Dr. Robert Thomas Troiani Jr., M.D

Dr. Robert Thomas Troiani Jr. is a Surgery Physician provider (Surgery) practicing in Hannibal, MO, registered in the NPPES registry with NPI 1891736591 since 2006. The credential MD stands for Doctor of Medicine.

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NPI	1891736591
Entity type	Individual (Type 1)
Name	Dr. Robert Thomas Troiani Jr.
Credential	M.D
Sex	Male
Practice address	6500 HOSPITAL DR STE 2A, Hannibal, MO, 63401
Phone	5736293400
Fax	5736293414
Enumeration date	2006-06-10
Last updated in NPPES	2025-02-20

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
208600000X	Surgery Physician	Secondary	036172631	IL
208600000X	Surgery Physician	Primary	2007036885	MO

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
1891736591	Medicaid	MO	—
01659058	Medicaid	NY	—

Copy-ready billing details

Provider: Robert Troiani, M.D
NPI: 1891736591
Taxonomy: 208600000X (Surgery Physician)
Address: 6500 HOSPITAL DR STE 2A, Hannibal, MO, 63401

Verify this record

Cross-check NPI 1891736591 against the authoritative CMS record: view Dr. Robert Thomas Troiani Jr. on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where does Robert Troiani practice?

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

What is the NPI number for Robert Troiani?

The National Provider Identifier (NPI) for Robert Troiani is 1891736591, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-02-20.