NPI Portal NPI Lookup & Verification

Jennifer Sleek, MA

Jennifer Sleek is a Professional Counselor provider (Counselor) practicing in Boulder, CO, registered in the NPPES registry with NPI 1124318621 since 2011. Practices at La Luna Center, LLC (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1124318621
Entity type Individual (Type 1)
Name Jennifer Sleek
Credential MA
Sex Female
Practice address Boulder, CO, 80301
Phone 7206412737
Fax 3032007098
Enumeration date 2011-04-18
Last updated in NPPES 2011-04-18

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
101YP2500X Professional Counselor Primary
Copy-ready billing details
Provider: Jennifer Sleek, MA
NPI: 1124318621
Taxonomy: 101YP2500X (Professional Counselor)
Address: Boulder, CO, 80301

Other providers at this practice address

NPI Name Type Specialty Location
1679690689 Malia Sperry Individual Mental Health Counselor Boulder, CO
1215054218 La Luna Center, LLC Organization Group Psychotherapy Psychologist Boulder, CO
1881892495 Carolyn Aibel Individual Psychologist Boulder, CO
1861665804 Marla Guzzo Individual Mental Health Counselor Boulder, CO
1174813661 Michelle Fields Individual Professional Counselor Boulder, CO
1043599921 Amy Winkelman Individual Professional Counselor Boulder, CO
1659653210 Sarah Hewes Individual Clinical Social Worker Boulder, CO
1760742209 Stephanie Pollock Individual Professional Counselor Boulder, CO

Verify this record

Cross-check NPI 1124318621 against the authoritative CMS record: view Jennifer Sleek on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Where does Jennifer Sleek practice?
The practice location on file with NPPES is in Boulder, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jennifer Sleek?
The National Provider Identifier (NPI) for Jennifer Sleek is 1124318621, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-04-18.