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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.

MU HSIUNG CHOU MD
NPI 1699727487
Internal Medicine in Napa, CA

Active since May 17, 2006
2100 NAPA VALLEJO HIGHWAY, NAPA, CA 94558(707) 253-5000(707) 253-5513 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mu Hsiung Chou Md NPPES

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

MU HSIUNG CHOU MD (NPI 1699727487) is an individual internal medicine provider in Napa, California, licensed in California (A29931) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1699727487
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMU HSIUNG CHOUCredential: MD
Location Address2100 NAPA VALLEJO HIGHWAYNapa, CA 94558-6293
Mailing Address1600 9th Street, Room 205, Mailstop 2-3Sacramento, CA 95814-6414 · (916) 654-2431 · Fax (916) 654-3186
Phone(707) 253-5000
Fax(707) 253-5513
Sole ProprietorNo
Enumeration DateMay 17, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1699727487 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 · A29931
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.
2100 NAPA VALLEJO HIGHWAY, Napa, CA 94558
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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. KENNETH ROBERT LAKRITZ PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
HOWARD MATTHEW EISENSTARK MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
MARGARET LEFTWICH MILLER MD
Psychiatry & Neurology (Forensic Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
CRISTIAN G MATEESCU MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
DR. KAREN ELIZABETH PHILLIPS PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
MS. MICHELE LEE MCCOLM PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
AHMED M HAGGAG MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
AMARPREET SINGH
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000

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 Mu Chou's NPI number?

The NPI number for Mu Chou is 1699727487. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Where is Mu Chou located?

Mu Chou practices at 2100 Napa Vallejo Highway, Napa, CA 94558. The listed phone number is (707) 253-5000.

What is Mu Chou'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 Mu Chou 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 33 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.