NPPES file of Aug 9, 2026

Robert Collier Clay, DDS

General Practice Dentistry · Palos Heights, IL

Robert Collier Clay, DDS is a general practice dentistry with a practice address in Palos Heights, Illinois, and NPI 1134151954, issued on Jul 6, 2006. Check the license with the Illinois 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
1134151954
Name
Robert Collier Clay
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
Practice location
12500 S Harlem Ave, Palos Heights, IL 60463
Phone
(708) 448-0273
Enumerated
Jul 6, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(708) 448-0274
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 12500 S Harlem Ave

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

  1. Stephen Siefferman, DDSGeneral Practice Dentistry1780755819

Verify Robert Collier Clay in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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
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83% fewer Medicare Part D claims than the average general practice dentistry in 2024

14 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Robert Clay14
  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.

Robert Collier Clay among 5,276 general practice dentistry records in Illinois

Robert Collier Clay, DDS is one of 5,276 general practice dentistry records with a practice address in Illinois. 64% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 68% newer
  • In a Medicare fileYes · 64% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 75% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

29 general practice dentistry records list a practice address in Palos Heights

They are 29 of the 992 NPPES records with a practice address in Palos Heights, and 5,276 general practice dentistry records in Illinois.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Philip Collins, DDSPalos Heights, IL 604631568534493
  2. Brian Gambla, D.D.S.Palos Heights, IL 604631770614778
  3. Patrick Gannon, D.D.S.Palos Heights, IL 604631093925968
  4. Patricia Gennaro, D.D.S.Palos Heights, IL 604631154472520
  5. Jordan Kaplan, D.D.S.Palos Heights, IL 604631437127156
  6. Kenneth Kehl, D.D.S.Palos Heights, IL 604631588743744
  7. Christian Kubilius, DDSPalos Heights, IL 604631699835058
  8. Steven Nicorata, D.D.S.Palos Heights, IL 604631629147301

Common questions

What is Robert Collier Clay, DDS's NPI number?

Robert Collier Clay, DDS's National Provider Identifier (NPI) is 1134151954, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Collier Clay, DDS located?

The NPPES record lists a practice address at 12500 S Harlem Ave, Palos Heights, IL, 60463. Phone: (708) 448-0273. Providers update this record themselves, so call before visiting.

How can I verify Robert Collier Clay, DDS's license?

Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Robert Collier Clay, DDS prescribe under Medicare Part D?

In 2024, Robert Collier Clay, DDS had 14 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.