Individual provider Active NPI

Annalyn Ynostroza, PA-C

  • Physician Assistant
  • Seaside, CA
National Provider Identifier
1457188310
Registry record updated Jun 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
68210 Issued in CA
Practice address
1513 Fremont Blvd # E1
Seaside, CA 93955-4319
Phone
(831) 242-8645
NPI assigned
Sep 16, 2024
Last updated
Jun 23, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 23, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 68210 CA Primary

Addresses

Primary practice location

1513 Fremont Blvd # E1
Seaside, CA 93955-4319

Mailing address

100 Wilson Rd Ste 100
Monterey, CA 93940-7885

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, CA2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20250116001504 DC Practitioner - Physician Assistant 0749718856 Reassigns benefits to 3 organizations
I20260623001185 CA Practitioner - Physician Assistant 0749718856 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2024
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Doctors on Duty Medical Group, IncGroup PAC ID 2466366703, 64 clinicians

Practice addresses (Care Compare)

1513 Fremont Blvd
E1
Seaside, CA 93955-4319
Phone (831) 899-1910

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
68210CAMDRecreation Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
Emergency Medicine Associates P.a., P.C. CurrentSince Aug 1, 2025 Accepting new patients
Cep America LLC CurrentSince Sep 14, 2025 Accepting new patients
Cep America LLC CurrentSince Sep 14, 2025 Accepting new patients
Emergency Medicine Associates P.a., P.C. CurrentSince Aug 1, 2025 Accepting new patients

Locations

2100 Powell St
Ste 400
Emeryville, CA 94608
Phone (510) 350-2638

1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 900-3125

2041 Georgia Ave NW
Washington, DC 20060
Phone (202) 865-3785

1701 N George Mason Dr
Arlington, VA 22205
Phone (703) 558-5000

Interoperability endpoints

  • Direct secure messaging: aynostroza1311839@direct.umm.edu

Organizations & group practices 8

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.

Hospital & facility affiliations 1

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

NPI Registry JSON

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

{
    "created_epoch": "1726444800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782172800000",
    "number": "1457188310",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 WILSON RD STE 100",
            "city": "MONTEREY",
            "state": "CA",
            "postal_code": "939407885"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1513 FREMONT BLVD # E1",
            "city": "SEASIDE",
            "state": "CA",
            "postal_code": "939554319",
            "telephone_number": "831-242-8645"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YNOSTROZA",
        "first_name": "ANNALYN",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-09-16",
        "last_updated": "2026-06-23",
        "certification_date": "2026-06-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "68210",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seaside, CA

Sources for this page

Verify at the official NPI Registry.