.