Sarah Kay, PA

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

150 Valpreda Rd
San Marcos, CA 92069-2973

Phone

(760) 736-6767

NPI assigned

Oct 9, 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

Other names 1

• Sarah Lyon Former name

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, 2019

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

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.

• Graybill Medical Group Inc

  • Family Medicine Physician
  • Escondido, CA
  • NPI 1891729745
  Medicare reassignment

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

{
    "created_epoch": "1539043200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784505600000",
    "number": "1538634209",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "150 VALPREDA RD",
            "city": "SAN MARCOS",
            "state": "CA",
            "postal_code": "920692973",
            "telephone_number": "760-736-6767"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "150 VALPREDA RD",
            "city": "SAN MARCOS",
            "state": "CA",
            "postal_code": "920692973",
            "telephone_number": "760-736-6767"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2575 Yorba Linda Blvd",
            "address_purpose": "LOCATION",
            "city": "Fullerton",
            "state": "CA",
            "postal_code": "928311615",
            "country_code": "US",
            "telephone_number": "714-449-7400",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "225 E 2nd Ave",
            "address_purpose": "LOCATION",
            "city": "Escondido",
            "state": "CA",
            "postal_code": "920254212",
            "country_code": "US",
            "telephone_number": "760-291-6700",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KAY",
        "first_name": "SARAH",
        "credential": "PA",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2018-10-09",
        "last_updated": "2026-07-20",
        "certification_date": "2026-07-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SARAH",
            "last_name": "LYON",
            "credential": "PA",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Karen Peschke, O.D., a Professional Corporation of Optometry (Family Eye Health Optometry Center)
• Serge Charles Kaska, M.D.
• Navdeep Kaur
• Parminder Kaur, DDS
• Bree L Kay, PT, DPT
• Kayal Medical Group Inc. (Rheumatology and Arthritis Medical Clinic)
• Anas Kayal, MD
• Kaydee Welchons
• Radmila Kazanegra, M.D.
• Kenneth Keane, CADC-II

• Physician Assistant in San Marcos, CA
• Providers in San Marcos, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 20, 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.