Ashton Christian, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

A157097 Issued in CA

Practice address

27799 Medical Center Rd Ste 440
Mission Viejo, CA 92691-6400

Phone

(493) 641-0079

Fax

(949) 364-0317

NPI assigned

Mar 29, 2017

Sex

Male

Sole proprietor

No

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

General Surgery

Education

Other, 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

• Providence Mission Hospital Hospital, Mission Viejo, CA, CCN 050567

Merit-based Incentive Payment System (MIPS)

Final score

87.08 of 100Reported as group

Quality

62.67

Promoting interoperability

100

Improvement activities

40

Cost

85.6

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

• Direct secure messaging: ashton.christian.1@12518.direct.athenahealth.com
• FHIR API: https://api.platform.athenahealth.com/12518/brand/2/csg/1/fhir/r4

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.

• South Orange County Surgical Medical Group, Inc.

  • Surgery Physician
  • Laguna Hills, CA
  • NPI 1407860844
  Medicare reassignment Care Compare group NPD

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

• Mission Hospital Regional Medical Center

  • General Acute Care Hospital
  • Mission Viejo, CA
  • NPI 1912108002
  Care Compare affiliation
• Mission Hospital Regional Medical Center

  • General Acute Care Hospital
  • Mission Viejo, CA
  • NPI 1992752315
  Care Compare affiliation

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

{
    "created_epoch": "1490745600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770595200000",
    "number": "1699207704",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "27799 MEDICAL CENTER RD STE 440",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926916400",
            "telephone_number": "949-364-1007",
            "fax_number": "949-364-0317"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "27799 MEDICAL CENTER RD STE 440",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926916400",
            "telephone_number": "493-641-0079",
            "fax_number": "949-364-0317"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHRISTIAN",
        "first_name": "ASHTON",
        "name_prefix": "Prof.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-03-29",
        "last_updated": "2026-02-09",
        "certification_date": "2026-02-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "A157097",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ethan Hyung Choi
• Jae Young Choi, MD
• Kayla Choi
• Jessica Chou
• William W Chou, MD
• Jeremy John Christie, FNP-C
• Christina N Jenkins MD
• Christopher B Lin, Inc
• Christopher Care Choosing Life, LLC
• Christopher Lin M.D. Inc.

• Surgery Physician in Mission Viejo, CA
• Providers in Mission Viejo, CA by specialty
• Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 9, 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.