Arroyo Nephrology Associates

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

A41453 Issued in CA

Legal business name

ARROYO NEPHROLOGY ASSOCIATES

Practice address

301 S Fair Oaks Ave Ste 405
Pasadena, CA 91105-2562

Phone

(626) 794-7075

Fax

(626) 404-7545

NPI assigned

Aug 30, 2011

Organization subpart

No

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Dr. Ashok Sunder Raj, M.D.NPI 1093744070

Title

President

Phone

(626) 794-7075

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Networks

• BSC 65 PLUS INDIVIDUAL MAPDPlans: Blue Shield 65 Plus (HMO) (H0504-015-000, H0504); Blue Shield 65 Plus (HMO) (H0504-039-000, H0504); Blue Shield 65 Plus Plan 2 (HMO) (H0504-021-000, H0504); Blue Shield Inspire (HMO) (H0504-041-000, H0504); Blue Shield 65 Plus (HMO) (H0504-038-000, H0504); Blue Shield Inspire (HMO) (H0504-047-000, H0504); Blue Shield 65 Plus (HMO) (H0504-026-000, H0504); Blue Shield Advantage (HMO) (H0504-050-000, H0504); Blue Shield AdvantageOptimum Plan (HMO) (H5928-004-000, H5928); Blue Shield Inspire (HMO) (H0504-043-000, H0504)…

Practitioners 4

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Ashok Sunder Raj, M.D.

  • Nephrology Physician
  • Pasadena, CA
  • NPI 1093744070
  Medicare reassignment Care Compare group NPD Authorized official
• Ilian Orlando Marquez, M.D.

  • Nephrology Physician
  • Pasadena, CA
  • NPI 1710019906
  Medicare reassignment Care Compare group NPD
• Sheng-Yong Wang, M.D. & PH.D.

  • Nephrology Physician
  • San Jose, CA
  • NPI 1700813318
  NPD (past)
• Yungpo Wang, MD

  • Nephrology Physician
  • Baldwin Park, CA
  • NPI 1639228919
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1314662400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1772755200000",
    "number": "1033490453",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "301 S FAIR OAKS AVE STE 405",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911052562",
            "telephone_number": "626-794-7075",
            "fax_number": "626-404-7545"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "301 S FAIR OAKS AVE STE 405",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911052562",
            "telephone_number": "626-794-7075",
            "fax_number": "626-404-7545"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ARROYO NEPHROLOGY ASSOCIATES",
        "organizational_subpart": "NO",
        "enumeration_date": "2011-08-30",
        "last_updated": "2026-03-06",
        "certification_date": "2026-03-06",
        "status": "A",
        "authorized_official_last_name": "SUNDER RAJ",
        "authorized_official_first_name": "ASHOK",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "626-794-7075",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Nephrology",
            "state": "CA",
            "license": "A41453",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Desiree Arrieta Guevara, RN
• Arrow Non-Emergency Medical Transportation, Inc.
• Arroyo Care Medical Group
• Arroyo Holdings, LLC (Arroyo Diagnostics)
• Arroyo Home Care, Inc.
• Arroyo Physical Therapy
• Arroyo Seco Medical Group
• Arroyo Verde Healthcare LLC (GrandCare Home Health West)
• Carment Dolores Arroyo
• Rebecca Arroyo

• Nephrology Physician in Pasadena, CA
• Providers in Pasadena, CA by specialty
• Nephrology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.