Colleen L. Allen, CRNP
- Part D claims, 2024
- 4,107
- Hospital affiliations
- 2
- Industry payments
- $371
- Medical groups
- 2
- State licenses
- 2
- Practice address
- 106 Bow Street, Elkton, MD 21921
- Practice phone
- Call (410) 392-7009
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Colleen Allen's professional email, personal email and mobile number
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Colleen L. Allen is a family nurse practitioner in Elkton, Maryland
Colleen Allen practices at ChristianaCare Union Hospital in Elkton, Maryland, part of ChristianaCare.
Colleen Allen's NPI, 1255738688, was assigned on December 1, 2014. Colleen Allen holds Maryland license R136818.
- NPI
- 1255738688NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224365143
- NPI enumeration date
- December 1, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 392-7009
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Colleen L. Allen practices at ChristianaCare Union Hospital in Elkton, Maryland
Colleen Allen's primary practice is ChristianaCare Union Hospital, at 106 Bow Street, Elkton, MD 21921 in Cecil County. The practice phone is (410) 392-7009.
- ChristianaCare Union Hospital106 Bow Street, Elkton, MD 21921 · Cecil CountyPhone(410) 392-7009
Source: Dmand AI Affiliation Data
Colleen L. Allen is affiliated with 3 sites of care and 2 medical groups
Colleen Allen's primary practice is ChristianaCare Union Hospital in Elkton, Maryland, part of ChristianaCare. Colleen Allen is also affiliated with Christiana Hospital. The medical group on file is ExpressCare Urgent Care Centers. Dmand AI also links Colleen Allen to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Colleen L. Allen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Colleen Allen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Union Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across ChristianaCare and 6.2K+ hospitals, with verified contacts in the same login.
Colleen L. Allen is one of 3,917 family nurse practitioners in Maryland
Family is Colleen Allen's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Dmand AI has Colleen Allen's licenses on file in 2 states: Maryland and Delaware.
Specialties and state licenses
- Family nurse practitioner, MarylandPrimary
- Delaware license
Family nurse practitioners near Colleen Allen
Counts of family nurse practitioners 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
Colleen L. Allen's patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Colleen Allen's median patient age at 77, with 34% women.
Colleen Allen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women34%
- Men62%
Source: Dmand AI Patient Panel Data
Colleen L. Allen wrote 4,107 Medicare Part D claims in 2024
In 2024, Colleen Allen wrote 4,107 Medicare Part D claims for 546 patients. 83% of them were for generic drugs.
Colleen Allen's Part D claims by kind of drug, 2024
- Generic3,422 claims83%
- Brand-name685 claims17%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Colleen L. Allen takes part in Medicare
Colleen Allen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Colleen L. Allen received $371 in industry payments in 2025
CMS Open Payments shows 21 general payments to Colleen Allen from 10 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $83.
Companies that paid Colleen Allen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Colleen L. Allen'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Colleen L. Allen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Colleen L. Allen's NPI number?
Colleen L. Allen's NPI number is 1255738688. It was assigned on December 1, 2014, and it is active in the NPI Registry.
What does Colleen L. Allen specialize in?
Colleen L. Allen is a family nurse practitioner in Elkton, Maryland. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Colleen L. Allen practice?
Colleen Allen practices at 106 Bow Street, Elkton, MD 21921. Colleen Allen's primary practice is ChristianaCare Union Hospital in Elkton, Maryland, part of ChristianaCare. Dmand AI also links Colleen Allen to 1 group practice or clinic and 1 medical group.
What is Colleen L. Allen's office phone number?
The practice phone on file for Colleen Allen is (410) 392-7009.
What is Colleen L. Allen's medical license number?
Colleen Allen holds Maryland license R136818, one of the licenses on file in 2 states.
Which states has Colleen L. Allen been licensed in?
Dmand AI has state licenses on file for Colleen Allen in Maryland and Delaware.
Which hospitals is Colleen L. Allen affiliated with?
Colleen Allen practices at ChristianaCare Union Hospital in Elkton, Maryland. Colleen Allen is also affiliated with Christiana Hospital.
What medical group is Colleen L. Allen part of?
Colleen Allen is linked to ExpressCare Urgent Care Centers. Dmand AI links Colleen Allen to 1 more medical group.
Does Colleen L. Allen accept Medicare?
Yes. CMS lists Colleen Allen as accepting Medicare assignment.
Has Colleen L. Allen received payments from drug or device companies?
CMS Open Payments shows $371 in general payments to Colleen Allen from 10 companies from 2025 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Colleen L. Allen been practicing?
Colleen Allen graduated from medical school in 2014, 12 years ago.
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