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GARY CHEN MD INC
NPI 1891912432
Orthopaedic Surgery - Hand Surgery in Los Angeles, CA

Active since April 18, 2007
1513 S. GRAND AVE., SUTE 208, LOS ANGELES, CA 90015(213) 765-8088(213) 765-8181 Get Directions Write a Review

NPPES record last updated: April 14, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gary Chen Md Inc NPPES

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

GARY CHEN MD INC (NPI 1891912432) is a healthcare organization registered as a hand surgery in Los Angeles, California and active in the NPI registry since April 2007. The organization lists Gary Chen, Owner, as its authorized official.

NPPES Registry Identity

NPI1891912432
Entity TypeOrganization
Primary Taxonomy207XS0106X
Legal Business NameGARY CHEN MD INC
Location Address1513 S. GRAND AVE., SUTE 208Los Angeles, CA 90015
Mailing AddressPo Box 3365Cerritos, CA 90703-3365 · (213) 765-8088 · Fax (213) 765-8181
Phone(213) 765-8088
Fax(213) 765-8181
Organization SubpartYesParent: Califorina Othopedic Institute
Authorized OfficialGary ChenOwner · (213) 765-8088
Enumeration DateApril 18, 2007
Last NPPES UpdateApril 14, 2010
✔ NPI 1891912432 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 6

★ Primary SpecialtyOrthopaedic Surgery · Hand SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XS0106X
License✔ Licensed in CA · A78259
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.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License A78258 (CA)
Also ListedOrthopaedic Surgery · Pediatric Orthopaedic SurgeryTaxonomy 207XP3100X
Also ListedOrthopaedic Surgery · Foot and Ankle SurgeryTaxonomy 207XX0004X · License A78259 (CA)
Also ListedOrthopaedic Surgery · Sports MedicineTaxonomy 207XX0005X · License A78259 (CA)
Also ListedOrthopaedic Surgery · Orthopaedic TraumaTaxonomy 207XX0801X · License A78259 (CA)
1513 S. GRAND AVE., Los Angeles, CA 90015
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Other Identifiers 2

Medicare UPINI43717CA
Medicare ID-Type UnspecifiedW19273CA

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)

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

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Gary Chen MD Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (5)

Darryl Willoughby, MD
Orthopedic Surgery
NPI 1962585570
1513 S GRAND AVE # 208
Los Angeles, CA 90015
(213) 765-8088
✔ PECOS✔ Accepts MedicareSame address
Gary Chen, M.D.
Orthopedic Surgery
NPI 1831123934
1414 S. GRAND AVE STE. 307
Los Angeles, CA 90015
(213) 765-8088
✔ PECOS✔ Accepts Medicare0.1 mi
Sergio Espanto, OTR/L, CHT
Occupational Therapist in Private Practice
NPI 1871789966
657 E MENDOCINO ST
Altadena, CA 91001
(323) 828-7718
13 mi
Juan Frisancho, M.D.
Orthopedic Surgery
NPI 1346297165
23600 TELO AVE STE 180
Torrance, CA 90505
(310) 257-1500
✔ PECOS✔ Accepts Medicare16 mi
Jaron Andersen, MD
Orthopedic Surgery
NPI 1639381759
14642 NEWPORT AVE STE 105
Tustin, CA 92780
(949) 688-0958
✔ PECOS✔ Accepts Medicare33 mi

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 Gary Chen MD Inc's NPI number?

The NPI number for Gary Chen MD Inc is 1891912432. It was assigned to this organization in the NPPES registry on April 18, 2007.

Where is Gary Chen MD Inc located?

Gary Chen MD Inc is located at 1513 S. Grand Ave. Sute 208, Los Angeles, CA 90015. The listed phone number is (213) 765-8088.

What is Gary Chen MD Inc's specialty?

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

Is Gary Chen MD Inc enrolled in Medicare?

Yes. Gary Chen MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gary Chen MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Gary 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. The largest specialties are Orthopedic Surgery (4) and Occupational Therapist in Private Practice (1). Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Gary Chen MD Inc was last updated on April 14, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.