Matthew Leifker, MS, CADC
NPI 1023430394 · Addiction (Substance Use Disorder) Counselor · Dubuque, IA
Matthew Leifker, MS, CADC is a Addiction (Substance Use Disorder) Counselor provider in Dubuque, IA (NPI 1023430394).
Provider details
- NPI number
- 1023430394
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- MS, CADC
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2014-01-06
- Last updated
- 2014-01-06
Frequently asked questions
- What is Matthew Leifker's NPI number?
- Matthew Leifker's National Provider Identifier (NPI) is 1023430394, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Leifker's specialty?
- Matthew Leifker is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Matthew Leifker located?
- Matthew Leifker's practice location on file with NPPES is 799 Main St Ste 110, Dubuque, IA 52001-6825.
- What is Matthew Leifker's phone number?
- The practice phone number listed in the NPPES registry for Matthew Leifker is (563) 582-3784.
- Is Matthew Leifker's NPI active?
- Yes — Matthew Leifker's NPI (1023430394) is active in the NPPES registry as of the last update on 2014-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.