James F. Gianakakis, D.D.S.,M.S.
Endodontics · Oak Brook, IL
James F. Gianakakis, D.D.S.,M.S. is an endodontics with a practice address in Oak Brook, Illinois, and NPI 1841522612, issued on Feb 4, 2010. Check the license (Illinois 019021370, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James F. Gianakakis
- Credential
- D.D.S.,M.S.
- Primary taxonomy
- Endodontics 1223E0200X
- License number
- 019021370 IL
Self-reported in NPPES; status is on the state search - Practice location
- 120 Oakbrook Ctr, Oak Brook, IL 60523
- Phone
- (630) 654-3331
- Enumerated
- Feb 4, 2010
- Record last updated
- Feb 5, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (630) 954-2910
- Entity
- Type 1 · individual
8 nearest endodontics records → All 214 in Illinois → Look up another NPI →
Also registered at 120 Oakbrook Ctr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Madeline Bernbom, PSY.D.Clinical Psychologist1629126065
- Jennifer Catalfio, PA-CMedical Physician Assistant1386953057
- Jag Chawla, D.D.SOrthodontics and Dentofacial Orthopedics Dentistry1306065073
- Ann Collier, MDAllergy & Immunology Physician1891863411
- Cecilia Guzman, L.C.P.C.Professional Counselor1649320946
- Jeffrey Hembrough, D.D.S.,M.S.Endodontics1346572120
Verify James F. Gianakakis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019021370Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average endodontics in 2024
82 Medicare Part D claims for 72 beneficiaries, against an average of 121 among the 4,119 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin63 claims
- Clindamycin Hcl17 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.
James F. Gianakakis among 214 endodontics records in Illinois
James F. Gianakakis, D.D.S.,M.S. is one of 214 endodontics 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 24% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2010 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223E0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endodontics providers in Illinois
There are 214 endodontics records in Illinois.
All 214 in Illinois → Every provider in Oak Brook → Endodontics nationwide →
The 8 endodontics records with the nearest ZIP codes
- Jeffrey Hembrough, D.D.S.,M.S.Oak Brook, IL 605231346572120
- Mark Palo, D.D.S.,M.S.Oak Brook, IL 605231003148891
- Vince Penesis, D.D.S.Oak Brook, IL 605231992037782
- Richard Kohn, DDS MSCountryside, IL 605251336315274
- Richard Pacelli, DDSLa Grange, IL 605251972685055
- Jiten PatelHinsdale, IL 605211457413650
- Martin RyanHinsdale, IL 605211124722384
- Gail Tischke, DDS, MSWillowbrook, IL 605271790045490
Common questions
What is James F. Gianakakis, D.D.S.,M.S.'s NPI number?
James F. Gianakakis, D.D.S.,M.S.'s National Provider Identifier (NPI) is 1841522612, issued on Feb 4, 2010. An NPI identifies a provider in billing; it is not a license.
Where is James F. Gianakakis, D.D.S.,M.S. located?
The NPPES record lists a practice address at 120 Oakbrook Ctr, Oak Brook, IL, 60523. Phone: (630) 654-3331. Providers update this record themselves, so call before visiting.
How can I verify James F. Gianakakis, D.D.S.,M.S.'s license?
NPPES lists Illinois license number 019021370, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does James F. Gianakakis, D.D.S.,M.S. prescribe under Medicare Part D?
In 2024, James F. Gianakakis, D.D.S.,M.S. had 82 Medicare Part D claims for 72 beneficiaries; the average among endodontics prescribers was 121. 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.