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STEPHANIE P CHEN, MD INC
NPI 1740155464
Ophthalmology in Los Altos, CA

Active since October 10, 2025
762 ALTOS OAKS DR, LOS ALTOS, CA 94024(650) 948-9123 Get Directions Write a Review

NPPES record last updated: April 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 16, 2026, Oct 10, 2025 (2 updates tracked since 2025).

About Stephanie P Chen, Md Inc NPPES

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

STEPHANIE P CHEN, MD INC (NPI 1740155464) is a healthcare organization registered as an ophthalmology in Los Altos, California and active in the NPI registry since October 2025. The organization lists Stephanie Chen, Owner, as its authorized official.

NPPES Registry Identity

NPI1740155464
Entity TypeOrganization
Primary Taxonomy207W00000X
Legal Business NameSTEPHANIE P CHEN, MD INC
Location Address762 ALTOS OAKS DRLos Altos, CA 94024-5434
Mailing Address762 Altos Oaks DrLos Altos, CA 94024-5434
Phone(650) 948-9123
Organization SubpartNo
Authorized OfficialStephanie ChenOwner · (650) 948-9123
Enumeration DateOctober 10, 2025
Last NPPES UpdateApril 16, 20262 updates tracked since enumeration
NPPES CertifiedApril 16, 2026
✔ NPI 1740155464 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
762 ALTOS OAKS DR, Los Altos, CA 94024
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Stephanie P Chen, 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 Stephanie P Chen, MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Stephanie Chen, MD
Ophthalmology
NPI 1629572136
762 ALTOS OAKS DR
Los Altos, CA 94024
(650) 948-9123
✔ PECOSSame 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 Stephanie P Chen, MD Inc's NPI number?

The NPI number for Stephanie P Chen, MD Inc is 1740155464. It was assigned to this organization in the NPPES registry on October 10, 2025.

Where is Stephanie P Chen, MD Inc located?

Stephanie P Chen, MD Inc is located at 762 Altos Oaks Dr, Los Altos, CA 94024. The listed phone number is (650) 948-9123.

What is Stephanie P Chen, MD Inc's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Stephanie P Chen, MD Inc enrolled in Medicare?

Yes. Stephanie P Chen, MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Stephanie P Chen, MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Ophthalmology) reassigns their Medicare billing to Stephanie P Chen, 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 Stephanie P Chen, MD Inc was last updated on April 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.