Ethan Frederick Keller, MD
Internal Medicine Physician · Milford, DE
Ethan Frederick Keller, MD is an internal medicine physician with a practice address in Milford, Delaware, and NPI 1093403420, issued on Apr 25, 2023. Check the license (Delaware C7-0018190, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Ethan Frederick Keller
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C7-0018190 DE
Self-reported in NPPES; status is on the state search - Practice location
- 804 N Dupont Blvd, Milford, DE 19963
- Phone
- (302) 725-3557
- Enumerated
- Apr 25, 2023
- Record last updated
- May 18, 2023
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 600 in Delaware → Look up another NPI →
Also registered at 804 N Dupont Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shahryar Chaudhry, MDInternal Medicine Physician1982498473
- Enrique Cortez Bernal, MDInternal Medicine Physician1477202331
Verify Ethan Frederick Keller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C7-0018190Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
235 Medicare Part D claims for 87 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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: $22.67
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Ethan Frederick Keller among 600 internal medicine physician records in Delaware
Ethan Frederick Keller, MD is one of 600 internal medicine physician records with a practice address in Delaware. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 89% of them.
- NPI issued2023 · 89% of these records are older, 6% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
76 internal medicine physician records list a practice address in Milford
They are 76 of the 713 NPPES records with a practice address in Milford, and 600 internal medicine physician records in Delaware.
All 600 in Delaware → Every provider in Milford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ben Hur Aguilar, M.D.Milford, DE 199631740475649
- Joseph Deutsch, M.D.Milford, DE 199631568596039
- Cesar Diaz-Marquez, M.D.Milford, DE 199631699208694
- Martin Golding, M.D.Milford, DE 199631558366633
- Joshua McAfee, M.DMilford, DE 199631972856250
- Adrian Morris, MDMilford, DE 199631447326327
- Robert Rolfes, M.D.Milford, DE 199631306864764
- Muhammad Tahir, MDMilford, DE 199631699146928
Common questions
What is Ethan Frederick Keller, MD's NPI number?
Ethan Frederick Keller, MD's National Provider Identifier (NPI) is 1093403420, issued on Apr 25, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Ethan Frederick Keller, MD located?
The NPPES record lists a practice address at 804 N Dupont Blvd, Milford, DE, 19963. Phone: (302) 725-3557. Providers update this record themselves, so call before visiting.
How can I verify Ethan Frederick Keller, MD's license?
NPPES lists Delaware license number C7-0018190, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ethan Frederick Keller, MD prescribe under Medicare Part D?
In 2024, Ethan Frederick Keller, MD had 235 Medicare Part D claims for 87 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.