Doctor profile · Federal record
Dr. William Brennan, D.D.S.
Dentist · Downers Grove, IL
- NPI 1265501175
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5133 Washington St, Suite 4
Downers Grove, IL 605154788
(630) 969-4645 - Mailing address
-
1516 S Wabash Ave, #602
Chicago, IL 606052903
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Specialty taxonomy
- 122300000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265501175. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$74
Transactions
4
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| BioHorizons Implant Systems Inc. | 4 | $73.56 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
19
Patients
0
Total drug cost
$222
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Valacyclovir (Valacyclovir Hcl) | Brand | 19 | 0 | $222 |
Frequently asked questions
What is Dr. William Brennan's medical specialty?
Dr. William Brennan practices Dentist in Downers Grove, IL.
Where does Dr. William Brennan practice?
Dr. William Brennan practices at 5133 Washington St, Downers Grove, IL 605154788. Office phone: 6309694645.
What is Dr. William Brennan's NPI?
Dr. William Brennan's National Provider Identifier (NPI) is 1265501175, issued by NPPES.