Phillip Horner, LCSW
Phillip Horner, LCSW is a provider specialising in Clinical Social Worker in Boulder, CO, registered under NPI 1003285719.
Getting there
Here is what surrounds this office in Boulder, based on OpenStreetMap data collected Sep 16, 2026. Parking is available about 426 ft away. The nearest transit stop is 0.37 mi away, served by Canyon Blvd & 3rd St.
Getting here and what is nearby
Parking 80 ft ~1 min
Parking 255 ft ~1 min
Hotel Foot of the Mountain Motel 418 ft ~2 min
Parking 426 ft ~2 min
Transit Canyon Blvd & Pearl St 0.21 mi ~5 min
Transit Pearl St & 3rd St 0.33 mi ~7 min
Transit Canyon Blvd & 3rd St 0.37 mi ~8 min
Restaurant Flagstaff House 0.40 mi ~8 min
1138 Flagstaff Road, Boulder 80302
Su-Fr 18:00-22:00, Sa 17:00-22:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| CSW.09923711 | CO | Clinical Social Worker primary |
This provider holds licence CSW.09923711 issued in CO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Social Worker
- PAC ID
- 5698047595
- Enrollment ID
- I20230915002092
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Social Worker. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003285719 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 23, 2015 |
| Last updated | May 5, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | LCSW |
| Practice address |
100 ARAPAHOE AVE STE 9 Boulder, CO 80302 (720) 316-7774 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 8 | 5 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 8 | 1 | 7 | 2 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.