Maryellen Kopp, APN
Nurse Practitioner · Wilmington, DE
Maryellen Kopp, APN is a nurse practitioner with a practice address in Wilmington, Delaware, and NPI 1255451092, issued on Mar 29, 2007. Check the license (Delaware LB0000150, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maryellen Kopp
- Credential
- APN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- LB0000150 DE
Self-reported in NPPES; status is on the state search - Practice location
- 701 N Clayton St, Wilmington, DE 19805
- Phone
- (302) 421-4800
- Enumerated
- Mar 29, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (302) 421-4189
- Medicare enrollment
- Enrolled (PECOS I20131216000055); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 545 in Delaware → Look up another NPI →
Also registered at 701 N Clayton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maryellen Kopp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license LB0000150Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average nurse practitioner in 2024
176 Medicare Part D claims for 31 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel37 claims
- Atorvastatin Calcium32 claims
- Metoprolol Succinate22 claims
- Amiodarone Hcl12 claims
- Omeprazole12 claims
- Potassium Chloride11 claims
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.
Bills Medicare through one group practice
- Christiana Care Health Services IncNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maryellen Kopp among 545 nurse practitioner records in Delaware
Maryellen Kopp, APN is one of 545 nurse practitioner records with a practice address in Delaware. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 74% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1986 · median 2017 among the 291 with a school on file
- Record last updated2007 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
196 nurse practitioner records list a practice address in Wilmington
They are 196 of the 6,291 NPPES records with a practice address in Wilmington, and 545 nurse practitioner records in Delaware.
All 545 in Delaware → Every provider in Wilmington → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Hannah Abinteh, NPWilmington, DE 198051568070449
- Vilma Davis, APNWilmington, DE 198051982795225
- James Horstmyer, CRNPWilmington, DE 198051972554087
- Michelle Langrehr, NPWilmington, DE 198051427085950
- Sa Lu, NPWilmington, DE 198051770747651
- Mary Mackenzie, CRNPWilmington, DE 198051881810356
- Veronica Mahaffy, CRNAWilmington, DE 198051164516795
- Gloria SchwagelWilmington, DE 198051164015905
Common questions
What is Maryellen Kopp, APN's NPI number?
Maryellen Kopp, APN's National Provider Identifier (NPI) is 1255451092, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maryellen Kopp, APN located?
The NPPES record lists a practice address at 701 N Clayton St, Wilmington, DE, 19805. Phone: (302) 421-4800. Providers update this record themselves, so call before visiting.
How can I verify Maryellen Kopp, APN's license?
NPPES lists Delaware license number LB0000150, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Maryellen Kopp, APN prescribe under Medicare Part D?
In 2024, Maryellen Kopp, APN had 176 Medicare Part D claims for 31 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.