Matt Zak, M.D.
NPI 1275621807 · Psychiatry Physician · De Pere, WI
Matt Zak, M.D. is a Psychiatry Physician provider in De Pere, WI (NPI 1275621807).
Provider details
- NPI number
- 1275621807
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 50191 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1401 E 1st StDuluth, MN 55805-2407Phone: (218) 728-4491Fax: (218) 728-4404
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2019-11-01
Frequently asked questions
- What is Matt Zak's NPI number?
- Matt Zak's National Provider Identifier (NPI) is 1275621807, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matt Zak's specialty?
- Matt Zak is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Matt Zak located?
- Matt Zak's practice location on file with NPPES is 3860 Monroe Rd, De Pere, WI 54115-8399.
- What is Matt Zak's phone number?
- The practice phone number listed in the NPPES registry for Matt Zak is (920) 496-4700.
- Is Matt Zak's NPI active?
- Yes — Matt Zak's NPI (1275621807) is active in the NPPES registry as of the last update on 2019-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.