Aaron D. Mortensen, D.M.D
Dentist · Longmont, CO
Aaron D. Mortensen, D.M.D is a dentist with a practice address in Longmont, Colorado, and NPI 1861726978, issued on Sep 22, 2009. Check the license (Colorado 9994, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Aaron D. Mortensen
- Credential
- D.M.D
- Primary taxonomy
- Dentist 122300000X
- License number
- 9994 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1750 Mountain View Ave, Longmont, CO 80501
- Phone
- (303) 678-7783
- Enumerated
- Sep 22, 2009
- Record last updated
- Sep 22, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (303) 532-2287
- Entity
- Type 1 · individual
8 nearest dentist records → All 2,020 in Colorado → Look up another NPI →
Also registered at 1750 Mountain View Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alfred Carr, MDOtolaryngology/Facial Plastic Surgery Physician1285745695
- Richard Luong, D.M.D.Dentist1902273253
- Stephen Sidwell, DDSGeneral Practice Dentistry1528204641
- Conrad Stutznegger, DDSGeneral Practice Dentistry1801087960
Verify Aaron D. Mortensen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 9994Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average dentist in 2024
77 Medicare Part D claims for 48 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Amoxicillin30 claims
- Hydrocodone-Acetaminophen19 claims
- Chlorhexidine Gluconate12 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.
Aaron D. Mortensen among 2,020 dentist records in Colorado
Aaron D. Mortensen, D.M.D is one of 2,020 dentist records with a practice address in Colorado. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 40% of them.
- NPI issued2009 · 40% of these records are older, 57% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2009 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 dentist records list a practice address in Longmont
They are 35 of the 2,381 NPPES records with a practice address in Longmont, and 2,020 dentist records in Colorado.
All 2,020 in Colorado → Every provider in Longmont → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Paul Abbey, DDSLongmont, CO 805011891768495
- Frank Becvar, DDSLongmont, CO 805011417965344
- Jill Biles, D.D.S.Longmont, CO 805011225151798
- Ryan Bond, DMDLongmont, CO 805011902191737
- Wayne Castle, D.D.S.Longmont, CO 805011174749550
- Julie Devlin, DDSLongmont, CO 805011417006875
- Jack Dunn, DDSLongmont, CO 805011467464461
- Michael Kellogg, DDSLongmont, CO 805011376767681
Common questions
What is Aaron D. Mortensen, D.M.D's NPI number?
Aaron D. Mortensen, D.M.D's National Provider Identifier (NPI) is 1861726978, issued on Sep 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Aaron D. Mortensen, D.M.D located?
The NPPES record lists a practice address at 1750 Mountain View Ave, Longmont, CO, 80501. Phone: (303) 678-7783. Providers update this record themselves, so call before visiting.
How can I verify Aaron D. Mortensen, D.M.D's license?
NPPES lists Colorado license number 9994, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Aaron D. Mortensen, D.M.D prescribe under Medicare Part D?
In 2024, Aaron D. Mortensen, D.M.D had 77 Medicare Part D claims for 48 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions 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.