Individual provider Active NPI

Stephen Yoon, M.D.

  • Internal Medicine Physician
  • Fullerton, CA
National Provider Identifier
1851327100
Registry record updated May 13, 2015
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
A71645 Issued in CA
Practice address
101 E Valencia Mesa Dr
Fullerton, CA 92835-3809
Phone
(714) 992-3000
NPI assigned
Jun 25, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 13, 2015

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X A71645 CA Primary

Addresses

Primary practice location

101 E Valencia Mesa Dr
Fullerton, CA 92835-3809

Mailing address

101 E Valencia Mesa Dr
Fullerton, CA 92835-3809
Phone (714) 992-3000

Medicare participation

Medicare enrollment files
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: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20071107000806 CA Practitioner - Internal MedicinePractitioner - Hospice/Palliative Care 3971690942 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Hospice/Palliative Care
Education
Rutgers New Jersey Medical School, 1998
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians

Practice addresses (Care Compare)

100 E Valencia Mesa Dr
Suite 105
Fullerton, CA 92835-3816
Phone (714) 871-3006

1514 Valley Vista Dr
Diamond Bar, CA 91765-3929
Phone (909) 860-1144

1950 Sunny Crest Dr
Suite 2900
Fullerton, CA 92835-3641
Phone (714) 992-5350

Hospital & facility affiliations

  • Providence St. Jude Medical Center Hospital, Fullerton, CA, CCN 050168

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
71645CAMDSocial Worker
A71645CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Providence Medical Foundation Current Accepting new patients
Providence Medical Foundation CurrentSince Dec 12, 2010 Accepting new patients
Providence Medical Foundation CurrentSince Dec 12, 2010 Accepting new patients
Providence Medical Foundation Current Accepting new patients
St Jude Hospital Inc Past Accepting new patients

Locations

1514 Valley Vista Dr
Diamond Bar, CA 91765
Phone (909) 560-1144

279 Imperial Hwy
Ste 730
Fullerton, CA 92835
Phone (714) 449-4841

101 E Valencia Mesa Dr
Fullerton, CA 92835
Phone (714) 446-7505

1950 Sunny Crest Dr
Ste 2900
Fullerton, CA 92835

100 E Valencia Mesa Dr
Ste 105
Fullerton, CA 92835
Phone (714) 446-5200

Ownership & related parties

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
The Pavilion at Sunny HillsFullerton, CA, CCN 555733 Skilled nursing facility Operational/Managerial Control
Adp of the SNF
May 20, 2025
May 20, 2025

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

Organizations & group practices 5

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.

Hospital & facility affiliations 2

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": "1151193600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1431475200000",
    "number": "1851327100",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "101 E VALENCIA MESA DR",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928353809",
            "telephone_number": "714-992-3000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 E VALENCIA MESA DR",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928353809",
            "telephone_number": "714-992-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YOON",
        "first_name": "STEPHEN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-25",
        "last_updated": "2015-05-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A71645",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fullerton, CA

Sources for this page

Verify at the official NPI Registry.