Katherine Stern, M.D.

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

A158145 Issued in CA

Practice address

24411 Health Center Dr Ste 350
Laguna Hills, CA 92653-3687

Phone

(949) 457-7900

Fax

(949) 588-8719

NPI assigned

Mar 27, 2017

Last updated

Oct 21, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Colorectal Surgery (Proctology)Also: General Surgery

Education

Irvine California College of Medicine, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

South Orange County Surgical Medical Group IncGroup PAC ID 8426945338, 22 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorialcare Saddleback Medical Center Hospital, Laguna Hills, CA, CCN 050603

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/12518/brand/2/csg/1/fhir/r4
• Direct secure messaging: katherine.stern.1@12518.direct.athenahealth.com
• Direct secure messaging: kstern335858@direct.memorialcare.org

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.

• South Orange County Surgical Medical Group, Inc.

  • Surgery Physician
  • Laguna Hills, CA
  • NPI 1407860844

  Multi-Specialty

  Medicare reassignment Care Compare group NPD
• Oc Trauma Inc

  • Trauma Surgery Physician
  • Mission Viejo, CA
  • NPI 1720516628

  Multi-Specialty

  NPD (past)

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

• Saddleback Memorial Medical Center

  • General Acute Care Hospital
  • Laguna Hills, CA
  • NPI 1275576381
  Care Compare affiliation

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

{
    "created_epoch": "1490572800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761004800000",
    "number": "1376074740",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "24411 HEALTH CENTER DR STE 350",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533687",
            "telephone_number": "949-457-7900",
            "fax_number": "949-588-8719"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "24411 HEALTH CENTER DR STE 350",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533687",
            "telephone_number": "949-457-7900",
            "fax_number": "949-588-8719"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STERN",
        "first_name": "KATHERINE",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2017-03-27",
        "last_updated": "2025-10-21",
        "certification_date": "2025-10-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "A158145",
            "primary": true
        },
        {
            "code": "208C00000X",
            "taxonomy_group": "",
            "desc": "Colon & Rectal Surgery",
            "state": "CA",
            "license": "A158145",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Stephen M Pumphrey Licensed Clinical Social Workers Inc
• Corey James Stephens
• Ryan Ray Stephens
• Jon Sterkel
• Benjamin William Stern
• Daniel Ross Sternfeld, MD
• Steve J Costales Chiropractic Inc (Chiropractic Sports Medicine)
• Cierra Cherie Stivers, CADC I
• Macy N Stockwell
• Stone Ridge Recovery Inc

• Surgery Physician in Laguna Hills, CA
• Providers in Laguna Hills, CA by specialty
• Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 21, 2025; 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.