Tammy Tuyet Nguyen, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

59081 Issued in CA

Practice address

3460 Katella Ave
Los Alamitos, CA 90720-2334

Phone

(562) 594-6599

Fax

(562) 594-7116

NPI assigned

Oct 31, 2019

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

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

Physician Assistant

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Healthcare Partners Affiliates Medical GroupGroup PAC ID 7315842002, 775 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348
• Memorialcare Long Beach Medical Center Hospital, Long Beach, CA, CCN 050485
• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: tammy.nguyen.p33@direct.monarchhealthcare.nextgenshare.com
• Direct secure messaging: tnguyen195440@westdirect.optum.com

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

• Healthcare Partners Affiliates Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593
  Medicare reassignment Care Compare group
• Algos Inc., a Medical Corporation

  • Pain Medicine Physician
  • Pasadena, CA
  • NPI 1497747356
  Medicare reassignment
• Centers for Family Medicine GP

  • Family Medicine Physician
  • Los Alamitos, CA
  • NPI 1467598243
  Medicare reassignment
• Algos Inc., a Medical Corporation

  • Pain Medicine Physician
  • Visalia, CA
  • NPI 1245832419
  NPD
• Algos Inc., a Medical Corporation

  • Pain Medicine Physician
  • Azusa, CA
  • NPI 1417039926
  NPD
• Healthcare Partners Affiliates Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Algos Inc., a Medical Corporation

  • Pain Medicine Physician
  • Simi Valley, CA
  • NPI 1063890275
  NPD (past)
• Memorial Medical Group Inc

  • Durable Medical Equipment & Medical Supplies
  • Phoenix, AZ
  • NPI 1255523643
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Hoag Memorial Hospital Presbyterian

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1518951300
  Care Compare affiliation
• Long Beach Memorial Medical

  • General Acute Care Hospital
  • Long Beach, CA
  • NPI 1962442012
  Care Compare affiliation
• University of California Irvine

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1572480000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763942400000",
    "number": "1326682428",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3460 KATELLA AVE",
            "city": "LOS ALAMITOS",
            "state": "CA",
            "postal_code": "907202334",
            "telephone_number": "562-594-6599",
            "fax_number": "562-594-7116"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1125 E 17th St Ste N452",
            "address_purpose": "LOCATION",
            "city": "Santa Ana",
            "state": "CA",
            "postal_code": "927012270",
            "country_code": "US",
            "telephone_number": "714-597-7214",
            "fax_number": "714-727-3290",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "TAMMY",
        "middle_name": "TUYET",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2019-10-31",
        "last_updated": "2025-11-24",
        "certification_date": "2025-11-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "59081",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Denny Nguyen
• Jennie Nguyen
• Kim Thien Nguyen, PHARM.D
• Ly Mai Nguyen, MS
• Phuonghong Thi Nguyen
• Thai-Van Xuan Nguyen, M.D.
• Thi Thi Nguyen
• Thomas T. Nguyen, M.D.
• Thuong-Phuong Van Arvid Nguyen, M.D.
• Young Dai-Duong Nguyen, MSW, LCSW

• Physician Assistant in Los Alamitos, CA
• Providers in Los Alamitos, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 24, 2025; 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.