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

Mr. John Stephen Silvani, RN CARN CAS LCDCII

Addiction (Substance Use Disorder) Registered Nurse in Middletown, OH · enumerated 2016.

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

National Provider Identifier

1841649415

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Registry record

Entity type Individual (Type 1)

Name Mr. John Stephen Silvani

Credential RN CARN CAS LCDCII

Sex Male

Practice address Middletown, OH, 45044

Phone (513) 479-3952

Enumeration date Jun 6, 2016

Last updated in NPPES Mar 26, 2026

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

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License RN222372 (OH) Primary

163WA2000X Administrator Registered Nurse Nursing Service Providers · License RN222372 (OH) Secondary

101Y00000X Counselor Behavioral Health & Social Service Providers · License LICDCII.161554 (OH) Secondary

Other identifiers

Identifier	Type	State	Issuer
0184037	Medicaid	OH	-

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

Is NPI 1841649415 active?

Yes, as of the latest NPPES snapshot, NPI 1841649415 is active (record last updated 2026-03-26).

How do I verify John Silvani's NPI record?

Cross-check NPI 1841649415 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-26.