Individual provider Active NPI

Tuan V Ta, MD

  • Infectious Disease Physician
  • Santa Ana, CA
National Provider Identifier
1114103124
Registry record updated Sep 2, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Infectious Disease PhysicianTaxonomy code 207RI0200X
License
A99653 Issued in CA
Practice address
999 N Tustin Ave Ste 224
Santa Ana, CA 92705-6506
Phone
(714) 664-0045
Fax
(714) 664-0049
NPI assigned
Jan 21, 2008
Last updated
Sep 2, 2025By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 2, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X A99653 CA
Infectious Disease Physician 207RI0200X A99653 CA Primary

Addresses

Primary practice location

999 N Tustin Ave Ste 224
Santa Ana, CA 92705-6506

Mailing address

2321 E 4TH Street
Suite C #637
Santa Ana, CA 92705-3606
Phone (714) 664-0045

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address tuanta@direct.practicefusion.com Health Information Exchange (HIE)

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
I20090209000444 CA Practitioner - Infectious Disease 8022173004 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Infectious Disease
Education
Albert Einstein College of Medicine of Yeshiva University, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Infectious Disease Associates of Orange County IncGroup PAC ID 9234432915, 7 clinicians

Practice addresses (Care Compare)

999 N Tustin Ave
Suite 224
Santa Ana, CA 92705-6506
Phone (714) 664-0045

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
59.34 of 100Reported as individual
Quality
69.33
Improvement activities
0
Cost
72.04

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Infectious Disease Associates of Orange County, Inc. Infectious Disease CurrentSince Feb 21, 2016 Accepting new patients
Newport Coast Infectious Disease Medical Corp Infectious Disease Past Accepting new patients

Locations

2321 E 4th St
Ste C
Santa Ana, CA 92705

2321 E 4th St
Ste C637
Santa Ana, CA 92705

720 N Tustin Ave
Ste 201
Santa Ana, CA 92705
Phone (714) 541-3570

999 N Tustin Ave
Santa Ana, CA 92705
Phone (714) 245-9991

999 N Tustin Ave
Ste 109
Santa Ana, CA 92705
Phone (714) 954-1182

999 N Tustin Ave
Ste 224
Santa Ana, CA 92705
Phone (714) 973-8522

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: tuanta@direct.practicefusion.com

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 6

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": "1200873600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756771200000",
    "number": "1114103124",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2321 E 4TH STREET",
            "address_2": "SUITE C #637",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927053606",
            "telephone_number": "714-664-0045",
            "fax_number": "714-664-0049"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "999 N TUSTIN AVE STE 224",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927056506",
            "telephone_number": "714-664-0045",
            "fax_number": "714-664-0049"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TA",
        "first_name": "TUAN",
        "middle_name": "V",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2008-01-21",
        "last_updated": "2025-09-02",
        "certification_date": "2025-09-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A99653",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "CA",
            "license": "A99653",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "tuanta@direct.practicefusion.com",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "999 N Tustin Ave Ste 224",
            "city": "Santa Ana",
            "state": "CA",
            "country_code": "US",
            "postal_code": "927056506",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Santa Ana, CA

Sources for this page

Verify at the official NPI Registry.