Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mary R Bello, M.D.

Adult Medicine Physician in Mahwah, NJ · enumerated 2006.

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

National Provider Identifier

1376637413

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary R Bello

Credential M.D.

Sex Female

Practice address Mahwah, NJ, 07430

Phone (201) 327-3333

Fax (210) 327-2575

Enumeration date Oct 3, 2006

Last updated in NPPES Sep 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MA49418 (NJ) Secondary

207QA0505X Adult Medicine Physician Allopathic & Osteopathic Physicians · License MA49418 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1043763	Other	NJ	AETNA U.S. HEALTHCARE
1920804	Medicaid	NJ	-
2K2032	Other	NJ	HEALTHNET

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 Mary Bello?

Mary Bello is registered in NPPES with the primary taxonomy of Adult 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 2025-09-11.