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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. KOU-YING HSIEH M.D.
NPI 1447208731
Internal Medicine in Emeryville, CA

Active since May 05, 2006
1250 45TH ST, EMERYVILLE, CA 94608(510) 596-8988(510) 596-8956 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Kou-ying Hsieh M.d. NPPES

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

DR. KOU-YING HSIEH M.D. (NPI 1447208731) is an individual internal medicine provider in Emeryville, California, licensed in California (A86471) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1447208731
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. KOU-YING HSIEHCredential: M.D.
Location Address1250 45TH STEmeryville, CA 94608-2924
Mailing Address3173 Cherry Valley CirFairfield, CA 94534-7512
Phone(510) 596-8988
Fax(510) 596-8956
Sole ProprietorNo
Enumeration DateMay 5, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1447208731 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A86471
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1250 45TH ST, Emeryville, CA 94608
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Other Identifiers 1

Medicaid00A864710CA

Other Providers at the Same Location NPPES 8

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

DR. LORILYN L SEID M.D.
Internal Medicine
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
JOSHUA M GITTER M.D.
Internal Medicine
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
DR. CURTIS I JOHNSON M.D.
Internal Medicine
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
DR. JOSE CAMARO M.D.
Internal Medicine
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
DR. JOHN C RUSSELL M.D.
Internal Medicine
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
DR. DANIEL R PERLOV M.D.
Anesthesiology
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
DR. BRIAN K ROBERTS M.D.
Internal Medicine
1250 45TH ST, STE 355
EMERYVILLE, CA 94608
Alameda County (510) 596-8988
DR. WENMEI XUE M.D.
Internal Medicine
1250 45TH ST
EMERYVILLE, CA 94608
Alameda County (510) 596-8988

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 Kou-ying Hsieh's NPI number?

The NPI number for Kou-ying Hsieh is 1447208731. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Kou-ying Hsieh located?

Kou-ying Hsieh practices at 1250 45th St, Emeryville, CA 94608. The listed phone number is (510) 596-8988.

What is Kou-ying Hsieh's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Kou-ying Hsieh was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.