Katy Alexy, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

56211 Issued in CA

Practice address

3901 Lone Tree Way
Antioch, CA 94509-6200

Phone

(925) 779-7200

NPI assigned

Oct 18, 2018

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

Merit-based Incentive Payment System (MIPS)

Final score

96.69 of 100Reported as group

Quality

90

Improvement activities

40

Cost

78.43

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: kjohnston708635@hisp.ehr.sutterhealth.org

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.

• Carbon Health Medical Group of California PC

  • Urgent Care Clinic/Center
  • Berkeley, CA
  • NPI 1417294232
  Medicare reassignment
• Cep America - California

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1023063542
  Medicare reassignment
• Cep America - California

  • Emergency Medicine Physician
  • French Camp, CA
  • NPI 1467863290
  NPD

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

{
    "created_epoch": "1539820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779321600000",
    "number": "1629544556",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4356 OAKDALE PL",
            "city": "PITTSBURG",
            "state": "CA",
            "postal_code": "945656256"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3901 LONE TREE WAY",
            "city": "ANTIOCH",
            "state": "CA",
            "postal_code": "945096200",
            "telephone_number": "925-779-7200"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALEXY",
        "first_name": "KATY",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2018-10-18",
        "last_updated": "2026-05-21",
        "certification_date": "2026-05-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "56211",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Makda Alemayehu
• Abnet Amsalework Alemu, MD
• Alex a. Aslan, MD, Inc
• Alexander Lim DDS Inc
• Shamika Veronica Alexander
• Ashley Janel Alfaro, RN
• Ali Shirani DDS Apc
• Nazish Nawaz Ali, M.D.
• Alicia Allen
• Ian Burley Gordon Allen

• Physician Assistant in Antioch, CA
• Providers in Antioch, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 21, 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.