Ryan Johnson, DMD
Periodontics · Oak Brook, IL
Ryan Johnson, DMD is a periodontics with a practice address in Oak Brook, Illinois, and NPI 1447924808, issued on Aug 9, 2021. Check the license (Illinois 021.003528, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ryan Johnson
- Credential
- DMD
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 021.003528 IL
Self-reported in NPPES; status is on the state search - Practice location
- 120 Oakbrook Ctr Ste 714, Oak Brook, IL 60523
- Phone
- (630) 654-3331
- Enumerated
- Aug 9, 2021
- Record last updated
- Jul 10, 2026
- Fax
- (630) 954-2910
- Entity
- Type 1 · individual
8 nearest periodontics records → All 214 in Illinois → Look up another NPI →
Also registered at 120 Oakbrook Ctr Ste 714
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Benjamin Schwabe, D.D.S.Dentist1235685801
Verify Ryan Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 021.003528Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average periodontics in 2024
165 Medicare Part D claims for 62 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Chlorhexidine Gluconate57 claims
- Amoxicillin40 claims
- Amoxicillin-Clavulanate Potass19 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.
Industry payments in 2024: $79.51
1 payment: food and beverage; the largest payer was BioHorizons Implant Systems Inc. The 2,966 providers of this specialty with any payment received $1,338.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ryan Johnson among 214 periodontics records in Illinois
Ryan Johnson, DMD is one of 214 periodontics records with a practice address in Illinois. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 96% of them.
- NPI issued2021 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2026 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in Illinois
There are 214 periodontics records in Illinois.
All 214 in Illinois → Every provider in Oak Brook → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Gina Gruendeman-Gordon, DDSOak Brook, IL 605231730356270
- Nolen Levine, D.D.S.Oak Brook, IL 605231497933261
- Eugene Buksa, DDS, MSCountryside, IL 605251558546390
- Michelle Jennings, DDSCountryside, IL 605251205054541
- Amer Atassi, D.M.DBurr Ridge, IL 605271689059297
- Justin Villanueva, DMD, MSD, DHLWoodridge, IL 605171174076236
- Robert Poulsom, D.D.S., M.S., J.D.Downers Grove, IL 605161689744054
- Yahya Sayed Suliman Atassi, DDS, MSDowners Grove, IL 605161639956758
Common questions
What is Ryan Johnson, DMD's NPI number?
Ryan Johnson, DMD's National Provider Identifier (NPI) is 1447924808, issued on Aug 9, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Johnson, DMD located?
The NPPES record lists a practice address at 120 Oakbrook Ctr Ste 714, Oak Brook, IL, 60523. Phone: (630) 654-3331. Providers update this record themselves, so call before visiting.
How can I verify Ryan Johnson, DMD's license?
NPPES lists Illinois license number 021.003528, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Ryan Johnson, DMD prescribe under Medicare Part D?
In 2024, Ryan Johnson, DMD had 165 Medicare Part D claims for 62 beneficiaries; the average among periodontics prescribers was 277. 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.