NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Phillip W. Stone, MD, LLC

Geriatric Medicine (Internal Medicine) Physician in Woodbine, MD · enumerated 2015 · authorized official Phillip Stone, Sole Member.

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

National Provider Identifier

1912371832

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Phillip W. Stone, MD, LLC
Practice address 16013 Fields End Ct, Woodbine, MD, 21797
Phone (410) 442-6864
Fax (410) 970-6304
Enumeration date Nov 16, 2015
Last updated in NPPES Jan 26, 2016

Taxonomy & classification

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License D47009 (MD) Primary

Authorized official

Name Phillip Stone
Title Sole Member
Phone (410) 442-6864

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 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.
What type of organization is Phillip W. Stone, MD, LLC?
Phillip W. Stone, MD, LLC is registered in NPPES as a Geriatric Medicine (Internal Medicine) Physician (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-26.