NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Anthony Gregg, D.O.

Family Medicine Physician in Wayne, NJ · enumerated 2007.

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

National Provider Identifier

1013118660

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. John Anthony Gregg
Credential D.O.
Sex Male
Practice address 510 Hamburg Tpke, Wayne Commons, Suite 101, Wayne, NJ, 07470
Phone (973) 942-6005
Fax (973) 942-6009
Enumeration date May 30, 2007
Last updated in NPPES May 27, 2008

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25MB08249300 (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

Other identifiers

Identifier Type State Issuer
0152757 Medicaid NJ -
P3834330 Other NJ OXFORD#
3K7491 Other NJ HEALTHNET#
0175993 Other NJ GHI PPO#
164231 Other NJ AETNA HMO#
2870423000 Other NJ AMERIHEALTH#
7305262 Other NJ AETNA PPO#
6048P1 Other NJ EMPIRE BCBS#

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

What is the NPI number for John Gregg?
The National Provider Identifier (NPI) for John Gregg is 1013118660, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Gregg practice?
The practice location on file with NPPES is in Wayne, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-27.