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

A Louis Ojascastro, M.D.

Obstetrics & Gynecology Physician in Saint Louis, MO · enumerated 2006 · practices at A Louis Ojascastro LLC.

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

National Provider Identifier

1669580221

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Registry record

Entity type Individual (Type 1)
Name A Louis Ojascastro
Credential M.D.
Sex Male
Practice address Saint Louis, MO, 63129
Phone (314) 846-9090
Fax (314) 846-2968
Enumeration date Aug 25, 2006
Last updated in NPPES Aug 30, 2018

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

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License R3J90 (MO) 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
202678306 Medicaid MO -

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 A Ojascastro?
A Ojascastro is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology 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 2018-08-30.