NPPES file of Aug 9, 2026

Nicholas J. Mandalakas, M.D.

Clinical Cardiac Electrophysiology Physician · Dover, DE

Nicholas J. Mandalakas, M.D. is a clinical cardiac electrophysiology physician with a practice address in Dover, Delaware, and NPI 1811988868, issued on Oct 31, 2005. Check the license (Delaware C1-0024586, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; 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
1811988868
Name
Nicholas J. Mandalakas
Credential
M.D.
Primary taxonomy
Clinical Cardiac Electrophysiology Physician 207RC0001X
License numbers
C1-0024586 DE
MD037192E PA
Self-reported in NPPES; status is on the state search
Practice location
1113 S State St Ste 100, Dover, DE 19901
Phone
(302) 734-7676
Enumerated
Oct 31, 2005
Record last updated
Mar 3, 2022
Fax
(302) 734-7615
Medicare enrollment
Enrolled (PECOS I20220119002221); accepts Medicare assignment
Medical or professional school
Jefferson Medical College Of Thomas Jefferson University, 1985
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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Also registered at 1113 S State St Ste 100

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

  1. Tara Kay, PA-CPhysician Assistant1841716909
  2. Romy Patel, PA-CPhysician Assistant1396618047

Verify Nicholas J. Mandalakas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
    Search for license C1-0024586
    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
Open the Delaware license search

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About as many Medicare Part D claims as the average clinical cardiac electrophysiology physician in 2024

1,709 Medicare Part D claims for 251 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Nicholas Mandalakas1,709
  2. Specialty average1,710

Most prescribed

  1. Eliquis153 claims
  2. Metoprolol Succinate151 claims
  3. Rosuvastatin Calcium121 claims
  4. Losartan Potassium104 claims
  5. Amlodipine Besylate98 claims
  6. Atorvastatin Calcium95 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: $3,450.02

45 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 3,167 providers of this specialty with any payment received $10,651.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nicholas Mandalakas$3,450
  2. Specialty average$10,651

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

Bills Medicare through 2 group practices

  1. Bayhealth Medical Center, IncMilford, DE
  2. Cardiology Physicians, LLCDover, DE

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

Clinical Cardiac Electrophysiology Physician providers in Delaware

There are 6 clinical cardiac electrophysiology physician records in Delaware.

Other clinical cardiac electrophysiology physician records in Delaware

  1. Stephen Blumberg, M.D.Dover, DE1396709440
  2. Maria Pia Del Corral, MDLewes, DE1932745916
  3. Raymond Miller, M.D.Dover, DE1205802188
  4. Joseph Pennington, M.D.Wilmington, DE1932102647
  5. Wenchi Tsai, MDNewark, DE1558578740

Common questions

What is Nicholas J. Mandalakas, M.D.'s NPI number?

Nicholas J. Mandalakas, M.D.'s National Provider Identifier (NPI) is 1811988868, issued on Oct 31, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Nicholas J. Mandalakas, M.D. located?

The NPPES record lists a practice address at 1113 S State St Ste 100, Dover, DE, 19901. Phone: (302) 734-7676. Providers update this record themselves, so call before visiting.

How can I verify Nicholas J. Mandalakas, M.D.'s license?

NPPES lists Delaware license number C1-0024586, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Nicholas J. Mandalakas, M.D. prescribe under Medicare Part D?

In 2024, Nicholas J. Mandalakas, M.D. had 1,709 Medicare Part D claims for 251 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. 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.