Dr. Karen J. Lefrak, MD
- Medicare services, 2024
- 291
- Medicare patients, 2024
- 190
- Part D claims, 2024
- 125
- Hospital affiliations
- 1
- Industry payments
- $11
- Practice address
- 4000 Nexus Drive, Wilmington, DE 19803
- Practice phone
- Call (302) 327-5200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare HomeHealth - Wilmington
Home Health Agency - Main Office · Wilmington, Delaware
Find Dr. Lefrak'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. Karen J. Lefrak is an emergency medicine physician in Wilmington, Delaware
Dr. Lefrak practices at ChristianaCare HomeHealth - Wilmington in Wilmington, Delaware.
Dr. Lefrak's NPI, 1972582989, was assigned on January 10, 2006. Dr. Lefrak graduated from Jefferson Medical College of Thomas Jefferson University in 2002. Dr. Lefrak holds Maryland license D0062643.
- NPI
- 1972582989NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890741193
- NPI enumeration date
- January 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (302) 327-5200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen J. Lefrak practices at ChristianaCare HomeHealth - Wilmington in Wilmington, Delaware
Dr. Lefrak's primary practice is ChristianaCare HomeHealth - Wilmington, at 4000 Nexus Drive, Wilmington, DE 19803. The practice phone is (302) 327-5200.
- ChristianaCare HomeHealth - Wilmington4000 Nexus Drive, Wilmington, DE 19803Phone(302) 327-5200
Source: Dmand AI Affiliation Data
Dr. Karen J. Lefrak is affiliated with 2 sites of care and 3 medical groups
Dr. Lefrak's primary practice is ChristianaCare HomeHealth - Wilmington in Wilmington, Delaware. Dr. Lefrak is also affiliated with ChristianaCare Union Hospital. The medical group on file is ChristianaCare Department of Emergency Medicine. Dmand AI also links Dr. Lefrak to 2 more medical groups, each named with a free account. Dr. Lefrak's employer is on file too: a home health agency.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karen J. Lefrak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lefrak practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare HomeHealth - Wilmington | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karen J. Lefrak is one of 235 emergency medicine physicians in Delaware
Emergency medicine is Dr. Lefrak's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Lefrak is licensed in Maryland.
Specialties and state licenses
- Emergency medicine, MarylandPrimary
Emergency medicine physicians near Dr. Lefrak
Counts of emergency medicine physicians 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. Karen J. Lefrak billed Medicare for 291 services in 2024
CMS data shows 291 Medicare services from Dr. Lefrak across 4 procedure codes in 2024, for 190 Medicare patients. Medicare paid $24,165 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lefrak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2992024: 20033%
- Tests and treatments
- 2023: 1042024: 9113%
Dr. Lefrak compared with the Delaware median for emergency medicine physicians, 2024
- Dr. Lefrak
- Delaware median
- Medicare services
- 291vs 43733% below
- Medicare patients
- 190vs 35246% below
- Part D claims
- 26vs 3526% below
Medians across 207 emergency medicine physicians in Delaware with Dmand AI profiles that report each measure.
Dr. Lefrak's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lefrak and other emergency medicine physicians in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen J. Lefrak treated 190 Medicare patients in 2024, average age 72
CMS counts 190 Medicare patients who saw Dr. Lefrak in 2024. The largest group is 75 to 84, with 69 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.94, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lefrak's median patient age at 59, with 52% women.
Dr. Lefrak's Medicare patients by age, 2024
Dr. Lefrak's Medicare patients by sex, 2024
- Women12264%
- Men6836%
Chronic conditions among Dr. Lefrak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes46%
- Mood disorders43%
- Anxiety42%
- Depression38%
- COPD35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lefrak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen J. Lefrak wrote 125 Medicare Part D claims in 2024
In 2024, Dr. Lefrak wrote 125 Medicare Part D claims for 88 patients. 92% of them were for generic drugs. CMS names the drug for 26 of them, across 2 drugs with 11 or more claims each, at $99 in total drug cost. In 2023, CMS named 45 claims across 3 drugs.
Dr. Lefrak's Part D claims by kind of drug, 2024
- Generic115 claims92%
- Brand-name and other10 claims8%
Dr. Lefrak's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lefrak's Part D claims, 2024
- Opioids13%16 of 125 claims
- Antibiotics29%36 of 125 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 452024: 2642%
Drugs named by CMS: 2 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Karen J. Lefrak takes part in Medicare
Dr. Lefrak 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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Dr. Karen J. Lefrak received $11 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Lefrak from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Arbor Pharmaceuticals, Inc. paid the most, $11.
Companies that paid Dr. Lefrak the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen J. Lefrak graduated from Jefferson Medical College of Thomas Jefferson University
Dr. Lefrak graduated from Jefferson Medical College of Thomas Jefferson University in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen J. Lefrak'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Karen J. Lefrak
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. Karen J. Lefrak's NPI number?
Dr. Karen J. Lefrak's NPI number is 1972582989. It was assigned on January 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen J. Lefrak?
Dr. Karen J. Lefrak is an emergency medicine physician in Wilmington, Delaware. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Karen J. Lefrak practice?
Dr. Lefrak practices at 4000 Nexus Drive, Wilmington, DE 19803. Dr. Lefrak's primary practice is ChristianaCare HomeHealth - Wilmington in Wilmington, Delaware. Dmand AI also links Dr. Lefrak to 2 medical groups.
What is Dr. Karen J. Lefrak's office phone number?
The practice phone on file for Dr. Lefrak is (302) 327-5200.
What is Dr. Karen J. Lefrak's medical license number?
Dr. Lefrak holds Maryland license D0062643.
Which hospitals is Dr. Karen J. Lefrak affiliated with?
Dr. Lefrak is affiliated with ChristianaCare Union Hospital.
What medical group is Dr. Karen J. Lefrak part of?
Dr. Lefrak is linked to ChristianaCare Department of Emergency Medicine. Dmand AI links Dr. Lefrak to 2 more medical groups.
Does Dr. Karen J. Lefrak accept Medicare?
Yes. CMS data shows Dr. Lefrak billed Medicare for 291 services in 2024, and Dr. Lefrak accepts Medicare assignment.
How many Medicare patients does Dr. Karen J. Lefrak see?
CMS counts 190 Medicare patients who saw Dr. Lefrak in 2024, with an average age of 72.
What services does Dr. Karen J. Lefrak bill to Medicare?
In 2024, Dr. Lefrak's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Show 4 more questionsShow fewer questions
Where did Dr. Karen J. Lefrak go to medical school?
Dr. Lefrak graduated from Jefferson Medical College of Thomas Jefferson University in 2002.
What drugs does Dr. Karen J. Lefrak prescribe most?
In 2024 Medicare Part D data, Dr. Lefrak's most prescribed drugs by claims were Prednisone and Ondansetron ODT.
Has Dr. Karen J. Lefrak received payments from drug or device companies?
CMS Open Payments shows $11 in general payments to Dr. Lefrak from 1 company from 2017 to 2017. The largest total came from Arbor Pharmaceuticals, Inc.
How long has Dr. Karen J. Lefrak been practicing?
Dr. Lefrak graduated from medical school in 2002, 24 years ago.
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