Mark Harris, DDS
General Practice Dentistry · Littleton, CO
Mark Harris, DDS is a general practice dentistry with a practice address in Littleton, Colorado, and NPI 1699774711, issued on Jul 20, 2005. Check the license (Colorado 6752, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Harris
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 6752 CO
Self-reported in NPPES; status is on the state search - Practice location
- 5590 S Windermere St, Littleton, CO 80120
- Phone
- (303) 794-3003
- Enumerated
- Jul 20, 2005
- Entity
- Type 1 · individual
Also registered at 5590 S Windermere St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Darrin Robertson, D.C.Chiropractor1235226895
Verify Mark Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 6752Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
6% fewer Medicare Part D claims than the average general practice dentistry in 2024
79 Medicare Part D claims for 37 beneficiaries, against an average of 84 among the 68,591 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Amoxicillin29 claims
- Chlorhexidine Gluconate16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
92 general practice dentistry records list a Littleton practice address
They are 92 of the 3,918 NPPES records with a Littleton practice address, and 2,463 general practice dentistry records in Colorado.
All 92 in Littleton → All 2,463 in Colorado → Every provider in Littleton →
Other general practice dentistry records in Colorado
- Kathryn Aasen, D.D.S.Usaf Academy, CO1508816109
- Danny Abboud, DDSBoulder, CO1285811679
- Andrew Abdelnour, DMDBroomfield, CO1689823346
- Sally Abouassaf, DDSParker, CO1659677805
- Alexander Acevedo, D.D.S.Westminster, CO1013131093
- Mayya Acherkan, D.D.S.Greenwood Village, CO1720124241
- Jess Adams, DDSColorado Springs, CO1033315627
- Larry Adams, DDSColorado Springs, CO1376545046
- Nana Adu AdjeiDenver, CO1750146668
- Michael Adler, DDSBoulder, CO1447351895
Common questions
What is Mark Harris, DDS's NPI number?
Mark Harris, DDS's National Provider Identifier (NPI) is 1699774711, issued on Jul 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Harris, DDS located?
The NPPES record lists a practice address at 5590 S Windermere St, Littleton, CO, 80120. Phone: (303) 794-3003. Providers update this record themselves, so call before visiting.
How can I verify Mark Harris, DDS's license?
NPPES lists Colorado license number 6752, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Harris, DDS prescribe under Medicare Part D?
In 2024, Mark Harris, DDS had 79 Medicare Part D claims for 37 beneficiaries; the average among general practice dentistry prescribers was 84. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.