NPPES file of Aug 9, 2026

Nick Albert Geroulis, DDS

General Practice Dentistry · Berwyn, IL

Nick Albert Geroulis, DDS is a general practice dentistry with a practice address in Berwyn, Illinois, and NPI 1609081421, issued on May 14, 2007. 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
1609081421
Name
Nick Albert Geroulis
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
Practice location
3340 S Oak Park Ave, Berwyn, IL 60402
Phone
(708) 484-4422
Enumerated
May 14, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(708) 484-4427
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.
Download card Updates feed

8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →

Verify Nick Albert Geroulis 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
Find the Illinois 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

18% more Medicare Part D claims than the average general practice dentistry in 2024

98 Medicare Part D claims for 32 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Nick Geroulis98
  2. Specialty average83

Most prescribed

  1. Chlorhexidine Gluconate41 claims
  2. Amoxicillin15 claims
  3. Penicillin V Potassium12 claims
  4. Valacyclovir11 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.

Nick Albert Geroulis among 5,276 general practice dentistry records in Illinois

Nick Albert Geroulis, 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 2007, is newer than 32% of them.

  • NPI issued2007 · 32% of these records are older, 43% 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).

26 general practice dentistry records list a practice address in Berwyn

They are 26 of the 1,031 NPPES records with a practice address in Berwyn, and 5,276 general practice dentistry records in Illinois.

All 5,276 in Illinois → Every provider in Berwyn → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Gary Clemens, D.D.S.Berwyn, IL 604021982798336
  2. James Discipio, D.D.S., M.S.Berwyn, IL 604021639239866
  3. Ralph Erdmann, D.D.S.Berwyn, IL 604021821037466
  4. Carol Everett, D.D.S.Berwyn, IL 604021154464287
  5. Diane Garrison, DDSBerwyn, IL 604021265588503
  6. Susan Klyber, DDSBerwyn, IL 604021306911128
  7. Robert Matias, D.D.S.Berwyn, IL 604021316912181
  8. Daniel Maturo, D.D.S.Stickney, IL 604021720143902

Common questions

What is Nick Albert Geroulis, DDS's NPI number?

Nick Albert Geroulis, DDS's National Provider Identifier (NPI) is 1609081421, issued on May 14, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Nick Albert Geroulis, DDS located?

The NPPES record lists a practice address at 3340 S Oak Park Ave, Berwyn, IL, 60402. Phone: (708) 484-4422. Providers update this record themselves, so call before visiting.

How can I verify Nick Albert Geroulis, DDS's license?

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

How much does Nick Albert Geroulis, DDS prescribe under Medicare Part D?

In 2024, Nick Albert Geroulis, DDS had 98 Medicare Part D claims for 32 beneficiaries; 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.

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.