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

Weiyi Tang, MD

Individual provider Internal Medicine Physician · NPI 1255307971

Weiyi Tang, MD is an Internal Medicine Physician in Marion, Illinois. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2401 W Main St
Marion, IL 62959-1188
Phone: (618) 997-5311
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 A73375 (CA)

Record details

NPI number1255307971
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 23, 2006
Last updated in NPPESJuly 13, 2026

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