Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Konstantinos N Tzaferos Jr., PHARMD

Pharmacist in Stratford, NJ · enumerated 2007 · practices at Gus Pharmacy, LLC.

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

National Provider Identifier

1841342607

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Registry record

Entity type Individual (Type 1)

Name Dr. Konstantinos N Tzaferos Jr.

Credential PHARMD

Sex Male

Practice address 42 E Laurel Rd Ste 1900, Stratford, NJ, 08084

Phone (856) 346-3535

Fax (856) 346-4953

Enumeration date Jan 18, 2007

Last updated in NPPES Jan 21, 2021

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RP439247 (PA) Secondary

183500000X Pharmacist Pharmacy Service Providers · License 28RI03134700 (NJ) Primary

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 1841342607 active?

Yes, as of the latest NPPES snapshot, NPI 1841342607 is active (record last updated 2021-01-21).

How do I verify Konstantinos Tzaferos's NPI record?

Cross-check NPI 1841342607 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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Gus Pharmacy, LLC Long Term Care Pharmacy · Stratford, NJ NPI 1891546834 Rhonda Angelo Pharmacist · Stratford, NJ NPI 1750108296

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-21.