G. William Keller, D.D.S.
Periodontics · Wilmington, DE
G. William Keller, D.D.S. is a periodontics with a practice address in Wilmington, Delaware, and NPI 1912120676, issued on Apr 11, 2007. Check the license (Delaware G1-0000899, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- G. William Keller
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- G1-0000899 DE
Self-reported in NPPES; status is on the state search - Practice location
- 1110 N Bancroft Pkwy, Wilmington, DE 19805
- Phone
- (302) 652-3586
- Enumerated
- Apr 11, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (302) 652-1174
- Entity
- Type 1 · individual
8 nearest periodontics records → All 16 in Delaware → Look up another NPI →
Also registered at 1110 N Bancroft Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Harold Dehaven, D.D.S.Periodontics1427266105
- Robert DirectorEndodontics1861424590
- Bradford Klassman, D.M.D.Periodontics1053391706
Verify G. William Keller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license G1-0000899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% more Medicare Part D claims than the average periodontics in 2024
357 Medicare Part D claims for 183 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin120 claims
- Ibuprofen106 claims
- Clindamycin Hcl23 claims
- Amoxicillin-Clavulanate Potass21 claims
- Doxycycline Hyclate14 claims
- Chlorhexidine Gluconate13 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: $323.10
4 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. 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.
G. William Keller among 16 periodontics records in Delaware
G. William Keller, D.D.S. is one of 16 periodontics records with a practice address in Delaware. 63% 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 50% of them.
- NPI issued2007 · 50% of these records are older, 19% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2007 · 88% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in Delaware
There are 16 periodontics records in Delaware.
All 16 in Delaware → Every provider in Wilmington → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Kaitlin Chrobocinski, DMDWilmington, DE 198051932666930
- Harold Dehaven, D.D.S.Wilmington, DE 198051427266105
- Bradford Klassman, D.M.D.Wilmington, DE 198051053391706
- Michele Broder, DMDWilmington, DE 198061023036910
- Javier Sanz MolinerWilmington, DE 198061275932006
- Richard Chodroff, D.M.D.Wilmington, DE 198081972527760
- Jeffrey Felzer, D.M.DWilmington, DE 198081134316144
- Louis Martin, DDSWilmington, DE 198081881604346
Common questions
What is G. William Keller, D.D.S.'s NPI number?
G. William Keller, D.D.S.'s National Provider Identifier (NPI) is 1912120676, issued on Apr 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is G. William Keller, D.D.S. located?
The NPPES record lists a practice address at 1110 N Bancroft Pkwy, Wilmington, DE, 19805. Phone: (302) 652-3586. Providers update this record themselves, so call before visiting.
How can I verify G. William Keller, D.D.S.'s license?
NPPES lists Delaware license number G1-0000899, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does G. William Keller, D.D.S. prescribe under Medicare Part D?
In 2024, G. William Keller, D.D.S. had 357 Medicare Part D claims for 183 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.