David Cook, M.S, M.DIV.
NPI 1831249820 · Marriage & Family Therapist · Crystal Lake, IL
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Cook, M.S, M.DIV. is a Marriage & Family Therapist provider in Crystal Lake, IL (NPI 1831249820).
Provider details
- NPI number
- 1831249820
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.S, M.DIV.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 166-000196 (IL)
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
100% 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
- 2007-01-11
- Last updated
- 2016-08-26
Frequently asked questions
- What is David Cook's NPI number?
- David Cook's National Provider Identifier (NPI) is 1831249820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Cook's specialty?
- David Cook is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is David Cook located?
- David Cook's practice location on file with NPPES is 600 Dakota St, Crystal Lake, IL 60012-3742.
- What is David Cook's phone number?
- The practice phone number listed in the NPPES registry for David Cook is (815) 356-9683.
- Does David Cook accept Medicare?
- David Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Cook's NPI active?
- Yes — David Cook's NPI (1831249820) is active in the NPPES registry as of the last update on 2016-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.