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

Dr. Si-Yuen Moy, MD

Individual provider Internal Medicine Physician · NPI 1649465162

Dr. Si-Yuen Moy, MD is an Internal Medicine Physician in Siuox Falls, South Dakota. Licensed in New York. Registered with an NPI since 2007.

Licensed in
NY
In the registry since
2007
Specialties on file
2
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

2501 W 22nd Street 111-ONC
Siuox Falls, SD 57117
Phone: (605) 336-3230
Fax: (605) 333-5380
Show map & directions

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

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 234766 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 234766 (NY)

Record details

NPI number1649465162
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 7, 2007
Last updated in NPPESOctober 21, 2011