Matthew J. Mouser, MD
Internal Medicine Physician · Fergus Falls, WI
Matthew J. Mouser, MD is an internal medicine physician with a practice address in Fergus Falls, Wisconsin, and NPI 1093767097, issued on May 17, 2006. Check the license (Wisconsin 48579, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matthew J. Mouser
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 48579 WI
50543 MN
Self-reported in NPPES; status is on the state search - Practice location
- 712 South Cascade Street, Fergus Falls, WI 56537
- Phone
- (218) 736-8000
- Enumerated
- May 17, 2006
- Record last updated
- Feb 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (218) 736-8757
- Medicaid ID
- 34803500 WI
- Medicare enrollment
- Enrolled (PECOS I20080804000570); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Verify Matthew J. Mouser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 48579Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% more Medicare Part D claims than the average internal medicine physician in 2024
5,316 Medicare Part D claims for 267 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 176 claims were for opioids.
Most prescribed
- Furosemide302 claims
- Atorvastatin Calcium206 claims
- Levothyroxine Sodium204 claims
- Amlodipine Besylate167 claims
- Losartan Potassium167 claims
- Simvastatin160 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): 85.2 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).
One hospital affiliation
- Prairie Ridge Hospital And Health ServicesFergus Falls, MN · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Matthew J. Mouser among 2,078 internal medicine physician records in Wisconsin
Matthew J. Mouser, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2004 · median 2002 among the 1,098 with a school on file
- Record last updated2017 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Wisconsin
There are 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Loyda Loria, MDWinneconne, WI 549861407841307
- Alejandro Eisma, MDWinnebago, WI 549851225026990
- C Mork, M.D.Winnebago, WI 549851134289986
- Nikolo Quinones, MDWinnebago, WI 549851750498077
- Mandip Bartels, M.D.Waupaca, WI 549811477569275
- Craig Maskil, MDRedgranite, WI 549701194810846
- Marie Weber, MDNew London, WI 549611811981830
- Stephen Bullard, M.D.Neenah, WI 549561508872417
Common questions
What is Matthew J. Mouser, MD's NPI number?
Matthew J. Mouser, MD's National Provider Identifier (NPI) is 1093767097, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthew J. Mouser, MD located?
The NPPES record lists a practice address at 712 South Cascade Street, Fergus Falls, WI, 56537. Phone: (218) 736-8000. Providers update this record themselves, so call before visiting.
How can I verify Matthew J. Mouser, MD's license?
NPPES lists Wisconsin license number 48579, 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 J. Mouser, MD prescribe under Medicare Part D?
In 2024, Matthew J. Mouser, MD had 5,316 Medicare Part D claims for 267 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Matthew J. Mouser, MD's MIPS final score?
The 2023 MIPS final score is 85.2 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.