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WILLIAM H. HONG, M.D., INC
NPI 1255529152
Internal Medicine - Rheumatology in Inglewood, CA

Active since October 05, 2007
575 E HARDY ST, SUITE 212, INGLEWOOD, CA 90301(310) 674-9710(310) 590-1030 Get Directions Write a Review

NPPES record last updated: June 24, 2009. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About William H. Hong, M.d., Inc NPPES

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

WILLIAM H. HONG, M.D., INC (NPI 1255529152) is a healthcare organization registered as a rheumatology in Inglewood, California and active in the NPI registry since October 2007. The organization lists William H Hong, President, as its authorized official.

NPPES Registry Identity

NPI1255529152
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business NameWILLIAM H. HONG, M.D., INC
Location Address575 E HARDY ST, SUITE 212Inglewood, CA 90301-4026
Mailing AddressPo Box 1634Inglewood, CA 90308-1634 · (310) 674-9710
Phone(310) 674-9710
Fax(310) 590-1030
Organization SubpartNo
Authorized OfficialWilliam H HongPresident · (310) 674-9710
Enumeration DateOctober 5, 2007
Last NPPES UpdateJune 24, 2009
✔ NPI 1255529152 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · A52579
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
Also ListedInternal MedicineTaxonomy 207R00000X · License A52579 (CA)
575 E HARDY ST, Inglewood, CA 90301
Open in Google Maps ↗

Other Identifiers 1

OtherW16682CA · Medicare Provider Number

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)

William H. Hong, 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 William H. Hong, M.D., Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

William Hong, MD
Rheumatology
NPI 1245306745
575 E HARDY ST SUITE 212
Inglewood, CA 90301
(310) 674-9710
✔ 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 William H. Hong, M.D., Inc's NPI number?

The NPI number for William H. Hong, M.D., Inc is 1255529152. It was assigned to this organization in the NPPES registry on October 5, 2007.

Where is William H. Hong, M.D., Inc located?

William H. Hong, M.D., Inc is located at 575 E Hardy St Suite 212, Inglewood, CA 90301. The listed phone number is (310) 674-9710.

What is William H. Hong, M.D., Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is William H. Hong, M.D., Inc enrolled in Medicare?

Yes. William H. Hong, M.D., Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William H. Hong, M.D., Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Rheumatology) reassigns their Medicare billing to William H. Hong, 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 William H. Hong, M.D., Inc was last updated on June 24, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.