Mr. Calvert Sims
Mr. Calvert Sims is a Addiction (Substance Use Disorder) Counselor provider (Counselor) practicing in Sun Valley, CA, registered in the NPPES registry with NPI 1659525319 since 2008.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1659525319 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. Calvert Sims |
| Sex | Male |
| Practice address | Sun Valley, CA, 91352 |
| Phone | 8187685525 |
| Fax | 8187685530 |
| Enumeration date | 2008-11-07 |
| Last updated in NPPES | 2016-05-02 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YA0400X | Addiction (Substance Use Disorder) Counselor | Primary | — | — |
Copy-ready billing details
Provider: Calvert Sims NPI: 1659525319 Taxonomy: 101YA0400X (Addiction (Substance Use Disorder) Counselor) Address: Sun Valley, CA, 91352
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1316024565 | Verdugo Medical Group, Inc. | Organization | Obstetrics & Gynecology Physician | Sun Valley, CA |
| 1538286778 | Narcotic Addiction Treatment Agency, Inc. | Organization | Methadone Clinic | Sun Valley, CA |
| 1730308867 | Narcotic Addiction Treatment Agency, Inc. | Organization | Community/Behavioral Health Agency | Sun Valley, CA |
| 1467671503 | Narcotic Addiction Treatment Agency, Inc | Organization | Community/Behavioral Health Agency | Sun Valley, CA |
| 1013107705 | Lisa Few | Individual | Physician Assistant | Sun Valley, CA |
| 1598946535 | Narcotic Addiction Treatment Agency, Inc. | Organization | Community/Behavioral Health Agency | Sun Valley, CA |
| 1538317052 | Lynn Treu | Individual | Addiction (Substance Use Disorder) Counselor | Sun Valley, CA |
| 1144463795 | Dennis Martinez | Individual | Addiction (Substance Use Disorder) Counselor | Sun Valley, CA |
Verify this record
Cross-check NPI 1659525319 against the authoritative CMS record: view Mr. Calvert Sims 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 2016-05-02.