Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Timothy L. Kerwin, MD

Radiation Oncology Physician in Naples, FL · enumerated 2006 · practices at Inspire Oncology LLC.

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

National Provider Identifier

1346309085

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Registry record

Entity type Individual (Type 1)

Name Dr. Timothy L. Kerwin

Credential MD

Sex Male

Practice address 15465 Tamiami Trl N, Naples, FL, 34110

Phone (239) 429-0200

Fax (239) 421-8209

Enumeration date Dec 8, 2006

Last updated in NPPES Apr 22, 2022

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License A91189 (CA) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License ME101714 (FL) 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
8467004	Other	FL	CIGNA
P01210193	Other	FL	RAILROAD MCR
1003459	Other	FL	WELLCARE
319019	Other	FL	AVMED
9863140	Other	FL	AETNA
000710000	Medicaid	FL	—
10T819	Other	FL	HEALTHY KIDS
P106298	Other	FL	FREEDOM HEALTH

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 1346309085 active?

Yes — as of the latest NPPES snapshot, NPI 1346309085 is active (record last updated 2022-04-22).

How do I verify Timothy Kerwin's NPI record?

Cross-check NPI 1346309085 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Ariel Pollock Radiation Oncology Physician · Naples, FL NPI 1356848493 Inspire Oncology LLC Radiation Oncology Physician · Naples, FL NPI 1952072852 Greer Burcky Registered Dietitian · Naples, FL NPI 1063165652 Cara Santos Physician Assistant · Naples, FL NPI 1093686818

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-22.