Gregory J. Matthews, MD
Family Medicine Physician · Brown Deer, WI
Gregory J. Matthews, MD is a family medicine physician with a practice address in Brown Deer, Wisconsin, and NPI 1770524746, issued on Jun 9, 2006. Check the license (Wisconsin 32337, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory J. Matthews
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 32337 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9233 N Green Bay RD, Brown Deer, WI 53209
- Phone
- (414) 270-8150
- Enumerated
- Jun 9, 2006
- Record last updated
- Jun 12, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 31730700 WI
- Medicare enrollment
- Enrolled (PECOS I20080128000184); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1990
- Entity
- Type 1 · individual
Also registered at 9233 N Green Bay RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniela Angeli, PAPhysician Assistant1073690301
- William Digilio, MDSurgery Physician1669433058
- Michael Fetherston, MDFamily Medicine Physician1639130040
- Michael Johnstone, MDFamily Medicine Physician1982665394
- Elise Mossallati, APRNNurse Practitioner1841436987
- Michael Plotkin, DOFamily Medicine Physician1881636819
Verify Gregory J. Matthews in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 32337Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% more Medicare Part D claims than the average family medicine physician in 2024
6,730 Medicare Part D claims for 540 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 157 claims were for opioids.
Most prescribed
- Atorvastatin Calcium445 claims
- Lisinopril324 claims
- Levothyroxine Sodium308 claims
- Amlodipine Besylate296 claims
- Losartan Potassium291 claims
- Pantoprazole Sodium195 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): 75.8 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
- Columbia St Marys Hospital Milwaukee IncWest Allis, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
15 family medicine physician records list a practice address in Brown Deer
They are 15 of the 371 NPPES records with a practice address in Brown Deer, and 3,765 family medicine physician records in Wisconsin.
All 15 in Brown Deer → All 3,765 in Wisconsin → Every provider in Brown Deer →
Other family medicine physician records in Wisconsin
- Ashraf AbbasAppleton, WI1558723775
- Ghudran Abdulal, MDNew Berlin, WI1083622666
- Yusuf Abdullah, DOSun Prairie, WI1437788478
- Vanessa Abejuela-Matt, D.O.Mount Pleasant, WI1558687749
- Emily Abeyta, MDWaukesha, WI1386905107
- Jeanette Abraham, MDWeston, WI1205895810
- Sarada Abraham, M.D.Oconomowoc, WI1962851972
- Kirsten Abramson, MDMadison, WI1417909979
- Alexandra Adams, MD PHDMadison, WI1184689291
- David AdamsMadison, WI1992986897
Common questions
What is Gregory J. Matthews, MD's NPI number?
Gregory J. Matthews, MD's National Provider Identifier (NPI) is 1770524746, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory J. Matthews, MD located?
The NPPES record lists a practice address at 9233 N Green Bay RD, Brown Deer, WI, 53209. Phone: (414) 270-8150. Providers update this record themselves, so call before visiting.
How can I verify Gregory J. Matthews, MD's license?
NPPES lists Wisconsin license number 32337, 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 Gregory J. Matthews, MD prescribe under Medicare Part D?
In 2024, Gregory J. Matthews, MD had 6,730 Medicare Part D claims for 540 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Gregory J. Matthews, MD's MIPS final score?
The 2023 MIPS final score is 75.8 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.