NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John K. Mariani, DO

Orthopaedic Surgery Physician in Sewell, NJ · enumerated 2006.

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

National Provider Identifier

1811006885

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. John K. Mariani
Credential DO
Sex Male
Practice address 570 Egg Harbor Rd, Suite C4, Sewell, NJ, 08080
Phone (609) 267-9400
Fax (609) 267-9457
Enumeration date Aug 30, 2006
Last updated in NPPES Mar 17, 2026

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 25MB04123100 (NJ) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

Where does John Mariani practice?
The practice location on file with NPPES is in Sewell, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Mariani?
The National Provider Identifier (NPI) for John Mariani is 1811006885, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-17.