Mark Dewayne Gregston, D.D.S.
Orthodontics and Dentofacial Orthopedics Dentistry · Denver, CO
Mark Dewayne Gregston, D.D.S. is an orthodontics and dentofacial orthopedics dentistry with a practice address in Denver, Colorado, and NPI 1790878619, issued on Oct 2, 2006. Check the license (Colorado 8720, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Dewayne Gregston
- Credential
- D.D.S.
- Primary taxonomy
- Orthodontics and Dentofacial Orthopedics Dentistry 1223X0400X
- License number
- 8720 CO
Self-reported in NPPES; status is on the state search - Practice location
- 7150 E Hampden Ave, Denver, CO 80224
- Phone
- (303) 758-2366
- Enumerated
- Oct 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (303) 756-1460
- Entity
- Type 1 · individual
8 nearest orthodontics and dentofacial orthopedics dentistry records → All 328 in Colorado → Look up another NPI →
Also registered at 7150 E Hampden Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Abrams, DDSDentist1134223514
- Bret Lafonte, DDSDentist1972694693
- Shelly Lovitt, MD02/09/1969Obstetrics & Gynecology Physician1164471314
Verify Mark Dewayne Gregston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 8720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $427.12
9 payments; by number, the most common kind was food and beverage; the largest payer was American Orthodontics Corporation. The 7,622 providers of this specialty with any payment received $1,641.73 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark Dewayne Gregston among 328 orthodontics and dentofacial orthopedics dentistry records in Colorado
Mark Dewayne Gregston, D.D.S. is one of 328 orthodontics and dentofacial orthopedics dentistry records with a practice address in Colorado. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 72% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223X0400X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthodontics and Dentofacial Orthopedics Dentistry providers in Colorado
There are 328 orthodontics and dentofacial orthopedics dentistry records in Colorado.
All 328 in Colorado → Every provider in Denver → Orthodontics and Dentofacial Orthopedics Dentistry nationwide →
The 8 orthodontics and dentofacial orthopedics dentistry records with the nearest ZIP codes
- Michael Bellon, DDS MSDenver, CO 802241538380282
- Gregory Dietmeier, DDS MS PCDenver, CO 802241396884490
- Erin Sloss, D.D.S., M.S.Denver, CO 802241023026382
- Hilary Nieberg Baskin, DDSDenver, CO 802221538376124
- Cierra Randall, DDS MSDLakewood, CO 802261295432573
- Christopher CanizaresDenver, CO 802211124307426
- Stephen Carter, DDS, MSLakewood, CO 802271780645259
- Lina Kulkarni, D.D.S., M.D.S.Lakewood, CO 802271255626354
Common questions
What is Mark Dewayne Gregston, D.D.S.'s NPI number?
Mark Dewayne Gregston, D.D.S.'s National Provider Identifier (NPI) is 1790878619, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Dewayne Gregston, D.D.S. located?
The NPPES record lists a practice address at 7150 E Hampden Ave, Denver, CO, 80224. Phone: (303) 758-2366. Providers update this record themselves, so call before visiting.
How can I verify Mark Dewayne Gregston, D.D.S.'s license?
NPPES lists Colorado license number 8720, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.