Matt Zak, M.D.
Psychiatry Physician · De Pere, WI
Matt Zak, M.D. is a psychiatry physician with a practice address in De Pere, Wisconsin, and NPI 1275621807, issued on Oct 10, 2006. Check the license (Wisconsin 46164-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matt Zak
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 46164-020 WI
036-113009 IL
50191 MN
Self-reported in NPPES; status is on the state search - Practice location
- 3860 Monroe RD, De Pere, WI 54115
- Phone
- (920) 496-4700
- Enumerated
- Oct 10, 2006
- Record last updated
- Nov 1, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid IDs
- 1275621807 MN
1575621807 WI - Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 929 in Wisconsin → Look up another NPI →
Also registered at 3860 Monroe RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Abts, DPTPhysical Therapist1346728847
- Stephen Asma, MDFamily Medicine Physician1639103187
- Aleksandra Babiarz, MDFamily Medicine Physician1083077762
- Kathleen Barrow, MS, LMFTMarriage & Family Therapist1144679481
- Lauren Bellin, APSWClinical Social Worker1467386193
- Dan Braaten, LMFT, SACMarriage & Family Therapist1053477158
Verify Matt Zak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 46164-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average psychiatry physician in 2024
16 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
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 MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Matt Zak among 929 psychiatry physician records in Wisconsin
Matt Zak, M.D. is one of 929 psychiatry physician records with a practice address in Wisconsin. 68% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 50% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 47% of these records are
- Record last updated2019 · 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 2084P0800X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 psychiatry physician records list a practice address in De Pere
They are 12 of the 621 NPPES records with a practice address in De Pere, and 929 psychiatry physician records in Wisconsin.
All 929 in Wisconsin → Every provider in De Pere → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Howard Davis, M.D.De Pere, WI 541151679516355
- Julie George-Grosskopf, MDDe Pere, WI 541151568090181
- Carolyn Hendricks, M.D.De Pere, WI 541151952557647
- Mylan Kohler, DODe Pere, WI 541151457521866
- Chris Larson, MDDe Pere, WI 541151972515658
- Timothy Lineberry, M.D.De Pere, WI 541151912984121
- Vazhuvelil Menon, M.D.De Pere, WI 541151558780676
- James Price, MDDe Pere, WI 541151144889205
Common questions
What is Matt Zak, M.D.'s NPI number?
Matt Zak, M.D.'s National Provider Identifier (NPI) is 1275621807, issued on Oct 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matt Zak, M.D. located?
The NPPES record lists a practice address at 3860 Monroe RD, De Pere, WI, 54115. Phone: (920) 496-4700. Providers update this record themselves, so call before visiting.
How can I verify Matt Zak, M.D.'s license?
NPPES lists Wisconsin license number 46164-020, 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 Matt Zak, M.D. prescribe under Medicare Part D?
In 2024, Matt Zak, M.D. had 16 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is Matt Zak, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100. 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.