Paul Thomas Merchant, MD
Nephrology Physician · La Crosse, WI
Paul Thomas Merchant, MD is a nephrology physician with a practice address in La Crosse, Wisconsin, and NPI 1427554153, issued on Apr 2, 2018. Check the license (Wisconsin 84040-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Paul Thomas Merchant
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 84040-20 WI
35.147903 OH
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- Apr 2, 2018
- Record last updated
- Aug 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20240701003894); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 207 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 Paul Thomas Merchant in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 84040-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average nephrology physician in 2024
289 Medicare Part D claims for 87 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Losartan Potassium34 claims
- Torsemide24 claims
- Lisinopril23 claims
- Amlodipine Besylate15 claims
- Furosemide15 claims
- Hydrochlorothiazide15 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 2 group practices
- Gundersen Clinic LtdTomah, WI
- 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).
Paul Thomas Merchant among 207 nephrology physician records in Wisconsin
Paul Thomas Merchant, MD is one of 207 nephrology physician records with a practice address in Wisconsin. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 87% of them.
- NPI issued2018 · 87% of these records are older, 8% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2018 · median 2004 among the 157 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Wisconsin
There are 207 nephrology physician records in Wisconsin.
All 207 in Wisconsin → Every provider in La Crosse → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Christopher Adams, MDLa Crosse, WI 546011760521769
- Muhammad AzharLa Crosse, WI 546011336985167
- Samrat Bhat, M.DLa Crosse, WI 546011053503607
- Oscar Garcia Valencia, MDLa Crosse, WI 546011447710439
- Arvind Garg, M.D.La Crosse, WI 546011154551968
- Leah Metz, MDLa Crosse, WI 546011467404855
- Sudheer Reddy Muduganti, M.DLa Crosse, WI 546011538335948
- Thu Nguyen, DOLa Crosse, WI 546011053974220
Common questions
What is Paul Thomas Merchant, MD's NPI number?
Paul Thomas Merchant, MD's National Provider Identifier (NPI) is 1427554153, issued on Apr 2, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Paul Thomas Merchant, 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 Paul Thomas Merchant, MD's license?
NPPES lists Wisconsin license number 84040-20, 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 Paul Thomas Merchant, MD prescribe under Medicare Part D?
In 2024, Paul Thomas Merchant, MD had 289 Medicare Part D claims for 87 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.