Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maureen D Passaro, M.D.

Endocrinology, Diabetes & Metabolism Physician in Olney, MD · enumerated 2005.

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

National Provider Identifier

1316940141

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Registry record

Entity type Individual (Type 1)

Name Maureen D Passaro

Credential M.D.

Sex Female

Practice address 18109 Prince Philip Dr Ste B, Olney, MD, 20832

Phone (301) 774-4529

Fax (301) 774-5652

Enumeration date May 24, 2005

Last updated in NPPES Jan 30, 2024

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License D0044487 (MD) Primary

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

The practice location on file with NPPES is in Olney, MD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Maureen Passaro?

The National Provider Identifier (NPI) for Maureen Passaro is 1316940141, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-30.