NPPES file of Aug 9, 2026

Casey Elizabeth Mayer, FNP-BC

Family Nurse Practitioner · Lewes, DE

Casey Elizabeth Mayer, FNP-BC is a family nurse practitioner with a practice address in Lewes, Delaware, and NPI 1023461308, issued on Jul 21, 2016. Check the license (Delaware LG-0012870, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023461308
Name
Casey Elizabeth Mayer
Credential
FNP-BC
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
LG-0012870 DE
2299265 MA
710873 NY
F340932-1 NY
Self-reported in NPPES; status is on the state search
Practice location
16337 Coastal Hwy, Lewes, DE 19958
Phone
(302) 291-9900
Enumerated
Jul 21, 2016
Record last updated
Oct 15, 2024
Fax
(302) 200-9094
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 16337 Coastal Hwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aaron Block, P.A.-CPhysician Assistant1700922390
  2. Ashley Hill, FNP-BCFamily Nurse Practitioner1477819936
  3. Matthew Rydlewski, PA-CPhysician Assistant1851915649
  4. Jennifer Wright, APRNFamily Nurse Practitioner1568943942

Verify Casey Elizabeth Mayer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Delaware board licenses this profession
    Search for license LG-0012870
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Delaware license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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86% fewer Medicare Part D claims than the average family nurse practitioner in 2024

185 Medicare Part D claims for 86 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Casey Mayer185
  2. Specialty average1,305

Most prescribed

  1. Ketoconazole43 claims
  2. Triamcinolone Acetonide21 claims
  3. Ammonium Lactate16 claims
  4. Mupirocin15 claims
  5. Fluorouracil14 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.

Industry payments in 2024: $161.14

7 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Casey Mayer$161.14
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Casey Elizabeth Mayer among 709 family nurse practitioner records in Delaware

Casey Elizabeth Mayer, FNP-BC is one of 709 family nurse practitioner records with a practice address in Delaware. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 42% of them.

  • NPI issued2016 · 42% of these records are older, 53% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 61% of these records are
  • Record last updated2024 · 43% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

35 family nurse practitioner records list a practice address in Lewes

They are 35 of the 1,696 NPPES records with a practice address in Lewes, and 709 family nurse practitioner records in Delaware.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Jeanette Boyer, NURSE PRACTITIONERLewes, DE 199581710082318
  2. Johannah Butler, FNP-BCLewes, DE 199581780014993
  3. Caryn Chasanov, FNP-BCLewes, DE 199581992021687
  4. Kathleen Dressel, FNP-BCLewes, DE 199581609210467
  5. Ashley Hill, FNP-BCLewes, DE 199581477819936
  6. Alice Hopple, MSN, FNP-BCLewes, DE 199581245252535
  7. Joann Kirker Economos, MSN, RN, FNP-BCLewes, DE 199581225251333
  8. Nicole Lee, CRNPLewes, DE 199581730302233

Common questions

What is Casey Elizabeth Mayer, FNP-BC's NPI number?

Casey Elizabeth Mayer, FNP-BC's National Provider Identifier (NPI) is 1023461308, issued on Jul 21, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Casey Elizabeth Mayer, FNP-BC located?

The NPPES record lists a practice address at 16337 Coastal Hwy, Lewes, DE, 19958. Phone: (302) 291-9900. Providers update this record themselves, so call before visiting.

How can I verify Casey Elizabeth Mayer, FNP-BC's license?

NPPES lists Delaware license number LG-0012870, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.

How much does Casey Elizabeth Mayer, FNP-BC prescribe under Medicare Part D?

In 2024, Casey Elizabeth Mayer, FNP-BC had 185 Medicare Part D claims for 86 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.