Cindy Sieun An, AGPCNP-BC

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

95025982 Issued in CA

Practice address

100 N State College Blvd Ste H
Fullerton, CA 92831-4236

Phone

(714) 824-6565

Fax

(714) 930-7926

NPI assigned

Aug 10, 2023

Last updated

Oct 5, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Balboa Nephrology Medical Group IncGroup PAC ID 9638164015, 78 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: can75166@direct.acumenmd.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Balboa Nephrology Medical Group, Inc.

  • Nephrology Physician
  • San Diego, CA
  • NPI 1316997505

  Nurse Practitioner

  Medicare reassignment Care Compare group NPD
• Algos Inc., a Medical Corporation

  dba Synovation Medical Group

  • Pain Medicine Physician
  • Pasadena, CA
  • NPI 1497747356
  Medicare reassignment NPD
• Won K Yu MD MPH Inc

  dba Won K Yu, MD, MPH Digestive Diseases

  • Gastroenterology Physician
  • Tustin, CA
  • NPI 1538334289
  Medicare reassignment NPD
• Algos Inc., a Medical Corporation

  dba Synovation Medical Group

  • Pain Medicine Physician
  • Visalia, CA
  • NPI 1245832419
  NPD
• Balboa Nephrology Medical Group,Inc.

  dba San Diego Access and Surgery Center

  • Ambulatory Surgical Clinic/Center
  • San Diego, CA
  • NPI 1598276404
  NPD
• Algos Inc., a Medical Corporation

  dba Synovation Medical Group

  • Pain Medicine Physician
  • Simi Valley, CA
  • NPI 1063890275
  NPD (past)

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

{
    "created_epoch": "1691625600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791158400000",
    "number": "1801579420",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9373 HAZARD WAY STE 200",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921231226",
            "telephone_number": "858-810-8000",
            "fax_number": "858-268-1911"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 N STATE COLLEGE BLVD STE H",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928314236",
            "telephone_number": "714-824-6565",
            "fax_number": "714-930-7926"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AN",
        "first_name": "CINDY",
        "middle_name": "SIEUN",
        "name_prefix": "Miss",
        "credential": "AGPCNP-BC",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2023-08-10",
        "last_updated": "2026-10-05",
        "certification_date": "2026-10-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "95025982",
            "primary": true
        },
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "CA",
            "license": "95025982",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amina J Chaudhry DDS Inc (Classic Smiles Dentistry)
• Amir Reza Aminoshariae, DMD
• Amit Shah D.D.S (Creative Smiles)
• Richard Kenton Amo, D.D.S.
• Joy L. Amundson, NP
• Kenneth An, An
• Ana Gallardo
• Juan C Anaya Jr.
• Andara Marriage and Family Therapy, Inc. (Andara Psychotherapy)
• Chris Andaya

• Nurse Practitioner in Fullerton, CA
• Providers in Fullerton, CA by specialty
• Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.