Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rebecca Ryan Marcinak, PHARMD

Pharmacist in Lewes, DE · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1164921961

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Registry record

Entity type Individual (Type 1)

Name Rebecca Ryan Marcinak

Credential PHARMD

Sex Female

Practice address 424 Savannah Rd, Lewes, DE, 19958

Phone (302) 260-7558

Fax (302) 260-7559

Enumeration date Feb 7, 2018

Last updated in NPPES Jul 7, 2026

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License A1-0005413 (DE) Primary

183500000X Pharmacist Pharmacy Service Providers · License 063436 (NY) Secondary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1164921961 active?

Yes, as of the latest NPPES snapshot, NPI 1164921961 is active (record last updated 2026-07-07).

How do I verify Rebecca Marcinak's NPI record?

Cross-check NPI 1164921961 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Imtiaz Khokhar Internal Medicine Physician · Lewes, DE NPI 1629075387 Anthony Buonanno Internal Medicine Physician · Lewes, DE NPI 1609873413 Yongling Bian Clinical Pathology/Laboratory Medicine Physician · Lewes, DE NPI 1912907510 Maureen Syntax Certified Registered Nurse Anesthetist · Lewes, DE NPI 1093708562 Norman Boyer Diagnostic Radiology Physician · Lewes, DE NPI 1649267717 Jeffrey Mccann Diagnostic Radiology Physician · Lewes, DE NPI 1033106109 Ellen Albert Diagnostic Radiology Physician · Lewes, DE NPI 1790772879 Andrew Dahlke Diagnostic Radiology Physician · Lewes, DE NPI 1912994096

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-07.