RICHARD H. YOOK, M.D, INC.
NPI 1225225238
Ophthalmology in Northridge, CA

Q: What is Richard H. Yook, M.D, Inc.'s NPI number?

The NPI number for Richard H. Yook, M.D, Inc. is 1225225238. It was assigned to this organization in the NPPES registry on October 3, 2007.

Q: What is Richard H. Yook, M.D, Inc.'s specialty?

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

Active since October 03, 2007

18137 PARTHENIA ST # A, NORTHRIDGE, CA 91325(818) 993-5410(818) 993-8300 Get Directions Write a Review

NPPES record last updated: March 19, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Richard H. Yook, M.d, Inc. NPPES

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

RICHARD H. YOOK, M.D, INC. (NPI 1225225238) is a healthcare organization registered as an ophthalmology in Northridge, California and active in the NPI registry since October 2007. The organization lists Chee Hian Tan, Ceo, as its authorized official.

NPPES Registry Identity

NPI1225225238

Entity TypeOrganization

Primary Taxonomy207W00000X

Legal Business NameRICHARD H. YOOK, M.D, INC.

Location Address18137 PARTHENIA ST # ANorthridge, CA 91325-3301

Mailing Address18137 Parthenia St # ANorthridge, CA 91325-3301 · (818) 993-5410 · Fax (818) 993-8300

Phone(818) 993-5410

Fax(818) 993-8300

Organization SubpartNo

Authorized OfficialChee Hian TanCeo · (818) 993-5410

Enumeration DateOctober 3, 2007

Last NPPES UpdateMarch 19, 2025

NPPES CertifiedMarch 19, 2025

✔ NPI 1225225238 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · G24712

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.

18137 PARTHENIA ST # A, Northridge, CA 91325

Open in Google Maps ↗

Other Identifiers 3

MedicaidG24712CA

OtherG24712CA · Medicare Id

Medicaid00G247120CA

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

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 Richard H. Yook, M.D, Inc.'s NPI number?

The NPI number for Richard H. Yook, M.D, Inc. is 1225225238. It was assigned to this organization in the NPPES registry on October 3, 2007.

Where is Richard H. Yook, M.D, Inc. located?

Richard H. Yook, M.D, Inc. is located at 18137 Parthenia St # A, Northridge, CA 91325. The listed phone number is (818) 993-5410.

What is Richard H. Yook, M.D, Inc.'s specialty?

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

When was this NPI record last updated?

The NPPES record for Richard H. Yook, M.D, Inc. was last updated on March 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.