Arroyo Nephrology Associates
Arroyo Nephrology Associates is a healthcare organization registered as Nephrology Physician in Pasadena, CA, holding Type 2 (organization) NPI 1033490453 since 2011. The authorized official on file is Ashok Sunder Raj, President.
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| NPI | 1033490453 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Arroyo Nephrology Associates |
| Practice address | 301 S FAIR OAKS AVE STE 405, Pasadena, CA, 91105 |
| Phone | 6267947075 |
| Fax | 6264047545 |
| Enumeration date | 2011-08-30 |
| Last updated in NPPES | 2026-03-06 |
Authorized official
| Name | Ashok Sunder Raj |
|---|---|
| Title | President |
| Phone | 6267947075 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RN0300X | Nephrology Physician | Primary | A41453 | CA |
Copy-ready billing details
Provider: Arroyo Nephrology Associates NPI: 1033490453 Taxonomy: 207RN0300X (Nephrology Physician) Address: 301 S FAIR OAKS AVE STE 405, Pasadena, CA, 91105
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1093744070 | Ashok Sunder Raj | Individual | Nephrology Physician | Pasadena, CA |
| 1790708915 | Elana Sheldon | Individual | Internal Medicine Physician | Pasadena, CA |
| 1033287701 | Dolores Figueroa | Individual | Internal Medicine Physician | Pasadena, CA |
| 1710019906 | Ilian Marquez | Individual | Nephrology Physician | Pasadena, CA |
| 1982803052 | Nalini Mattai | Individual | General Practice Physician | Pasadena, CA |
| 1447526066 | Justin Chen | Individual | Nephrology Physician | Pasadena, CA |
| 1629608906 | Jennifer Kahau-Segovia | Individual | Nurse Practitioner | Pasadena, CA |
Verify this record
Cross-check NPI 1033490453 against the authoritative CMS record: view Arroyo Nephrology Associates 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
Who is the authorized official for Arroyo Nephrology Associates?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2026-03-06.