Theodore John Constantine, DDS
Dentist · Northbrook, IL
Theodore John Constantine, DDS is a dentist with a practice address in Northbrook, Illinois, and NPI 1982753182, issued on Jan 9, 2007. Check the license (Illinois 019021638, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theodore John Constantine
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 019021638 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1501 Shermer RD, Northbrook, IL 60062
- Phone
- (847) 272-6466
- Enumerated
- Jan 9, 2007
- Record last updated
- Dec 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (847) 272-1487
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Also registered at 1501 Shermer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathan Constantine, DMDDentist1508696477
Verify Theodore John Constantine in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019021638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average dentist in 2024
58 Medicare Part D claims for 43 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin48 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: $32.98
3 payments; by number, the most common kind was food and beverage; the largest payer was Ultradent Products Inc. The 31,974 providers of this specialty with any payment received $540.36 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.
Theodore John Constantine among 4,522 dentist records in Illinois
Theodore John Constantine, DDS 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 2007, is newer than 19% of them.
- NPI issued2007 · 19% of these records are older, 62% 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 updated2014 · 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).
19 dentist records list a practice address in Northbrook
They are 19 of the 2,226 NPPES records with a practice address in Northbrook, and 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Northbrook → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Mayya Bakman, DDSNorthbrook, IL 600621124224076
- Michael Camino, D.D.S.Northbrook, IL 600621104070176
- Kyint Chwa, BDS DDS MSNorthbrook, IL 600621659487718
- Maina Diment, DDSNorthbrook, IL 600621518028570
- Thomas Downey, DDSNorthbrook, IL 600621588639132
- John Formeller, DDSNorthbrook, IL 600621952455107
- Kimberly Garwacki, D.D.S.Northbrook, IL 600621457562217
- Arnold Gorchow, DDSNorthbrook, IL 600621154400638
Common questions
What is Theodore John Constantine, DDS's NPI number?
Theodore John Constantine, DDS's National Provider Identifier (NPI) is 1982753182, issued on Jan 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Theodore John Constantine, DDS located?
The NPPES record lists a practice address at 1501 Shermer RD, Northbrook, IL, 60062. Phone: (847) 272-6466. Providers update this record themselves, so call before visiting.
How can I verify Theodore John Constantine, DDS's license?
NPPES lists Illinois license number 019021638, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Theodore John Constantine, DDS prescribe under Medicare Part D?
In 2024, Theodore John Constantine, DDS had 58 Medicare Part D claims for 43 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.