John M. Reynen, M.D.
Anesthesiology Physician · La Crosse, WI
John M. Reynen, M.D. is an anesthesiology physician with a practice address in La Crosse, Wisconsin, and NPI 1669750774, issued on Jul 25, 2011. Check the license (Wisconsin 59849, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John M. Reynen
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 59849 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
- Jul 25, 2011
- Record last updated
- Jul 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150721000484); accepts Medicare assignment
- Medical or professional school
- Sanford School Of Medicine Of University Of South Dakota, 2011
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,313 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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- 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 John M. Reynen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 59849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Gundersen Lutheran Medical Center IncLa Crosse, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John M. Reynen among 1,313 anesthesiology physician records in Wisconsin
John M. Reynen, M.D. is one of 1,313 anesthesiology physician records with a practice address in Wisconsin. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 67% of them.
- NPI issued2011 · 67% of these records are older, 31% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2011 · median 2006 among the 872 with a school on file
- Record last updated2015 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
51 anesthesiology physician records list a practice address in La Crosse
They are 51 of the 3,735 NPPES records with a practice address in La Crosse, and 1,313 anesthesiology physician records in Wisconsin.
All 1,313 in Wisconsin → Every provider in La Crosse → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Michael Bottcher, MDLa Crosse, WI 546011922002609
- John Burelbach, MDLa Crosse, WI 546011316941982
- Stephen Carlisle, MDLa Crosse, WI 546011114921715
- Kimberley Culp, MDLa Crosse, WI 546011912902149
- Kalpana Dhanak, MDLa Crosse, WI 546011851396048
- Felix Fernandes, MDLa Crosse, WI 546011669477634
- Lois Grootwassink, MDLa Crosse, WI 546011629073283
- Robert Groshek, MDLa Crosse, WI 546011003811688
Common questions
What is John M. Reynen, M.D.'s NPI number?
John M. Reynen, M.D.'s National Provider Identifier (NPI) is 1669750774, issued on Jul 25, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John M. Reynen, M.D. 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 John M. Reynen, M.D.'s license?
NPPES lists Wisconsin license number 59849, 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.
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.