Individual provider Active NPI

Thalia Chien-I Mok

  • Maternal & Fetal Medicine Physician
  • Los Angeles, CA
National Provider Identifier
1922494327
Registry record updated Oct 16, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Maternal & Fetal Medicine PhysicianTaxonomy code 207VM0101X
License
A148545 Issued in CA
Practice address
UCLA OB GYN
757 Westwood Plaza, Room B-711
Los Angeles, CA 90095-0001
Phone
(310) 825-9945
NPI assigned
Apr 13, 2015
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 16, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X A148545 CA
Maternal & Fetal Medicine Physician 207VM0101X A148545 CA Primary

Addresses

Primary practice location

UCLA OB GYN
757 Westwood Plaza, Room B-711
Los Angeles, CA 90095-0001

Mailing address

5767 W Century Blvd Ste 400
Los Angeles, CA 90045-5631
Phone (310) 301-8707

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
I20190612003618 CA Practitioner - Obstetrics/Gynecology 6103177894 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Clvlnd Clinic Lerner College of Med of Case WSTN RSV University, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
The Regents of the University of CaliforniaGroup PAC ID 0143124289, 53 clinicians

Practice addresses (Care Compare)

1010 Veteran Ave
Los Angeles, CA 90024-2704
Phone (310) 825-7955

200 Medical Plaza
Los Angeles, CA 90095-0001
Phone (310) 794-7274

200 Medical PLZ
Suite 430
Los Angeles, CA 90095-6957
Phone (310) 794-7274

757 Westwood PLZ
Los Angeles, CA 90095-0001
Phone (310) 825-9111

Merit-based Incentive Payment System (MIPS)

Final score
84.28 of 100Reported as group
Quality
76.27
Promoting interoperability
100
Improvement activities
40
Cost
68.45

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A148545CAMDMaternal & Fetal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
The Regents of the University of California Obstetrics & Gynecology CurrentSince Jul 1, 2019 Accepting new patients
Regents Univ of Calif Los Angeles Past Accepting new patients
The Regents of the University of California Past Accepting new patients
UCLA Medical Group Maternal & Fetal Medicine Past Accepting new patients
Planned Parenthood of Greater New York Inc Past Accepting new patients

Locations

757 Westwood Plz
Rm B711
Los Angeles, CA 90095
Phone (310) 825-6643

200 UCLA Medical Plz
Ste 430
Los Angeles, CA 90095
Phone (310) 208-4492

5767 W Century Blvd
Ste 400
Los Angeles, CA 90045
Phone (310) 301-5200

200 Medical Plz
Ste 430
Los Angeles, CA 90095
Phone (310) 794-8282

File 54456
Los Angeles, CA 90074

13160 Mindanao Way
Ste 317
Marina del Rey, CA 90292
Phone (310) 301-0040

2001 Santa Monica Blvd
Ste 380
Santa Monica, CA 90404
Phone (310) 899-7500

1245 16th St
Ste 202
Santa Monica, CA 90404
Phone (310) 453-1982

1245 16th St
Ste 312
Santa Monica, CA 90404
Phone (310) 453-1982

Interoperability endpoints

  • Direct secure messaging: thalia.mokmd.p1@direct.plannedparenthoodla.nextgenshare.com
  • Direct secure messaging: twong382661@direct.uclahealth.org

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.

NPI Registry JSON

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

{
    "created_epoch": "1428883200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760572800000",
    "number": "1922494327",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631",
            "telephone_number": "310-301-8707",
            "fax_number": "310-301-8751"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "UCLA OB GYN",
            "address_2": "757 WESTWOOD PLAZA, ROOM B-711",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900950001",
            "telephone_number": "310-825-9945"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MOK",
        "first_name": "THALIA",
        "middle_name": "CHIEN-I",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-04-13",
        "last_updated": "2025-10-16",
        "certification_date": "2025-10-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "CA",
            "license": "A148545",
            "primary": false
        },
        {
            "code": "207VM0101X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": "CA",
            "license": "A148545",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Los Angeles, CA

Sources for this page

Verify at the official NPI Registry.