Matthew Armstrong, APNP
NPI 1326121898 · Nurse Practitioner · Appleton, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Armstrong, APNP is a Nurse Practitioner provider in Appleton, WI (NPI 1326121898).
Provider details
- NPI number
- 1326121898
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Male
- Sole proprietor
- No
- License
- 2420-083 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
4 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 (3)
- 1506 S Oneida St Ste 500Appleton, WI 54915-1305Phone: (920) 969-9700Fax: (920) 969-7979
- 555 Redbird CirDe Pere, WI 54115-7977Phone: (920) 969-7970Fax: (920) 969-7979
- 9000 W Wisconsin AveMilwaukee, WI 53226-4874Phone: (414) 266-3794Fax: (414) 266-1752
Registry dates
- Enumerated
- 2006-10-20
- Last updated
- 2023-07-10
- Certified
- 2023-07-10
Frequently asked questions
- What is Matthew Armstrong's NPI number?
- Matthew Armstrong's National Provider Identifier (NPI) is 1326121898, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Armstrong's specialty?
- Matthew Armstrong is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Armstrong located?
- Matthew Armstrong's practice location on file with NPPES is 2575 E Evergreen Drive, Appleton, WI 54913-8904.
- What is Matthew Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Matthew Armstrong is (920) 969-5353.
- Does Matthew Armstrong accept Medicare?
- Matthew Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Armstrong's NPI active?
- Yes — Matthew Armstrong's NPI (1326121898) is active in the NPPES registry as of the last update on 2023-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.