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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark De Silva, M.D.

Emergency Medicine Physician in Hazel Crest, IL · enumerated 2006.

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

National Provider Identifier

1609945922

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark De Silva
Credential M.D.
Sex Male
Practice address 17800 Kedzie Ave, Hazel Crest, IL, 60429
Phone (708) 213-4200
Enumeration date Nov 8, 2006
Last updated in NPPES Sep 16, 2022

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036077940 (IL) 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
01623845 Other IL BLUE CROSS & BLUE SHIELD
036077940 Medicaid IL -

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

How do I verify Mark De Silva's NPI record?
Cross-check NPI 1609945922 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1609945922 active?
Yes, as of the latest NPPES snapshot, NPI 1609945922 is active (record last updated 2022-09-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-16.