Individual provider Active NPI

Hayat El Yousfi

  • Pharmacist
  • Stockton, CA
National Provider Identifier
1033683388
Registry record updated Jul 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
PharmacistTaxonomy code 183500000X
License
80157 Issued in CA
Practice address
4555 N Pershing Ave Ste 7
Stockton, CA 95207-6739
Phone
(209) 565-6304
Fax
(209) 565-6305
NPI assigned
Jan 18, 2019
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 24, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Pharmacist 183500000X 80157 CA Primary

Addresses

Primary practice location

4555 N Pershing Ave Ste 7
Stockton, CA 95207-6739

Mailing address

4555 N Pershing Ave Ste 1426
Stockton, CA 95207-6740
Phone (209) 565-6304

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Precision Drugs LLC Current Accepting new patients
Precision Drugs LLC Current Accepting new patients

Locations

4555 N Pershing Ave
Ste 7
Stockton, CA 95207
Phone (209) 888-2099

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1547769600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784851200000",
    "number": "1033683388",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4555 N PERSHING AVE STE 1426",
            "city": "STOCKTON",
            "state": "CA",
            "postal_code": "952076740",
            "telephone_number": "209-565-6304",
            "fax_number": "209-565-6305"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4555 N PERSHING AVE STE 7",
            "city": "STOCKTON",
            "state": "CA",
            "postal_code": "952076739",
            "telephone_number": "209-565-6304",
            "fax_number": "209-565-6305"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "EL YOUSFI",
        "first_name": "HAYAT",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2019-01-18",
        "last_updated": "2026-07-24",
        "certification_date": "2026-07-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "183500000X",
            "taxonomy_group": "",
            "desc": "Pharmacist",
            "state": "CA",
            "license": "80157",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Stockton, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.