NPPES file of Aug 9, 2026

Thomas Spellman, DDS

General Practice Dentistry · Westminster, CO

Thomas Spellman, DDS is a general practice dentistry with a practice address in Westminster, Colorado, and NPI 1013463983, issued on Aug 30, 2016. Check the license (Colorado 203821, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1013463983
Name
Thomas Spellman
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License numbers
203821 CO
2297 ND
Self-reported in NPPES; status is on the state search
Practice location
2761 W 120TH Ave Ste 220, Westminster, CO 80234
Phone
(303) 457-2266
Enumerated
Aug 30, 2016
Record last updated
Jun 19, 2023
Fax
(303) 457-0464
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2761 W 120TH Ave Ste 220

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Stacey Nygaard Spellman, DDSDentist1023469723

Verify Thomas Spellman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license 203821
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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84% fewer Medicare Part D claims than the average general practice dentistry in 2024

13 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Thomas Spellman13
  2. Specialty average83

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.

Thomas Spellman among 2,488 general practice dentistry records in Colorado

Thomas Spellman, DDS is one of 2,488 general practice dentistry records with a practice address in Colorado. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 76% of them.

  • NPI issued2016 · 76% of these records are older, 22% newer
  • In a Medicare fileYes · 59% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2023 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

52 general practice dentistry records list a practice address in Westminster

They are 52 of the 2,492 NPPES records with a practice address in Westminster, and 2,488 general practice dentistry records in Colorado.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Alexander Acevedo, D.D.S.Westminster, CO 802341013131093
  2. Chae Choi, D.D.S.Westminster, CO 802341306062088
  3. Tristan Collins, DDSNorthglenn, CO 802341124467766
  4. Geoffrey Dibert, DDSWestminster, CO 802341841598703
  5. Melissa Hatzidakis, D.D.S.Westminster, CO 802341760604458
  6. Jiwon Jung, D.D.SWestminster, CO 802341356571442
  7. Charles Marx, D.D.S.Northglenn, CO 802341780693978
  8. Jenna Nicholson, DDSWestminster, CO 802341770804098

Common questions

What is Thomas Spellman, DDS's NPI number?

Thomas Spellman, DDS's National Provider Identifier (NPI) is 1013463983, issued on Aug 30, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Spellman, DDS located?

The NPPES record lists a practice address at 2761 W 120TH Ave Ste 220, Westminster, CO, 80234. Phone: (303) 457-2266. Providers update this record themselves, so call before visiting.

How can I verify Thomas Spellman, DDS's license?

NPPES lists Colorado license number 203821, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.

How much does Thomas Spellman, DDS prescribe under Medicare Part D?

In 2024, Thomas Spellman, DDS had 13 Medicare Part D claims; the average among general practice dentistry prescribers was 83. 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.