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ORANGE COUNTY HAND SURGERY SPECIALISTS
NPI 1790065621
Orthopaedic Surgery - Hand Surgery in Fountain Valley, CA

Active since August 23, 2011
11190 WARNER AVE, SUITE 307, FOUNTAIN VALLEY, CA 92708(714) 434-3518(714) 434-3759 Get Directions Write a Review

NPPES record last updated: May 2, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Orange County Hand Surgery Specialists NPPES

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

ORANGE COUNTY HAND SURGERY SPECIALISTS (NPI 1790065621) is a healthcare organization registered as a hand surgery in Fountain Valley, California and active in the NPI registry since August 2011. The organization lists Ying Chi, President, as its authorized official.

NPPES Registry Identity

NPI1790065621
Entity TypeOrganization
Primary Taxonomy207XS0106X
Legal Business NameYING CHI MD INC.
Location Address11190 WARNER AVE, SUITE 307Fountain Valley, CA 92708-4019
Mailing Address11190 Warner Ave, Suite 307Fountain Valley, CA 92708-4019 · (714) 443-4351 · Fax (714) 434-3759
Phone(714) 434-3518
Fax(714) 434-3759
Organization SubpartNo
Authorized OfficialYing ChiPresident · (714) 434-3518
Enumeration DateAugust 23, 2011
Last NPPES UpdateMay 2, 2023
NPPES CertifiedMay 2, 2023
✔ NPI 1790065621 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Hand SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XS0106X
License✔ Licensed in CA · A107272
Definition
An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist.
11190 WARNER AVE, Fountain Valley, CA 92708
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Other Names 1

Doing Business AsOrange County Hand Surgery Specialists

Other Identifiers 2

Other4302721Medicare Provider Number
Other1518178169Npi 1

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)

Orange County Hand Surgery Specialists 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 Orange County Hand Surgery Specialists, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ying Chi, M.D.
Orthopedic Surgery
NPI 1518178169
11190 WARNER AVE SUITE 307
Fountain Valley, CA 92708
(714) 434-3518
✔ 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 Ying Chi MD Inc.'s NPI number?

The NPI number for Ying Chi MD Inc. is 1790065621. It was assigned to this organization in the NPPES registry on August 23, 2011. The provider is doing business as Orange County Hand Surgery Specialists.

Where is Ying Chi MD Inc. located?

Ying Chi MD Inc. is located at 11190 Warner Ave Suite 307, Fountain Valley, CA 92708. The listed phone number is (714) 434-3518.

What is Ying Chi MD Inc.'s specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Hand Surgery, with taxonomy code 207XS0106X.

Is Ying Chi MD Inc. enrolled in Medicare?

Yes. Ying Chi MD Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ying Chi MD Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Orthopedic Surgery) reassigns their Medicare billing to Ying Chi 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 Ying Chi MD Inc. was last updated on May 2, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.