Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Franklin Del Rosario Montellano, M.D.

Anatomic Pathology & Clinical Pathology Physician in Geneva, IL · enumerated 2006.

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

National Provider Identifier

1669554663

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Registry record

Entity type Individual (Type 1)

Name Franklin Del Rosario Montellano

Credential M.D.

Sex Male

Practice address 300 Randall Rd, Pathology Dept, Geneva, IL, 60134

Phone (630) 232-8322

Enumeration date Oct 19, 2006

Last updated in NPPES Mar 15, 2024

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 036089636 (IL) Primary

207ZP0101X Anatomic Pathology Physician Allopathic & Osteopathic Physicians · License U8487 (TX) Secondary

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
036089636 3	Medicaid	IL	-
220033618	Other	IL	RAILROAD MEDICARE

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

Where does Franklin Montellano practice?

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

What is the NPI number for Franklin Montellano?

The National Provider Identifier (NPI) for Franklin Montellano is 1669554663, a Type 1 (individual) record in the CMS NPPES registry.

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Delnor Community Hospital General Acute Care Hospital · Geneva, IL NPI 1407859655 Udaya Bontu Hospitalist Physician · Geneva, IL NPI 1255339503 Mark Staudacher Anesthesiology Physician · Geneva, IL NPI 1710988126 Donald Adeli Obstetrics & Gynecology Physician · Geneva, IL NPI 1114928397 Arthur Proust Emergency Medicine Physician · Geneva, IL NPI 1720071152 Vincent Johnson Hospitalist Physician · Geneva, IL NPI 1497749931 Jennifer Siegel Genetic Counselor (M.S.) · Geneva, IL NPI 1174511083 Lawrence Bartusek Anatomic Pathology & Clinical Pathology Physician · Geneva, IL NPI 1790766947

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-15.