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

Dr. Mark Dewayne Gregston, DDS

Individual provider Orthodontics and Dentofacial Orthopedics Dentistry · NPI 1790878619

Dr. Mark Dewayne Gregston, DDS is an Orthodontics and Dentofacial Orthopedics Dentistry in Denver, Colorado. Practices as a sole proprietor. Licensed in Colorado.

Licensed in
CO
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

7150 E Hampden Ave #200
Denver, CO 80224-3025
Phone: (303) 758-2366
Fax: (303) 756-1460
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 8720 (CO)

Record details

NPI number1790878619
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedOctober 2, 2006
Last updated in NPPESJuly 8, 2007
Mailing address7150 E Hampden Ave, 200, Denver, CO 80224-3025

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