YAN S. ZHAO M.D.
NPI 1891915336
Internal Medicine - Gastroenterology in Loma Linda, CA

Q: What is Yan Zhao's NPI number?

The NPI number for Yan Zhao is 1891915336. It was assigned to this individual provider in the NPPES registry on April 26, 2007.

Q: What is Yan Zhao's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Yan Zhao was last updated on April 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since April 26, 2007PECOS Enrolled

11201 BENTON ST, LOMA LINDA, CA 92357(909) 825-7084 Get Directions Write a Review

NPPES record last updated: April 1, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Yan S. Zhao M.d. NPPES

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

YAN S. ZHAO M.D. (NPI 1891915336) is an individual gastroenterology provider in Loma Linda, California, licensed in California (A80975) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1891915336

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameYAN S. ZHAOCredential: M.D.

Location Address11201 BENTON STLoma Linda, CA 92357-1000

Mailing Address56994 File NumberLos Angeles, CA 90074-6994 · (909) 558-3111

Phone(909) 825-7084

Sole ProprietorNo

Enumeration DateApril 26, 2007

Last NPPES UpdateApril 1, 2025

NPPES CertifiedApril 1, 2025

✔ NPI 1891915336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A80975

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License A80975 (CA)

11201 BENTON ST, Loma Linda, CA 92357

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Other Identifiers 1

Medicaid00A809750CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Yan S. Zhao M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Yan Zhao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Faculty Physicians And Surgeons Of Llusm

0.2 mi

Urology

11360 MT VIEW AVE STE B
Loma Linda, CA 92354

Reassigned Medicare billing, California enrollment
2,584 clinicians in this Medicare group

NPI 1790326825 (909) 558-2830

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92357 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

$136.04 typical visit price

range $59.60 – $179.42

Typical copayment $34.01 (range $14.90 – $44.85)

Most-billed visit code 99204

Established Patient

$104.64 typical visit price

range $19.37 – $146.42

Typical copayment $26.16 (range $4.84 – $36.60)

Most-billed visit code 99214

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.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

100%52 patients5/55-star benchmark: 100%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

100%57 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

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

DR. ARTHUR CHUNG-LIUNG CHANG M.D.

Radiology (Diagnostic Radiology)

11201 BENTON ST, VA LOMA LINDA HEALTHCARE SYSTEM - DEPT OF RADIOLOGY
LOMA LINDA, CA 92357

San Bernardino County (909) 825-7084

JUNGMI LEE LCSW

Social Worker (Clinical)