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THALIA CHIEN-I MOK
NPI 1922494327
Obstetrics & Gynecology - Maternal & Fetal Medicine in Los Angeles, CA

Active since April 13, 2015PECOS EnrolledAccepts Medicare Assignment
77.34/100
CMS Quality Rating
UCLA OB GYN, 757 WESTWOOD PLAZA, ROOM B-711, LOS ANGELES, CA 90095(310) 825-9945 Get Directions Write a Review

NPPES record last updated: October 16, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 6, 2021, Oct 8, 2019 (2 updates tracked since 2019).

About Thalia Chien-i Mok NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THALIA CHIEN-I MOK (NPI 1922494327) is an individual maternal & fetal medicine provider in Los Angeles, California, licensed in California (A148545) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (2015).

NPPES Registry Identity

NPI1922494327
Entity TypeIndividualFemale
Primary Taxonomy207VM0101X
Provider Legal NameTHALIA CHIEN-I MOK
Location AddressUCLA OB GYN, 757 WESTWOOD PLAZA, ROOM B-711Los Angeles, CA 90095-0001
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631 · (310) 301-8707 · Fax (310) 301-8751
Phone(310) 825-9945
Sole ProprietorNo
Medical School CMSClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv UniversityGraduated 2015
Enumeration DateApril 13, 2015
Last NPPES UpdateOctober 16, 20252 updates tracked since enumeration
NPPES CertifiedOctober 16, 2025
✔ NPI 1922494327 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in CA · A148545
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License A148545 (CA)
UCLA OB GYN, Los Angeles, CA 90095
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Thalia Chien-i Mok is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103177894
PECOS Enrollment IDI20190612003618
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90095 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.34/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.55
Promoting Interoperability100
Improvement Activities40
Cost39.93

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CONNIE YU HENG CHENG MD
Obstetrics & Gynecology
UCLA OB GYN, 757 WESTWOOD PLAZA, ROOM B-711
LOS ANGELES, CA 90095
Los Angeles County (310) 825-9945

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thalia Mok's NPI number?

The NPI number for Thalia Mok is 1922494327. It was assigned to this individual provider in the NPPES registry on April 13, 2015.

Where is Thalia Mok located?

Thalia Mok practices at Ucla Ob Gyn 757 Westwood Plaza, Room B-711, Los Angeles, CA 90095. The listed phone number is (310) 825-9945.

What is Thalia Mok's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Thalia Mok enrolled in Medicare?

Yes. Thalia Mok is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Thalia Mok was last updated on October 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.