Mr. Dan Patrick Mclellan, CCC-SLP
Mr. Dan Patrick Mclellan is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Boulder, CO, registered in the NPPES registry with NPI 1821141896 since 2007. Practices at Dan P. Mclellan Ltd (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1821141896 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. Dan Patrick Mclellan |
| Credential | CCC-SLP |
| Sex | Male |
| Practice address | Boulder, CO, 80301 |
| Phone | 3038175055 |
| Fax | 3035305285 |
| Enumeration date | 2007-01-20 |
| Last updated in NPPES | 2007-07-09 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 235Z00000X | Speech-Language Pathologist | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 05322839 | Medicaid | CO | — |
Copy-ready billing details
Provider: Dan Mclellan, CCC-SLP NPI: 1821141896 Taxonomy: 235Z00000X (Speech-Language Pathologist) Address: Boulder, CO, 80301
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1013373729 | Chris Rowinski | Individual | Speech-Language Pathologist | Boulder, CO |
| 1437685286 | Meghan Winget | Individual | Speech-Language Pathologist | Boulder, CO |
| 1346750122 | Amanda Betzen | Individual | Pediatric Occupational Therapist | Boulder, CO |
| 1366947665 | Patricia Wade | Individual | Speech-Language Pathologist | Boulder, CO |
| 1639659451 | Michael Lehnerz | Individual | Pediatric Occupational Therapist | Boulder, CO |
| 1568938959 | Jules Maxwell | Individual | Speech-Language Pathologist | Boulder, CO |
| 1659911725 | Emma Duffy | Individual | Speech-Language Pathologist | Boulder, CO |
| 1124654546 | Maureen Russ | Individual | Speech-Language Pathologist | Boulder, CO |
Verify this record
Cross-check NPI 1821141896 against the authoritative CMS record: view Mr. Dan Patrick Mclellan 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-09.