Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Douglas W. Marx. M.D., P.A.

Q: What type of organization is Douglas W. Marx. M.D., P.A.?

Douglas W. Marx. M.D., P.A. is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

Ophthalmology Physician in Mountain Home, AR · enumerated 2005 · authorized official Douglas Marx, President.

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

National Provider Identifier

1881680247

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Registry record

Entity type Organization (Type 2)

Legal business name Douglas W. Marx. M.D., P.A.

Other name <Unavail>

Practice address 140 Highway 201 N, Mountain Home, AR, 72653

Phone (870) 424-2020

Fax (870) 425-4840

Enumeration date Sep 21, 2005

Last updated in NPPES Jul 27, 2010

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Douglas Marx

Title President

Phone (870) 424-2020

Other identifiers

Identifier	Type	State	Issuer
121891722	Medicaid	AR	-
118175002	Medicaid	AR	-
CH6105	Other	-	PALMETTO GBA - RAILROAD MEDICARE

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.

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Frequently asked questions

What type of organization is Douglas W. Marx. M.D., P.A.?

Douglas W. Marx. M.D., P.A. is registered in NPPES as a Ophthalmology 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-27.