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LILLIAN CHOI MD INC
NPI 1902552003
Internal Medicine - Gastroenterology in Merced, CA

Active since February 28, 2022
360 E YOSEMITE AVE STE 300, MERCED, CA 95340(209) 720-7183(209) 720-7371 Get Directions Write a Review

NPPES record last updated: February 28, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Lillian Choi Md Inc NPPES

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

LILLIAN CHOI MD INC (NPI 1902552003) is a healthcare organization registered as a gastroenterology in Merced, California and active in the NPI registry since February 2022. The organization lists Lillian Youngju Choi, Dr, as its authorized official.

NPPES Registry Identity

NPI1902552003
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameLILLIAN CHOI MD INC
Location Address360 E YOSEMITE AVE STE 300Merced, CA 95340-8201
Mailing Address360 E Yosemite Ave Ste 300Merced, CA 95340-8201 · (209) 720-7183 · Fax (209) 720-7371
Phone(209) 720-7183
Fax(209) 720-7371
Organization SubpartNo
Authorized OfficialLillian Youngju ChoiDr · (510) 427-5707
Enumeration DateFebruary 28, 2022
NPPES CertifiedFebruary 28, 2022
✔ NPI 1902552003 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
360 E YOSEMITE AVE STE 300, Merced, CA 95340
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lillian Choi Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Lillian Choi MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Lillian Choi, MD
Gastroenterology
NPI 1790769818
360 E YOSEMITE AVE STE 300
Merced, CA 95340
(209) 720-7183
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Lillian Choi MD Inc's NPI number?

The NPI number for Lillian Choi MD Inc is 1902552003. It was assigned to this organization in the NPPES registry on February 28, 2022.

Where is Lillian Choi MD Inc located?

Lillian Choi MD Inc is located at 360 E Yosemite Ave Ste 300, Merced, CA 95340. The listed phone number is (209) 720-7183.

What is Lillian Choi MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Lillian Choi MD Inc enrolled in Medicare?

Yes. Lillian Choi MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Lillian Choi MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Gastroenterology) reassigns their Medicare billing to Lillian Choi MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Lillian Choi MD Inc was last updated on February 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.