NPI Portal NPI Lookup & Verification

Robert M Dryden MD Ltd

Robert M Dryden MD Ltd is a healthcare organization registered as Specialist in Tucson, AZ, holding Type 2 (organization) NPI 1154500643 since 2007. The authorized official on file is Christine Diorio, Patient Account Administrator.

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NPI 1154500643
Entity type Organization (Type 2)
Legal business name Robert M Dryden MD Ltd
Practice address 1241 N WILMOT RD, Tucson, AZ, 85712
Phone 5207220909
Fax 5207226937
Enumeration date 2007-10-31
Last updated in NPPES 2007-10-31

Authorized official

Name Christine Diorio
Title Patient Account Administrator
Phone 5207220909

Taxonomy & classification

Taxonomy code Specialty Primary License State
174400000X Specialist Primary 06151 AZ
Copy-ready billing details
Provider: Robert M Dryden MD Ltd
NPI: 1154500643
Taxonomy: 174400000X (Specialist)
Address: 1241 N WILMOT RD, Tucson, AZ, 85712

Providers at this address

NPI Name Type Specialty Location
1376657049 Robert Dryden Individual Plastic Surgery Physician Tucson, AZ
1942499942 Robert M Dryden MD Ltd Organization Specialist Tucson, AZ
1023552247 Netra Eye Clinic Pllc Organization Ophthalmology Physician Tucson, AZ

Verify this record

Cross-check NPI 1154500643 against the authoritative CMS record: view Robert M Dryden MD Ltd 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

What type of organization is Robert M Dryden MD Ltd?
Robert M Dryden MD Ltd is registered in NPPES as a Specialist (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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-10-31.