NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Internal Medicine Specialty Services LLC

Internal Medicine Physician in Flagstaff, AZ · enumerated 2020 · authorized official M Cristina De Souza, Owner.

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

National Provider Identifier

1417568775

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Internal Medicine Specialty Services LLC
Practice address 1851 N Gemini Dr, Flagstaff, AZ, 86001
Phone (928) 266-0118
Enumeration date Aug 11, 2020
Last updated in NPPES Aug 11, 2020

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name M Cristina De Souza
Title Owner
Phone (928) 266-0118

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

What type of organization is Internal Medicine Specialty Services LLC?
Internal Medicine Specialty Services LLC is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-11.