NPPES file of Aug 9, 2026

Louis William Arena, PA-C

Medical Physician Assistant · Wilmington, DE

Louis William Arena, PA-C is a medical physician assistant with a practice address in Wilmington, Delaware, and NPI 1386731024, issued on Oct 6, 2006. Check the license (Delaware C50000540, 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
1386731024
Name
Louis William Arena
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
C50000540 DE
Self-reported in NPPES; status is on the state search
Practice location
601 Weldin RD, Wilmington, DE 19803
Phone
(302) 494-1968
Enumerated
Oct 6, 2006
Record last updated
Apr 8, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20070213000112); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Louis William Arena 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 C50000540
    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
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60% fewer Medicare Part D claims than the average medical physician assistant in 2024

455 Medicare Part D claims for 74 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Louis Arena455
  2. Specialty average1,148

Most prescribed

  1. Buprenorphine-Naloxone363 claims
  2. Suboxone26 claims
  3. Zubsolv19 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: $18.86

1 payment: food and beverage; the largest payer was Indivior Inc. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Louis Arena$18.86
  2. Specialty average$1,055.00

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

Bills Medicare through one group practice

  1. Responsive Health LLCNew Castle, DE

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Louis William Arena among 111 medical physician assistant records in Delaware

Louis William Arena, PA-C is one of 111 medical physician assistant records with a practice address in Delaware. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 85% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2005 · median 2015 among the 59 with a school on file
  • Record last updated2019 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in Delaware

There are 111 medical physician assistant records in Delaware.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Sherrie Brady, PA-CWilmington, DE 198031043301336
  2. Edith Burkey, PA-CWilmington, DE 198031689765950
  3. Diana Cloud, PA-CWilmington, DE 198031760760888
  4. Olivia CraigWilmington, DE 198031477338648
  5. Sarah Flynn, PA-CWilmington, DE 198031538477047
  6. Jessica Schmidt, PA-CWilmington, DE 198031568279727
  7. Margaret Love, PA-CWilmington, DE 198051013968411
  8. Alison Miller, PA-CWilmington, DE 198011417970344

Common questions

What is Louis William Arena, PA-C's NPI number?

Louis William Arena, PA-C's National Provider Identifier (NPI) is 1386731024, issued on Oct 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Louis William Arena, PA-C located?

The NPPES record lists a practice address at 601 Weldin RD, Wilmington, DE, 19803. Phone: (302) 494-1968. Providers update this record themselves, so call before visiting.

How can I verify Louis William Arena, PA-C's license?

NPPES lists Delaware license number C50000540, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.

How much does Louis William Arena, PA-C prescribe under Medicare Part D?

In 2024, Louis William Arena, PA-C had 455 Medicare Part D claims for 74 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.