John O'Brien, D.D.S.
Dentist · Tinley Park, IL
John O'Brien, D.D.S. is a dentist with a practice address in Tinley Park, Illinois, and NPI 1568639854, issued on May 15, 2008. Check the license (Illinois 019-020128, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John O'Brien
- Credential
- D.D.S.
- Primary taxonomy
- Dentist 122300000X
- License number
- 019-020128 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7602 Claremont Dr, Tinley Park, IL 60477
- Phone
- (708) 601-1345
- Enumerated
- May 15, 2008
- Record last updated
- May 15, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Verify John O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019-020128Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average dentist in 2024
55 Medicare Part D claims for 41 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin38 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.
John O'Brien among 4,522 dentist records in Illinois
John O'Brien, D.D.S. is one of 4,522 dentist 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 2008, is newer than 38% of them.
- NPI issued2008 · 38% of these records are older, 54% 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 updated2008 · 74% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 dentist records list a practice address in Tinley Park
They are 17 of the 1,149 NPPES records with a practice address in Tinley Park, and 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Tinley Park → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- John Athos, DDSTinley Park, IL 604771811932106
- Michael Golk, DMDTinley Park, IL 604771528626975
- Edmond Hanley, D.D.S.Tinley Park, IL 604771548340151
- Shellie HardenTinley Park, IL 604771861628976
- Emily Karamagianis, D.D.S.Tinley Park, IL 604771770620320
- James Kogionis, DDSTinley Park, IL 604771932234069
- Tamara Marjan, DMDTinley Park, IL 604771841783651
- Robert McGonigle, DDSTinley Park, IL 604771245493261
Common questions
What is John O'Brien, D.D.S.'s NPI number?
John O'Brien, D.D.S.'s National Provider Identifier (NPI) is 1568639854, issued on May 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John O'Brien, D.D.S. located?
The NPPES record lists a practice address at 7602 Claremont Dr, Tinley Park, IL, 60477. Phone: (708) 601-1345. Providers update this record themselves, so call before visiting.
How can I verify John O'Brien, D.D.S.'s license?
NPPES lists Illinois license number 019-020128, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does John O'Brien, D.D.S. prescribe under Medicare Part D?
In 2024, John O'Brien, D.D.S. had 55 Medicare Part D claims for 41 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.