Matthew Winston Caldis, M.D., M.S.
Gastroenterology Physician · Madison, WI
Matthew Winston Caldis, M.D., M.S. is a gastroenterology physician with a practice address in Madison, Wisconsin, and NPI 1922461029, issued on Apr 5, 2016. Check the license (Wisconsin 68637-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matthew Winston Caldis
- Credential
- M.D., M.S.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 68637-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 750 University Row, Madison, WI 53705
- Phone
- (608) 890-5090
- Enumerated
- Apr 5, 2016
- Record last updated
- Aug 8, 2023
- Fax
- (608) 890-5049
- Medicare enrollment
- Enrolled (PECOS I20230810002967); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 340 in Wisconsin → Look up another NPI →
Also registered at 750 University Row
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julia Berian, M.D.Colon & Rectal Surgery Physician1740576339
- Antonio Bosch, MDGastroenterology Physician1295743656
- Nicole Boschuetz, M.D.Hepatology Physician1033506910
- Margaret BozdechPhysician Assistant1568027894
- Randall Brown, MDFamily Medicine Physician1376508481
Verify Matthew Winston Caldis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 68637-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average gastroenterology physician in 2024
415 Medicare Part D claims for 286 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Gavilyte-C210 claims
- Gavilyte-G25 claims
- Pantoprazole Sodium23 claims
- Stelara22 claims
- Omeprazole21 claims
- Mesalamine13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University OF Wisconsin Medical Foundation IncPortage, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Winston Caldis among 340 gastroenterology physician records in Wisconsin
Matthew Winston Caldis, M.D., M.S. 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 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2003 among the 239 with a school on file
- Record last updated2023 · 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 Madison → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Antonio Bosch, MDMadison, WI 537051295743656
- Freddy Caldera, D.O.Madison, WI 537051255594537
- Rodrigo Castillo, MDMadison, WI 537051811007305
- Ian Grimes, M.D.Madison, WI 537051275737165
- Megan LutzMadison, WI 537051306232863
- Gregory Nelligan, M.D.Madison, WI 537051205924842
- Vinay Patel, M.D.Madison, WI 537051639583750
- Mark Reichelderfer, MDMadison, WI 537051699736512
Common questions
What is Matthew Winston Caldis, M.D., M.S.'s NPI number?
Matthew Winston Caldis, M.D., M.S.'s National Provider Identifier (NPI) is 1922461029, issued on Apr 5, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Winston Caldis, M.D., M.S. located?
The NPPES record lists a practice address at 750 University Row, Madison, WI, 53705. Phone: (608) 890-5090. Providers update this record themselves, so call before visiting.
How can I verify Matthew Winston Caldis, M.D., M.S.'s license?
NPPES lists Wisconsin license number 68637-20, 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 Matthew Winston Caldis, M.D., M.S. prescribe under Medicare Part D?
In 2024, Matthew Winston Caldis, M.D., M.S. had 415 Medicare Part D claims for 286 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Matthew Winston Caldis, M.D., M.S.'s MIPS final score?
The 2023 MIPS final score is 77.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.