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

Dr. Mark Joseph Cassidy, DMD

Individual provider Orthodontics and Dentofacial Orthopedics Dentistry · NPI 1619004868

Dr. Mark Joseph Cassidy, DMD is an Orthodontics and Dentofacial Orthopedics Dentistry in Centennial, Colorado. Practices as a sole proprietor. Licensed in Colorado.

Licensed in
CO
In the registry since
2007
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

6979 S Holly Cir #280
Centennial, CO 80112-1577
Phone: (303) 779-1977
Fax: (303) 779-2530
Show map & directions

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

Specialties & licences

Orthodontics and Dentofacial Orthopedics Dentistry (primary) Taxonomy 1223X0400X · Licence 105766 (CO)

Record details

NPI number1619004868
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorYes
NPI enumeratedFebruary 27, 2007
Last updated in NPPESJuly 8, 2007
Mailing address6979 S Holly Cir, 280, Centennial, CO 80112-1577

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