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ANDREW S. CHEN, M.D., INC.
NPI 1194592923
Internal Medicine in Fontana, CA

Active since December 12, 2023
14050 CHERRY AVE STE C, FONTANA, CA 92337(909) 823-5220(909) 823-7650 Get Directions Write a Review

NPPES record last updated: December 12, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Andrew S. Chen, M.d., Inc. NPPES

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

ANDREW S. CHEN, M.D., INC. (NPI 1194592923) is a healthcare organization registered as an internal medicine in Fontana, California and active in the NPI registry since December 2023. The organization lists Andrew S. Chen, President, as its authorized official.

NPPES Registry Identity

NPI1194592923
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameANDREW S. CHEN, M.D., INC.
Location Address14050 CHERRY AVE STE CFontana, CA 92337-8312
Mailing Address14050 Cherry Ave Ste CFontana, CA 92337-8312 · (909) 823-5220 · Fax (909) 823-7650
Phone(909) 823-5220
Fax(909) 823-7650
Organization SubpartNo
Authorized OfficialAndrew S. ChenPresident · (909) 823-5220
Enumeration DateDecember 12, 2023
NPPES CertifiedDecember 11, 2023
✔ NPI 1194592923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
14050 CHERRY AVE STE C, Fontana, CA 92337
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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)

Andrew S. Chen, M.d., 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 Andrew S. Chen, M.D., Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Andrew Chen
Internal Medicine
NPI 1053873646
14050 CHERRY AVE STE C
Fontana, CA 92337
(909) 823-5220
✔ 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 Andrew S. Chen, M.D., Inc.'s NPI number?

The NPI number for Andrew S. Chen, M.D., Inc. is 1194592923. It was assigned to this organization in the NPPES registry on December 12, 2023.

Where is Andrew S. Chen, M.D., Inc. located?

Andrew S. Chen, M.D., Inc. is located at 14050 Cherry Ave Ste C, Fontana, CA 92337. The listed phone number is (909) 823-5220.

What is Andrew S. Chen, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Andrew S. Chen, M.D., Inc. enrolled in Medicare?

Yes. Andrew S. Chen, M.D., Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Andrew S. Chen, M.D., Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Andrew S. Chen, M.D., 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 Andrew S. Chen, M.D., Inc. was last updated on December 12, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.