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

Oscar S. Lopez, MD

Q: What is the NPI number for Oscar Lopez?

The National Provider Identifier (NPI) for Oscar Lopez is 1558315879, a Type 1 (individual) record in the CMS NPPES registry.

Psychiatry Physician in Williamsville, NY · enumerated 2006.

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

National Provider Identifier

1558315879

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Oscar S. Lopez

Credential MD

Sex Male

Practice address Williamsville, NY, 14221

Phone (716) 632-5450

Enumeration date May 20, 2006

Last updated in NPPES Aug 9, 2013

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

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 098285 (NY) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MD 098285 (NY) 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
00594876	Medicaid	NY	-

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 Oscar Lopez practice?

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

What is the NPI number for Oscar Lopez?

The National Provider Identifier (NPI) for Oscar Lopez is 1558315879, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Ear,Nose&Throat Care of Wny PC Otolaryngology Physician · Williamsville, NY NPI 1154430387 Erie,Niagara Tonawanda Medical Associates PC Otolaryngology Physician · Williamsville, NY NPI 1275692428 Aziza Karimi Child & Adolescent Psychiatry Physician · Williamsville, NY NPI 1851450662 Accura Audiology, Pllc Audiologist · Williamsville, NY NPI 1942335476 Jenny Sy-Munoz Prosthodontics · Williamsville, NY NPI 1902016017 Tammy Owens Psychiatric/Mental Health Nurse Practitioner · Buffalo, NY NPI 1306098249 Anna Shurmatz Clinical Social Worker · Williamsville, NY NPI 1619286572 Aaron Rosenbaum Mental Health Counselor · Williamsville, NY NPI 1720422710

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-09.