Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Wai-Shing Ng, MD

Individual provider Internal Medicine Physician · NPI 1538301221

Dr. Wai-Shing Ng, MD is an Internal Medicine Physician in Napa, California. Licensed in California. Registered with an NPI since 2009.

Licensed in
CA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2100 Napa Vallejo Hwy
Napa, CA 94558-6293
Phone: (707) 253-5000
Fax: (707) 253-5513
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A41995 (CA)

Record details

NPI number1538301221
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 27, 2009
Last updated in NPPESMay 6, 2014
Mailing address2100 Napa Vallejo Hwy, Napa, CA 94558-6293

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