Francis T. Tan, DDS
General Practice Dentistry · Darien, IL
Francis T. Tan, DDS is a general practice dentistry with a practice address in Darien, Illinois, and NPI 1942460233, issued on Jun 11, 2008. Check the license (Illinois 019027660, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Francis T. Tan
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 019027660 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7339 Cass Ave, Darien, IL 60561
- Phone
- (331) 481-9302
- Enumerated
- Jun 11, 2008
- Record last updated
- Feb 1, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (331) 684-0080
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →
Also registered at 7339 Cass Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Tan, DDSGeneral Practice Dentistry1265692081
Verify Francis T. Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019027660Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average general practice dentistry in 2024
39 Medicare Part D claims for 35 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin25 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: $489.00
2 payments; by number, the most common kind was food and beverage; the largest payer was Dentsply Sirona Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
Francis T. Tan among 5,276 general practice dentistry records in Illinois
Francis T. Tan, 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 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 36% 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 updated2017 · 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).
14 general practice dentistry records list a practice address in Darien
They are 14 of the 389 NPPES records with a practice address in Darien, and 5,276 general practice dentistry records in Illinois.
All 5,276 in Illinois → Every provider in Darien → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Peter Blazek, D.D.S.Darien, IL 605611669597340
- Grace Castro, DMDDarien, IL 605611619229358
- Robert Falta, D.D.S.Darien, IL 605611649489543
- Patrick Fleming, D.D.S.Darien, IL 605611043349350
- Polly Gallavin, DMDDarien, IL 605611740703669
- Lynn Kholoki, DDSDarien, IL 605611063220085
- Robert Klafeta, D.D.S.Darien, IL 605611306015375
- Kristyna Konior, DMDDarien, IL 605611174920268
Common questions
What is Francis T. Tan, DDS's NPI number?
Francis T. Tan, DDS's National Provider Identifier (NPI) is 1942460233, issued on Jun 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Francis T. Tan, DDS located?
The NPPES record lists a practice address at 7339 Cass Ave, Darien, IL, 60561. Phone: (331) 481-9302. Providers update this record themselves, so call before visiting.
How can I verify Francis T. Tan, DDS's license?
NPPES lists Illinois license number 019027660, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Francis T. Tan, DDS prescribe under Medicare Part D?
In 2024, Francis T. Tan, DDS had 39 Medicare Part D claims for 35 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.
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.