NPPES file of Aug 9, 2026

Joan E. Steinhardt, PAC

Physician Assistant · Wilmington, DE

Joan E. Steinhardt, PAC is a physician assistant with a practice address in Wilmington, Delaware, and NPI 1558341461, issued on Jan 18, 2006. Check the license (Delaware C50000155, 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
1558341461
Name
Joan E. Steinhardt
Credential
PAC
Primary taxonomy
Physician Assistant 363A00000X
License number
C50000155 DE
Self-reported in NPPES; status is on the state search
Practice location
3105 Limestone RD, Wilmington, DE 19808
Phone
(302) 633-1700
Enumerated
Jan 18, 2006
Record last updated
Mar 7, 2023
Fax
(302) 998-3226
Medicaid ID
000554843 DE
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 3105 Limestone RD

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

  1. Mart Amick, MDInternal Medicine Physician1942209143
  2. Don Blackburn, ODVision Therapy Optometrist1639271216
  3. Sherri Campbell, PAMedical Physician Assistant1740476605
  4. Richard Chodroff, D.M.D.Periodontics1972527760
  5. Timothy Ciolkosz, DCChiropractor1013987221
  6. Talitha D'Italia, O.D.Optometrist1063477990

Verify Joan E. Steinhardt 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 C50000155
    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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Industry payments in 2024: $276.38

13 payments; by number, the most common kind was food and beverage; the largest payer was Harmony Biosciences LLC. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Joan Steinhardt$276.38
  2. Specialty average$841.65

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

Joan E. Steinhardt among 695 physician assistant records in Delaware

Joan E. Steinhardt, PAC is one of 695 physician assistant records with a practice address in Delaware. 79% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 85% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2023 · 34% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

138 physician assistant records list a practice address in Wilmington

They are 138 of the 6,291 NPPES records with a practice address in Wilmington, and 695 physician assistant records in Delaware.

The 8 physician assistant records with the nearest ZIP codes

  1. Robert Biddle, PAWilmington, DE 198081467462051
  2. Joseph Cassidy, PAWilmington, DE 198081558371146
  3. Crystal Dimauro, PAWilmington, DE 198081750832812
  4. George Duffield, PA-CWilmington, DE 198081689101917
  5. Catherine Frescoln, PAWilmington, DE 198081629280375
  6. Daniel Maistre, PA-CWilmington, DE 198081770949026
  7. Thomas Merring, P.A.Wilmington, DE 198081447507421
  8. Chioma Njoku, PHYSICIAN ASSISTANTWilmington, DE 198081831483783

Common questions

What is Joan E. Steinhardt, PAC's NPI number?

Joan E. Steinhardt, PAC's National Provider Identifier (NPI) is 1558341461, issued on Jan 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joan E. Steinhardt, PAC located?

The NPPES record lists a practice address at 3105 Limestone RD, Wilmington, DE, 19808. Phone: (302) 633-1700. Providers update this record themselves, so call before visiting.

How can I verify Joan E. Steinhardt, PAC's license?

NPPES lists Delaware license number C50000155, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity 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.