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

Dr. David Alan Diak, DMD

Individual provider General Practice Dentistry · NPI 1134234636

Dr. David Alan Diak, DMD is a General Practice Dentistry in Granite City, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
What do these letters mean?
DMD — Doctor of Dental Medicine
A dentist. Identical training and licensing to a DDS.

See every abbreviation used in this directory →

Practice location Address checks out

1911 Johnson Rd Ste # 1
Granite City, IL 62040-3835
Phone: (618) 877-3434
Fax: (618) 877-3434
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X (IL)

Record details

NPI number1134234636
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorYes
NPI enumeratedAugust 21, 2006
Last updated in NPPESJuly 8, 2007

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