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

Dr. Aaron Onyango Obare Silverstein, MD

Internal Medicine Physician in Saint Louis, MO · enumerated 2021.

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

National Provider Identifier

1316523418

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Registry record

Entity type Individual (Type 1)

Name Dr. Aaron Onyango Obare Silverstein

Credential MD

Sex Male

Practice address Saint Louis, MO, 63127

Phone (314) 525-0490

Fax (314) 525-0434

Enumeration date Mar 20, 2021

Last updated in NPPES Sep 19, 2025

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2024017053 (MO) 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

How do I verify Aaron Silverstein's NPI record?

Cross-check NPI 1316523418 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1316523418 active?

Yes, as of the latest NPPES snapshot, NPI 1316523418 is active (record last updated 2025-09-19).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-19.