Mark Weiss, LCSW RN CADC
NPI 1780779900 · Mental Health Counselor · Arlington Heights, IL
Mark Weiss, LCSW RN CADC is a Mental Health Counselor provider in Arlington Heights, IL (NPI 1780779900).
Provider details
- NPI number
- 1780779900
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LCSW RN 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
19 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
- 2006-10-04
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Weiss's NPI number?
- Mark Weiss's National Provider Identifier (NPI) is 1780779900, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Weiss's specialty?
- Mark Weiss is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Weiss located?
- Mark Weiss's practice location on file with NPPES is 3285 N Arlington Heights Road, Arlington Heights, IL 60004.
- What is Mark Weiss's phone number?
- The practice phone number listed in the NPPES registry for Mark Weiss is (847) 577-1501.
- Is Mark Weiss's NPI active?
- Yes — Mark Weiss's NPI (1780779900) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.