Dr. Andrew Ellefson, MD
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $26
- Medical groups
- 2
- State licenses
- 2
- Practice address
- 200 Hygeia Dr, Newark, DE 19713
- Practice phone
- Call (302) 428-2522
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare Primary Care at Middletown East
Newark, Delaware
Find Dr. Ellefson'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. Andrew Ellefson is a pediatrician in Newark, Delaware
Dr. Ellefson practices at ChristianaCare Primary Care at Middletown East in Newark, Delaware.
Dr. Ellefson's NPI, 1972796225, was assigned on August 21, 2007. Dr. Ellefson holds Delaware license C1-0008424.
- NPI
- 1972796225NPI Registry (opens in a new tab)
- NPI enumeration date
- August 21, 2007
- NPI status
- Active
- Practice phone
- (302) 428-2522
- 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 Practice Data
Dr. Andrew Ellefson practices at ChristianaCare Primary Care at Middletown East in Newark, Delaware
Dr. Ellefson's primary practice is ChristianaCare Primary Care at Middletown East, at 200 Hygeia Dr, Newark, DE 19713 in New Castle County. The practice phone is (302) 428-2522.
- ChristianaCare Primary Care at Middletown East200 Hygeia Dr, Newark, DE 19713 · New Castle CountyPhone(302) 428-2522
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Andrew Ellefson is affiliated with 2 sites of care and 2 medical groups
Dr. Ellefson's primary practice is ChristianaCare Primary Care at Middletown East in Newark, Delaware. Dr. Ellefson is also affiliated with Nemours Children's Hospital, Delaware. The medical group on file is Nemours Children's Hospital, Delaware. Dmand AI also links Dr. Ellefson to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Andrew Ellefson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ellefson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Primary Care at Middletown East | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew Ellefson is one of 283 pediatricians in Delaware
Pediatrics is Dr. Ellefson's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dmand AI has Dr. Ellefson's licenses on file in 2 states: Delaware and Pennsylvania.
Specialties and state licenses
- Pediatrics, DelawarePrimary
- Pennsylvania license
Pediatricians near Dr. Ellefson
Counts of pediatricians 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. Andrew Ellefson's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Ellefson's median patient age at 35, with 71% women.
Dr. Ellefson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women71%
- Men29%
Source: Dmand AI Patient Panel Data
Dr. Andrew Ellefson has 2 publications on record
Dmand AI links 2 papers to Dr. Ellefson, published from 2015 to 2023. Dr. Ellefson's most frequent co-authors are David A. Paul, MD and Robert G. Locke, DO.
Dr. Ellefson's most frequent co-authors
Recent publications by Dr. Ellefson
J Perinatol
See who Dr. Ellefson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ellefson works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Andrew Ellefson received $26 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Ellefson from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Chiesi USA, Inc. paid the most, $26.
Companies that paid Dr. Ellefson the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Andrew Ellefson'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Andrew Ellefson
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. Andrew Ellefson's NPI number?
Dr. Andrew Ellefson's NPI number is 1972796225. It was assigned on August 21, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Ellefson?
Dr. Andrew Ellefson is a pediatrician in Newark, Delaware. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Andrew Ellefson practice?
Dr. Ellefson practices at 200 Hygeia Dr, Newark, DE 19713. Dr. Ellefson's primary practice is ChristianaCare Primary Care at Middletown East in Newark, Delaware. Dmand AI also links Dr. Ellefson to 1 medical group.
What is Dr. Andrew Ellefson's office phone number?
The practice phone on file for Dr. Ellefson is (302) 428-2522.
What is Dr. Andrew Ellefson's medical license number?
Dr. Ellefson holds Delaware license C1-0008424, one of the licenses on file in 2 states.
Which states has Dr. Andrew Ellefson been licensed in?
Dmand AI has state licenses on file for Dr. Ellefson in Delaware and Pennsylvania.
Which hospitals is Dr. Andrew Ellefson affiliated with?
Dr. Ellefson is affiliated with Nemours Children's Hospital, Delaware.
What medical group is Dr. Andrew Ellefson part of?
Dr. Ellefson is linked to Nemours Children's Hospital, Delaware. Dmand AI links Dr. Ellefson to 1 more medical group.
Has Dr. Andrew Ellefson received payments from drug or device companies?
CMS Open Payments shows $26 in general payments to Dr. Ellefson from 1 company from 2024 to 2024. The largest total came from Chiesi USA, Inc.
How long has Dr. Andrew Ellefson been practicing?
Dr. Ellefson's NPI was assigned in 2007.
Does Dr. Andrew Ellefson do research?
Dmand AI links 2 publications to Dr. Ellefson, published from 2015 to 2023.
Who does Dr. Andrew Ellefson publish with?
Dr. Ellefson's most frequent co-authors are David A. Paul, MD (2 shared papers) and Robert G. Locke, DO (1 shared paper).
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