NPPES file of Aug 9, 2026

Jonathan David Sierk, DDS

Pediatric Dentistry · Highlands Ranch, CO

Jonathan David Sierk, DDS is a pediatric dentistry with a practice address in Highlands Ranch, Colorado, and NPI 1093882870, issued on Nov 29, 2006. Check the license (Colorado 8670, 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
1093882870
Name
Jonathan David Sierk
Credential
DDS
Primary taxonomy
Pediatric Dentistry 1223P0221X
License numbers
8670 CO
08045 IA
Self-reported in NPPES; status is on the state search
Practice location
6660 Timberline RD, Highlands Ranch, CO 80130
Phone
(303) 865-4066
Enumerated
Nov 29, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(303) 865-4067
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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8 nearest pediatric dentistry records → All 259 in Colorado → Look up another NPI →

Also registered at 6660 Timberline RD

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

  1. Helen Delapp, DDSGeneral Practice Dentistry1467449736
  2. James Delapp, DDSGeneral Practice Dentistry1710974894
  3. Matt Franzino, PTASpecialist1770022030
  4. Dennis Martin, PTPhysical Therapist1194773846
  5. Sarah Parsons, DDSDentist1972824654
  6. Tyler Ready, DPTPhysical Therapist1750676771

Verify Jonathan David Sierk 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 8670    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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Industry payments in 2024: $65.87

1 payment: food and beverage; the largest payer was Biolase MG LLC. The 2,607 providers of this specialty with any payment received $434.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jonathan Sierk$65.87
  2. Specialty average$434.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Jonathan David Sierk among 259 pediatric dentistry records in Colorado

Jonathan David Sierk, DDS is one of 259 pediatric dentistry records with a practice address in Colorado. 25% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 72% newer
  • In a Medicare fileYes · 25% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0221X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Dentistry providers in Colorado

There are 259 pediatric dentistry records in Colorado.

All 259 in Colorado → Every provider in Highlands Ranch → Pediatric Dentistry nationwide →

The 8 pediatric dentistry records with the nearest ZIP codes

  1. Lisa Fox, DDSHighlands Ranch, CO 801291427078435
  2. Rebecca Goldberg, DDSHighlands Ranch, CO 801291063723252
  3. Kathleen Waguespack, DMDHighlands Ranch, CO 801291215048806
  4. Patrick Wilson, DMDHighlands Ranch, CO 801291104086438
  5. Aaron Yashar, D.M.D.Highlands Ranch, CO 801291073854964
  6. Courtney College, DDS, MSLittleton, CO 801271811940943
  7. Allison Davis, DDSLittleton, CO 801271053851485
  8. Ira Moyer, D.D.S.Littleton, CO 801271245205277

Common questions

What is Jonathan David Sierk, DDS's NPI number?

Jonathan David Sierk, DDS's National Provider Identifier (NPI) is 1093882870, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan David Sierk, DDS located?

The NPPES record lists a practice address at 6660 Timberline RD, Highlands Ranch, CO, 80130. Phone: (303) 865-4066. Providers update this record themselves, so call before visiting.

How can I verify Jonathan David Sierk, DDS's license?

NPPES lists Colorado license number 8670, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.