CLARK S TSAI, M.D., INC.
NPI 1871861559
Ophthalmology in Oakland, CA

Q: What is Clark S Tsai, M.D., Inc.'s NPI number?

The NPI number for Clark S Tsai, M.D., Inc. is 1871861559. It was assigned to this organization in the NPPES registry on December 8, 2011.

Q: What is Clark S Tsai, M.D., Inc.'s specialty?

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

Active since December 08, 2011

350 30TH ST, SUITE 444, OAKLAND, CA 94609(925) 864-8886(925) 689-7748 Get Directions Write a Review

NPPES record last updated: December 9, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Clark S Tsai, M.d., Inc. NPPES

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

CLARK S TSAI, M.D., INC. (NPI 1871861559) is a healthcare organization registered as an ophthalmology in Oakland, California and active in the NPI registry since December 2011. The organization lists Clark S. Tsai, Ceo/president, as its authorized official.

NPPES Registry Identity

NPI1871861559

Entity TypeOrganization

Primary Taxonomy207W00000X

Legal Business NameCLARK S TSAI, M.D., INC.

Location Address350 30TH ST, SUITE 444Oakland, CA 94609-3424

Mailing Address2225 Port Chicago HwyConcord, CA 94520-2051 · (925) 864-8886 · Fax (925) 689-7748

Phone(925) 864-8886

Fax(925) 689-7748

Organization SubpartNo

Authorized OfficialClark S. TsaiCeo/president · (925) 864-8886

Enumeration DateDecember 8, 2011

Last NPPES UpdateDecember 9, 2011

✔ NPI 1871861559 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · G76192

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.

350 30TH ST, Oakland, CA 94609

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Other Identifiers 4

Medicare PINZZZ32492ZCA

Medicaid00G761992CA

Medicare NSC5415470001CA

Medicare UPINY27763CA

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

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. HUBERT K WONG M.D.

Ophthalmology

350 30TH ST, SUITE 444
OAKLAND, CA 94609

Alameda County (510) 832-8080

NICOLE MARIE KAIPUST M.D.

Hospitalist

350 30TH ST, SUITE 320
OAKLAND, CA 94609

Alameda County (510) 465-6700

RANDALL HEALTHCARE INC

Internal Medicine

350 30TH ST, #100
OAKLAND, CA 94609

Alameda County (510) 342-2239

PHILLIP LEON ROSS MD

Urology

350 30TH ST, STE 100
OAKLAND, CA 94609

Alameda County (510) 204-8290

ZULFIKARAL HABIB LALANI

Radiologic Technologist (Sonography)

350 30TH ST, SUITE 320
OAKLAND, CA 94609

Alameda County (510) 465-6700

LORI M BELTRAN D.O.

Family Medicine

350 30TH ST, SUITE 407
OAKLAND, CA 94609

Alameda County (510) 419-0230

MS. ANN MARIE DALEIDEN NP

Nurse Practitioner (Gerontology)

350 30TH ST, SUITE 407
OAKLAND, CA 94609

Alameda County (510) 419-0230

ANNA FRICK MD

Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)

350 30TH ST, SUITE 100
OAKLAND, CA 94609

Alameda County (510) 204-1844

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 Clark S Tsai, M.D., Inc.'s NPI number?

The NPI number for Clark S Tsai, M.D., Inc. is 1871861559. It was assigned to this organization in the NPPES registry on December 8, 2011.

Where is Clark S Tsai, M.D., Inc. located?

Clark S Tsai, M.D., Inc. is located at 350 30th St Suite 444, Oakland, CA 94609. The listed phone number is (925) 864-8886.

What is Clark S Tsai, 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 Clark S Tsai, M.D., Inc. was last updated on December 9, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.