Dr. Ethan Frederick Keller, MD
- Part D claims, 2024
- 235
- Hospital affiliations
- 1
- Industry payments
- $96
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 640 S State Street, Dover, DE 19901
- Practice phone
- Call (302) 744-7001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Keller's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ethan Frederick Keller is an internist in Dover, Delaware
Dr. Keller practices at Bayhealth Hospital, Kent Campus in Dover, Delaware, part of Bayhealth Medical Center.
Dr. Keller's NPI, 1093403420, was assigned on April 25, 2023. Dr. Keller holds Delaware license C7-0018190.
- NPI
- 1093403420NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658736525
- NPI enumeration date
- April 25, 2023
- NPI status
- Active
- Practice phone
- (302) 744-7001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ethan Frederick Keller practices at Bayhealth Hospital, Kent Campus in Dover, Delaware
Dr. Keller's primary practice is Bayhealth Hospital, Kent Campus, at 640 S State Street, Dover, DE 19901 in Kent County. The practice phone is (302) 744-7001.
- Bayhealth Hospital, Kent Campus640 S State Street, Dover, DE 19901 · Kent CountyPhone(302) 744-7001
Source: Dmand AI Affiliation Data
Dr. Ethan Frederick Keller is affiliated with 1 site of care
Dr. Keller's primary practice is Bayhealth Hospital, Kent Campus in Dover, Delaware, part of Bayhealth Medical Center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ethan Frederick Keller's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keller practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bayhealth Hospital, Kent Campus | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Bayhealth Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ethan Frederick Keller is one of 615 internists in Delaware
Internal medicine is Dr. Keller's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Keller is licensed in Delaware.
Specialties and state licenses
- Internal medicine, DelawarePrimary
Internists near Dr. Keller
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ethan Frederick Keller's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Keller's median patient age at 71, with 68% women.
Dr. Keller's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women68%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. Ethan Frederick Keller wrote 235 Medicare Part D claims in 2024
In 2024, Dr. Keller wrote 235 Medicare Part D claims for 87 patients. 84% of them were for generic drugs.
Dr. Keller's Part D claims by kind of drug, 2024
- Generic198 claims84%
- Brand-name and other37 claims16%
Drug classes CMS tracks in Dr. Keller's Part D claims, 2024
- Antibiotics9%21 of 235 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ethan Frederick Keller received $96 in industry payments from 2023 to 2024
CMS Open Payments shows 5 general payments to Dr. Keller from 3 drug and device companies from 2023 to 2024. Food and beverage make up the largest share, 100% of the total. Dexcom, Inc. paid the most, $59.
General payments to Dr. Keller by program year, 2023 to 2024
Companies that paid Dr. Keller the most, 2023 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ethan Frederick Keller's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ethan Frederick Keller
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ethan Frederick Keller's NPI number?
Dr. Ethan Frederick Keller's NPI number is 1093403420. It was assigned on April 25, 2023, and it is active in the NPI Registry.
What kind of doctor is Dr. Ethan Frederick Keller?
Dr. Ethan Frederick Keller is an internist in Dover, Delaware. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ethan Frederick Keller practice?
Dr. Keller practices at 640 S State Street, Dover, DE 19901. Dr. Keller's primary practice is Bayhealth Hospital, Kent Campus in Dover, Delaware, part of Bayhealth Medical Center.
What is Dr. Ethan Frederick Keller's office phone number?
The practice phone on file for Dr. Keller is (302) 744-7001.
What is Dr. Ethan Frederick Keller's medical license number?
Dr. Keller holds Delaware license C7-0018190.
Which hospitals is Dr. Ethan Frederick Keller affiliated with?
Dr. Keller practices at Bayhealth Hospital, Kent Campus in Dover, Delaware.
Has Dr. Ethan Frederick Keller received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Dr. Keller from 3 companies from 2023 to 2024. The largest total came from Dexcom, Inc.
How long has Dr. Ethan Frederick Keller been practicing?
Dr. Keller's NPI was assigned in 2023.
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