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ARROYO NEPHROLOGY ASSOCIATES
NPI 1033490453
Internal Medicine - Nephrology in Pasadena, CA

Active since August 30, 2011
301 S FAIR OAKS AVE STE 405, PASADENA, CA 91105(626) 794-7075(626) 404-7545 Get Directions Write a Review

NPPES record last updated: March 6, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Arroyo Nephrology Associates NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ARROYO NEPHROLOGY ASSOCIATES (NPI 1033490453) is a healthcare organization registered as a nephrology in Pasadena, California and active in the NPI registry since August 2011. The organization lists Ashok Sunder Raj, President, as its authorized official.

NPPES Registry Identity

NPI1033490453
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameARROYO NEPHROLOGY ASSOCIATES
Location Address301 S FAIR OAKS AVE STE 405Pasadena, CA 91105-2562
Mailing Address301 S Fair Oaks Ave Ste 405Pasadena, CA 91105-2562 · (626) 794-7075 · Fax (626) 404-7545
Phone(626) 794-7075
Fax(626) 404-7545
Organization SubpartNo
Authorized OfficialAshok Sunder RajPresident · (626) 794-7075
Enumeration DateAugust 30, 2011
Last NPPES UpdateMarch 6, 2026
NPPES CertifiedMarch 6, 2026
✔ NPI 1033490453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · A41453
Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

301 S FAIR OAKS AVE STE 405, Pasadena, CA 91105
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NALINI DEVI MATTAI MD
General Practice
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 792-1912
JUSTIN ALEXANDER CHEN MD
Internal Medicine (Nephrology)
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 352-0010
ELANA L SHELDON MD
Internal Medicine
301 S FAIR OAKS AVE STE 405, PASADENA
PASADENA, CA 91105
Los Angeles County (626) 792-1912
JENNIFER MOANI KAHAU-SEGOVIA FNP
Nurse Practitioner
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 440-7325
DOLORES M FIGUEROA M.D.
Internal Medicine
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 440-7325
DR. ASHOK SUNDER RAJ M.D.
Internal Medicine (Nephrology)
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 794-7075
DR. ILIAN ORLANDO MARQUEZ M.D.
Internal Medicine (Nephrology)
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 794-7075

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Arroyo Nephrology Associates's NPI number?

The NPI number for Arroyo Nephrology Associates is 1033490453. It was assigned to this organization in the NPPES registry on August 30, 2011.

Where is Arroyo Nephrology Associates located?

Arroyo Nephrology Associates is located at 301 S Fair Oaks Ave Ste 405, Pasadena, CA 91105. The listed phone number is (626) 794-7075.

What is Arroyo Nephrology Associates's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

When was this NPI record last updated?

The NPPES record for Arroyo Nephrology Associates was last updated on March 6, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.