NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ronald T. Kobayashi & Associates, PC

Surgery Physician in Tamuning, GU · enumerated 2009 · authorized official Ronald Kobayashi, First Director.

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

National Provider Identifier

1407098999

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Ronald T. Kobayashi & Associates, PC
Practice address 590 South Marine Corps Drive, Ste. 211, Tamuning, GU, 96913
Phone (671) 649-7588
Fax (671) 646-1088
Enumeration date Mar 30, 2009
Last updated in NPPES Jul 5, 2022

Taxonomy & classification

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License M-1025 (GU) Primary
2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Ronald Kobayashi
Title First Director
Phone (671) 649-7588

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

Who is the authorized official for Ronald T. Kobayashi & Associates, PC?
NPPES lists Ronald Kobayashi (First Director) as the authorized official for this organization.
What is the NPI number for Ronald T. Kobayashi & Associates, PC?
The NPI for Ronald T. Kobayashi & Associates, PC is 1407098999, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-05.