Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Daniel Boyll, BCBA
Behavior Analyst in Castle Rock, CO · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528936846
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Registry record
Entity type Individual (Type 1)
Name Daniel Boyll
Credential BCBA
Sex Male
Practice address 831 S Perry St, Castle Rock, CO, 80104
Phone (719) 309-2684
Enumeration date Oct 28, 2025
Last updated in NPPES Oct 28, 2025
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-25-85284 (CO) Primary
106S00000X Behavior Technician Behavioral Health & Social Service Providers · License RBT-24-340842 (CO) Secondary
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.
Frequently asked questions
What is the NPI number for Daniel Boyll?
The National Provider Identifier (NPI) for Daniel Boyll is 1528936846, a Type 1 (individual) record in the CMS NPPES registry.
Where does Daniel Boyll practice?
The practice location on file with NPPES is in Castle Rock, CO. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Skye Embrey Professional Counselor · Castle Rock, CO NPI 1528162708 Drew Werner Family Medicine Physician · Castle Rock, CO NPI 1942373071 Sean Magill Clinical Social Worker · Castle Rock, CO NPI 1700911187 Judy Jones Mental Health Counselor · Castle Rock, CO NPI 1457471096 Ruby Martinez Psychiatric/Mental Health Clinical Nurse Specialist · Castle Rock, CO NPI 1164639506 Steven Yamazaki Family Medicine Physician · Castle Rock, CO NPI 1861757890 Portercare Adventist Health System Family Medicine Physician · Castle Rock, CO NPI 1376897041 Elizabeth Good Wyknenko Marriage & Family Therapist · Castle Rock, CO NPI 1023452307
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-28.