NPIMap

Individual provider Active NPI

Christopher C. Ninh, MD

  • Orthopaedic Surgery Physician
  • Irvine, CA
National Provider Identifier
1700096393
Registry record updated Feb 19, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
A98528 Issued in CA
Practice address
17305 Von Karman Ave Ste 100
Irvine, CA 92614-0903
Phone
(714) 432-9990
Fax
(714) 432-9988
NPI assigned
May 23, 2007
Last updated
Feb 19, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 19, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X A98528 CA Primary

Addresses

Primary practice location

17305 Von Karman Ave Ste 100
Irvine, CA 92614-0903

Mailing address

17305 Von Karman Ave Ste 100
Irvine, CA 92614-0903
Phone (714) 432-9990

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20080119000140 CA Practitioner - Orthopedic Surgery 9436230133 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
University of California, Irvine, California College of Medicine, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Christopher C Ninh MD, IncGroup PAC ID 6800954736, 5 clinicians

Practice addresses (Care Compare)

15191 Beach Blvd
Westminster, CA 92683-6203
Phone (714) 432-9990

17305 Von Karman Ave
Suite 100
Irvine, CA 92614-0903
Phone (714) 432-9990

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
75 of 100Reported as individual

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement1-10
Knee replacement53
Lower limb (leg) arthroscopy (minimally invasive joint repair)100
Upper limb (arm) arthroscopy (minimally invasive joint repair)102
Varicose vein removal19

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A98528CAMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Surgitek ASC LLC CurrentSince Aug 18, 2025 Accepting new patients
Christopher C. Ninh MD, Inc. Orthopaedic Surgery CurrentSince Aug 1, 2008 Accepting new patients
Caduceus Physicians Medical Group Orthopaedic Surgery PastSince Jan 15, 2016 Accepting new patients
St. Joseph Health Northern California, LLC Past Accepting new patients
Orange Coast Memorial Medical Center Past Accepting new patients
Orange County Global Medical Center, Inc Past Accepting new patients
Long Beach Memorial Medical Past Accepting new patients
Alta Newport Hospital, LLC Past Accepting new patients
Chapman Medical Center Inc Past Accepting new patients
Anaheim Memorial Medical Center Past Accepting new patients
St. Joseph Hospital Past Accepting new patients

Locations

11190 Warner Ave
Ste 306
Fountain Vly, CA 92708
Phone (714) 432-9990

17305 Von Karman Ave
Ste 100
Irvine, CA 92614
Phone (714) 432-9990

113 Waterworks Way
Ste 240
Irvine, CA 92618
Phone (949) 340-9622

6000 San Vicente Blvd
Ste 3
Los Angeles, CA 90036

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Organizations & group practices 12

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.

Hospital & facility affiliations 10

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": "1179878400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771459200000",
    "number": "1700096393",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17305 VON KARMAN AVE STE 100",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926140903",
            "telephone_number": "714-432-9990",
            "fax_number": "714-432-9988"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "17305 VON KARMAN AVE STE 100",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926140903",
            "telephone_number": "714-432-9990",
            "fax_number": "714-432-9988"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NINH",
        "first_name": "CHRISTOPHER",
        "middle_name": "C.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-23",
        "last_updated": "2026-02-19",
        "certification_date": "2026-02-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "CA",
            "license": "A98528",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Irvine, CA

Sources for this page

Verify at the official NPI Registry.