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Gregory G Stiefel, D.O.

Family Medicine Physician in Mullica Hill, NJ · enumerated 2005 · practices at South Jersey Hospital, Inc..

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

National Provider Identifier

1649267881

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Registry record

Entity type Individual (Type 1)
Name Gregory G Stiefel
Credential D.O.
Sex Male
Practice address 201 Tomlin Station Rd, Ste B, Mullica Hill, NJ, 08062
Phone (856) 241-2522
Fax (856) 241-2511
Enumeration date Oct 3, 2005
Last updated in NPPES Apr 3, 2013

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MB06817700 (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
0859753000 Other - AMERIHEALTH
7527221 Other - AETNA PIN
2544170 Other - AETNA/HMO
080179129 Other - RR MEDICARE
8247501 Medicaid NJ -
223772973 Other NJ TAX ID

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.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Gregory Stiefel?
Gregory Stiefel is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-03.